HOLGER FRIEDRICH HOFMANN

Last Updated :2025/06/30

Affiliations, Positions
Graduate School of Advanced Science and Engineering, Professor
E-mail
hofmannhiroshima-u.ac.jp
Self-introduction
I am an expert on quantum phenomena and their peculiar effects in optical systems. Through my theoretical work, I have pioneered new methods of control for photons and fields. I strongly believe that a better understanding of quantum physics is possible and can be achieved by better methods of observation. At the heart of this effort is the problem of control and the limitations imposed on it by quantum uncertainty. At present, science is suffering from a superficial understanding of empirical standards and a lack of honest discussion regarding the wider implications of new insights. To me, science is an indispensable part of our shared human heritage and we need to work together to promote and maintain a free and open exchange of scientific ideas. I was able to move from Germany to Japan because science knows neither nationality nor boundaries. The same should apply to all other fields of academia and I believe that it is the central purpose of Universities to bring people from all backgrounds together in an honest effort to realize a life dedicated to truth and honesty. I sincerely hope that I can contribute to this effort and this is the core motivation of my work.

Basic Information

Academic Degrees

  • Doctor of Science, University of Stuttgart
  • Master, University of Stuttgart

Educational Activity

  • [Bachelor Degree Program] School of Engineering : Cluster 2(Electrical, Electronic and Systems Engineering) : Program of Electronic Devices and Systems
  • [Master's Program] Graduate School of Advanced Science and Engineering : Division of Advanced Science and Engineering : Quantum Matter Program
  • [Doctoral Program] Graduate School of Advanced Science and Engineering : Division of Advanced Science and Engineering : Quantum Matter Program

Research Fields

  • Mathematical and physical sciences;Physics;Atomic / Molecular / Quantum electronics

Research Keywords

  • Quantum Optics, Quantum Information, Foundations of Quantum Theory

Affiliated Academic Societies

  • German Physical Society, 1997
  • OPTICA (former Optical Society of America), 1997

Educational Activity

Course in Charge

  1. 2025, Liberal Arts Education Program1, 1Term, Principles of Physics
  2. 2025, Undergraduate Education, 3Term, Electromagnetism II
  3. 2025, Undergraduate Education, 3Term, Exercise of Electromagnetism II
  4. 2025, Undergraduate Education, Year, Graduation Thesis
  5. 2025, Graduate Education (Master's Program) , First Semester, Seminar on Electronics A
  6. 2025, Graduate Education (Master's Program) , Second Semester, Seminar on Electronics B
  7. 2025, Graduate Education (Master's Program) , Year, Academic Presentation in Electronics
  8. 2025, Graduate Education (Master's Program) , 1Term, Exercises in Electronics A
  9. 2025, Graduate Education (Master's Program) , 2Term, Exercises in Electronics A
  10. 2025, Graduate Education (Master's Program) , 3Term, Exercises in Electronics B
  11. 2025, Graduate Education (Master's Program) , 4Term, Exercises in Electronics B
  12. 2025, Graduate Education (Master's Program) , 1Term, Quantum Optics
  13. 2025, Graduate Education (Master's Program) , Year, Advanced Study in Quantum Matter
  14. 2025, Graduate Education (Doctoral Program) , Year, Advanced Study in Quantum Matter

Research Activities

Academic Papers

  1. Counterfactual control and quantum contextuality in multi-mode interferometers, Proc. SPIE, 13148, 1314809, 20241004
    Link to Paper Search Results by DOI
  2. Counterfactuality, back-action, and information gain in multi-path interferometers, QUANTUM SCIENCE AND TECHNOLOGY, 9(4), 20241001
    Link to Paper Search Results by DOI
  3. Tracing quantum correlations back to collective interferences, New Journal of Physics, 26, 063021-1-063021-11, 20240619
    Link to Paper Search Results by DOI
  4. Contextuality and inequality violations in a three-path interferometer, Proc. SPIE, 20231003
    Link to Paper Search Results by DOI
  5. Origin of meter fluctuations in weak measurement interactions, PHYS REV A, 109, 022224-1-022224-12, 20240220
    Link to Paper Search Results by DOI
  6. ★, Sequential propagation of a single photon through five measurement contexts in a three-path interferomete, Optica Quantum, 1, 63-70, 20231215
    Link to Paper Search Results by DOI
  7. Quantitative relations between different measurement contexts, QUANTUM, 8, 1255-1-1255-8, 20240208
    Link to Paper Search Results by DOI
  8. Realization of photon correlations beyond the linear optics limit, SCIENCE ADVANCES, 9(51), eadj8146-1-eadj8146-8, 20231222
    Link to Paper Search Results by DOI
  9. Quantum contextuality of complementary photon polarizations explored by adaptive input state control, PHYSICAL REVIEW A, 108(6), 062213-1-062213-11, 20231215
    Link to Paper Search Results by DOI
  10. ★, Contextuality, coherences, and quantum Cheshire cats, NEW JOURNAL OF PHYSICS, 25(11), 113028-1-113028-14, 20230612
    Link to Paper Search Results by DOI
  11. ★, A possible solution to the which-way problem of quantum interference, QUANTUM STUDIES-MATHEMATICS AND FOUNDATIONS, 10(4), 429-437, 202311
    Link to Paper Search Results by DOI
  12. ★, Dependence of measurement outcomes on the dynamics of quantum coherent interactions between the system and the meter, PHYSICAL REVIEW RESEARCH, 5(3), 033064-1-033064-12, 20230731
    Link to Paper Search Results by DOI
  13. Enhancement of broadband entangled two-photon absorption by resonant spectral phase flips, PHYSICAL REVIEW A, 108(1), 033064-1-033064-9, 20230714
    Link to Paper Search Results by DOI
  14. Characterization of the nonclassical relation between measurement outcomes represented by nonorthogonal quantum states, PHYSICAL REVIEW A, 107, 022208-1-022208-8, 20230209
    Link to Paper Search Results by DOI
  15. ★, Pfadbestimmung im Doppelspalt, Spektrum der Wissenschaft, 2022(11), 24-26, 20221101
  16. Probing the path information hidden in the quantum fluctuations of interference patterns, Proc. SPIE, 12238, 1223808, 20221004
    Link to Paper Search Results by DOI
  17. ★, Quantifying the presence of a neutron in the paths of an interferometer, PHYSICAL REVIEW RESEARCH, 4(2), 20220427
    Link to Paper Search Results by DOI
  18. Energy-time entanglement and intermediate-state dynamics in two-photon absorption, PHYSICAL REVIEW A, 104(2), 20210827
    Link to Paper Search Results by DOI
  19. Phase matching between energy-time entanglement and two photon absorption processes, Proc. SPIE, 11835, 118350P, 20210801
    Link to Paper Search Results by DOI
  20. Uncertainty limits of the information exchange between a quantum system and an external meter, Physical Review A, 104, 012219, 20210721
    Link to Paper Search Results by DOI
  21. How to put quantum particles on magic bullet trajectories that can hit two targets without a clear line-of-sight, Scientific Reports, 11, 7964, 20210412
    Link to Paper Search Results by DOI
  22. ★, Direct evaluation of measurement uncertainties by feedback compensation of decoherence, Physical Review Research, 3, L012011, 20210203
    Link to Paper Search Results by DOI
  23. Experimental investigation of the relation between measurement uncertainties and non-local quantum correlations, JOURNAL OF PHYSICS COMMUNICATIONS, 5(11), 202111
    Link to Paper Search Results by DOI
  24. Contextuality of quantum fluctuations characterized by conditional weak values of entangled states, Physical Review A, 102, 062215, 20201222
    Link to Paper Search Results by DOI
  25. Exploring energy-time entanglement using the dynamics of two-photon absorption, Proc. SPIE, 11507, 115070K, 202008
    Link to Paper Search Results by DOI
  26. Direct and efficient verification of entanglementbetween two multimode–multiphoton systems, Optica, 7, 1517-1523, 20201029
    Link to Paper Search Results by DOI
  27. Quantum causality relations and the emergence of reality from coherent superpositions, Foundations of Physics, 20200518
    Link to Paper Search Results by DOI
  28. What Does the Operator Algebra of Quantum Statistics Tell Us about the Objective Causes of Observable Effects?, ENTROPY, 22(6), 202006
    Link to Paper Search Results by DOI
  29. Time of flight paradox for photons in a dispersive medium, Proc. SPIE, 11134, 111340H, 201909
    Link to Paper Search Results by DOI
  30. ★, The role of system–meter entanglement in controlling the resolution and decoherence of quantum measurements, New Journal of Physics, 21, 103006-1-103006-11, 20191001
    Link to Paper Search Results by DOI
  31. Local measurement uncertainties impose a limit on nonlocal quantum correlations, Physical Review A, 100, 012123, 20190722
    Link to Paper Search Results by DOI
  32. Quantum enhancement of sensitivity achieved by photon-number-resolving detection in the dark port of a two-path interferometer operating at high intensities, Physical Review A, 100, 013814, 20190709
    Link to Paper Search Results by DOI
  33. Experimental evaluation of the nonclassical relation between measurement errors using entangled photon pairs as a probe, Physical Review A, 98, 062109, 20181207
  34. Experimental evaluation of the nonclassical relation between measurement errors using entangled photon pairs as a probe, PHYSICAL REVIEW A, 98(6), 20181207
    Link to Paper Search Results by DOI
  35. A statistical analysis of single photon propagation: how quantum interference modifies the laws of motion, Proc. SPIE, 10771, 1077115, 201809
    Link to Paper Search Results by DOI
  36. Dynamics and statistics in the operator algebra of quantum mechanics, Reality and Measurement in Algebraic Quantum Theory, NWW 2015, Nagoya, Japan, March 9-13, Springer Proceedings in Mathematics and Statistics, Springer Nature Singapore 2018, 179-194, 2018
    Link to Paper Search Results by DOI
  37. Control of particle propagation beyond the uncertainty limit by interference between position and momentum, PHYSICAL REVIEW A, 98(5), 20181106
    Link to Paper Search Results by DOI
  38. Derivation of the statistics of quantum measurements from the action of unitary dynamics, EUROPEAN PHYSICAL JOURNAL PLUS, 133(3), 20180323
    Link to Paper Search Results by DOI
  39. Photon number statistics of entanglement generated by multiple single photon sources, Proc. SPIE, 10409, 1040904, 201708
    Link to Paper Search Results by DOI
  40. Evaluation of bipartite entanglement between two optical multi-mode systems using mode translation symmetry, NEW JOURNAL OF PHYSICS, 19, 20171025
    Link to Paper Search Results by DOI
  41. ★, Quantum interference of position and momentum: A particle propagation paradox, PHYSICAL REVIEW A, 96(2), 20170828
    Link to Paper Search Results by DOI
  42. Implementation of a quantum controlled-SWAP gate with photonic circuits, SCIENTIFIC REPORTS, 7, 20170331
    Link to Paper Search Results by DOI
  43. Observation of non-classical correlations in sequential measurements of photon polarization, NEW JOURNAL OF PHYSICS, 18, 20161025
    Link to Paper Search Results by DOI
  44. Quantum effects in the interference of photon number states, PHYSICAL REVIEW A, 94(4), 20161010
    Link to Paper Search Results by DOI
  45. ★, On the fundamental role of dynamics in quantum physics, EUROPEAN PHYSICAL JOURNAL D, 70(5), 20160524
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  46. Experimental evaluation of nonclassical correlations between measurement outcomes and target observable in a quantum measurement, PHYSICAL REVIEW A, 93(3), 20160302
    Link to Paper Search Results by DOI
  47. Characterization of measurement uncertainties using the correlations between local outcomes obtained from maximally entangled pairs, PHYSICAL REVIEW A, 92(4), 20151019
    Link to Paper Search Results by DOI
  48. ★, Quantum paradoxes originating from the nonclassical statistics of physical properties related to each other by half-periodic transformations, PHYSICAL REVIEW A, 91(6), 20150622
    Link to Paper Search Results by DOI
  49. Reasonable conditions for joint probabilities of non-commuting observables, Quantum Studies: Mathematics and Foundations, 1(1), 39-45, 20140705
    Link to Paper Search Results by DOI
  50. Derivation of quantum mechanics from a single fundamental modification of the relations between physical properties, PHYSICAL REVIEW A, 89(4), 20140424
    Link to Paper Search Results by DOI
  51. Simultaneous suppression of time and energy uncertainties in a single-photon frequency-comb state, PHYSICAL REVIEW A, 89(5), 20140515
    Link to Paper Search Results by DOI
  52. Radiation pattern of plasmonic nano-antennas in a homogeneous medium, OPTICS EXPRESS, 22(11), 13263-13268, 20140602
    Link to Paper Search Results by DOI
  53. Sequential measurements of non-commuting observables with quantum controlled interactions, NEW JOURNAL OF PHYSICS, 16, 20140624
    Link to Paper Search Results by DOI
  54. An investigation of the transfer dynamics of quantum teleportation by weak measurement statistics, JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL, 46(24), 20130621
    Link to Paper Search Results by DOI
  55. Direct observation of temporal coherence by weak projective measurements of photon arrival time, PHYSICAL REVIEW A, 87(6), 20130619
    Link to Paper Search Results by DOI
  56. Quantum effects in the interaction of off-resonant coherent light with a single atom, PHYSICAL REVIEW A, 88(1), 20130708
    Link to Paper Search Results by DOI
  57. Optimal multi-photon phase sensing with a single interference fringe, SCIENTIFIC REPORTS, 3, 20130925
    Link to Paper Search Results by DOI
  58. ★, Complex joint probabilities as expressions of reversible transformations in quantum mechanics, NEW JOURNAL OF PHYSICS, 14, 20120424
    Link to Paper Search Results by DOI
  59. Clock synchronization using maximal multipartite entanglement, PHYSICAL REVIEW A, 86(1), 20120702
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  60. ★, How Weak Values Emerge in Joint Measurements on Cloned Quantum Systems, PHYSICAL REVIEW LETTERS, 109(2), 20120713
    Link to Paper Search Results by DOI
  61. Analysis of the time-energy entanglement of down-converted photon pairs by correlated single-photon interference, PHYSICAL REVIEW A, 86(4), 20121015
    Link to Paper Search Results by DOI
  62. Estimation of a quantum interaction parameter using weak measurements: Theory and experiment, PHYSICAL REVIEW A, 86(4), 20121022
    Link to Paper Search Results by DOI
  63. Violation of Leggett-Garg inequalities in quantum measurements with variable resolution and back-action, NEW JOURNAL OF PHYSICS, 14, 20121016
    Link to Paper Search Results by DOI
  64. Uncertainty limits for quantum metrology obtained from the statistics of weak measurements, PHYSICAL REVIEW A, 83(2), 20110222
    Link to Paper Search Results by DOI
  65. Weak measurement of photon polarization by back-action-induced path interference, NEW JOURNAL OF PHYSICS, 13, 20110331
    Link to Paper Search Results by DOI
  66. Realization of a Knill-Laflamme-Milburn controlled-NOT photonic quantum circuit combining effective optical nonlinearities, PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 108(25), 10067-10071, 20110621
    Link to Paper Search Results by DOI
  67. Time-resolved measurement of the quantum states of photons using two-photon interference with short-time reference pulses, PHYSICAL REVIEW A, 84(3), 20110913
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  68. On the role of complex phases in the quantum statistics of weak measurements, NEW JOURNAL OF PHYSICS, 13, 20111011
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  69. Interferometric weak measurement of photon polarization, AIP conference proceedings, 1363, 145-148, 20111201
  70. ★, Complete characterization of post-selected quantum statistics using weak measurement tomography, PHYSICAL REVIEW A, 81(1), 201001
    Link to Paper Search Results by DOI
  71. ★, Directional control of light by a nano-optical Yagi-Uda antenna, NATURE PHOTONICS, 4(5), 312-315, 201005
    Link to Paper Search Results by DOI
  72. Effects of photon losses on phase estimation near the Heisenberg limit using coherent light and squeezed vacuum, PHYSICAL REVIEW A, 81(3), 201003
    Link to Paper Search Results by DOI
  73. Analysis of experimental error sources in a linear-optics quantum gate, NEW JOURNAL OF PHYSICS, 12, 20100430
    Link to Paper Search Results by DOI
  74. ★, An Entanglement Filter, SCIENCE, 323(5913), 483-485, 20090123
    Link to Paper Search Results by DOI
  75. ★, All path-symmetric pure states achieve their maximal phase sensitivity in conventional two-path interferometry, PHYSICAL REVIEW A, 79(3), 200903
    Link to Paper Search Results by DOI
  76. How to simulate a universal quantum computer using negative probabilities, JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL, 42(27), 20090710
    Link to Paper Search Results by DOI
  77. Pulse-shape effects on photon-photon interactions in nonlinear optical quantum gates, PHYSICAL REVIEW A, 80(1), 200907
    Link to Paper Search Results by DOI
  78. Reconstruction of spatial qutrit states based on realistic measurement operators, PHYSICAL REVIEW A, 80(6), 200912
    Link to Paper Search Results by DOI
  79. Quantum enhancement of N-photon phase sensitivity by interferometric addition of down-converted photon pairs to weak coherent light, JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 41(9), 20080514
    Link to Paper Search Results by DOI
  80. Measurement and control of spatial qubits generated by passing photons through double slits, PHYSICAL REVIEW A, 78(1), 200807
    Link to Paper Search Results by DOI
  81. Beating the standard quantum limit: phase super-sensitivity of N-photon interferometers, NEW JOURNAL OF PHYSICS, 10, 20080718
    Link to Paper Search Results by DOI
  82. Accidental cloning of a single-photon qubit in two-channel continuous-variable quantum teleportation, PHYSICAL REVIEW A, 75(6), 200706
    Link to Paper Search Results by DOI
  83. ★, Design parameters for a nano-optical Yagi-Uda antenna, NEW JOURNAL OF PHYSICS, 9, 20070706
    Link to Paper Search Results by DOI
  84. ★, High-photon-number path entanglement in the interference of spontaneously down-converted photon pairs with coherent laser light, PHYSICAL REVIEW A, 76(3), 200709
    Link to Paper Search Results by DOI
  85. Generation of a highly phase sensitive polarization squeezed N-photon state by collinear parametric downconversion and photon subtraction, Physical Review A, 74, 013808, 20060401
  86. Optimal cloning of single photon polarization by coherent feedback of beam splitter losses, New Journal of Physics, 8, 130, 20060401
  87. Analysis of an experimental quantum logic gate by complementary classical operations, Modern Physics Letters A, 21, 1837, 20060401
  88. A study on the shape of two-photon wavefunctions after the nonlinear interaction with a one-dimensional atom, Nonlinear Optics= Quantum Optics, 32, 221, 20050401
  89. ★, Complementary classical fidelities as an efficient criterion for the evaluation of experimentally realized quantum operations, Physical Review Letters, 94, 160504, 20050401
  90. Quantum parallelism of the controlled-NOT operation: an experimental criterion for the evaluation of device performance, Physical Review A, 72, 022329, 20050401
  91. Simulation of interaction Hamiltonians by quantum feedback: a comment on the dynamics of information exchange between coupled systems, Journal of Optics B: Quantum and Semicalssical Optics, 7, S208-S214, 20050401
  92. ★, Demonstration of an optical quantum controlled-NOT gate without path interference, Physical Review Letters, 95, 210506, 20050401
  93. Simulation of interaction Hamiltonians by quantum feedback: a comment on the dynamics of information exchange between coupled systems, JOURNAL OF OPTICS B-QUANTUM AND SEMICLASSICAL OPTICS, 7(10), S208-S214, 200510
    Link to Paper Search Results by DOI
  94. Distinguishing genuine entangled two-photon polarization states from independently genarated entangled photons, Physical Review Letters, 92, 153602, 20040401
  95. Quantum-state tomography for spin-l systems, Physical Review A, 69, 042108, 20040401
  96. Efficiencies for the single-mode operation of a quantum optical nonlinear shift gate, Physical Review A, 70, 013810, 20040401
  97. Generation of highly non-classical n-photon polarization states by superbunching at a photon bottleneck, Physical Review A, 70, 023812, 20040401
  98. Effects of decoherence on the nonlinear optical phase shift obtained from a one-dimensional atom, Japanese Journal of Applied Physics, 43, 7495, 20040401
  99. Uncertainty characteristics of generalized quantum measurements, Physical Review A, 67, 022106, 20030401
  100. ★, Optimized phase switching using a single-atom nonlinearity, Journal of Optics B: Quantum and Semiclassical Optics, 5, 218-221, 20030401
  101. Nonlinear interaction of two photons with a one-dimensional atom: spatiotemporal quantum coherence in the emitted field, Physical Review A, 68, 013803, 20030401
  102. ★, Violation of local uncertainty relations as a signature of entanglement, Physical Review A, 68, 032103, 20030401
  103. Bound entangled states violate a non-symmetric local uncertainty relation, Physical Review A, 68, 034307, 20030401
  104. Entanglement and four wave mixing effects in the dissipation free nonlinear interaction of two photons at a single atom, Physical Review A, 68, 043813, 20030401
  105. Continuous-variable teleportation of single-photon states, Physical Review A, 65, 012313, 20020401
  106. Photon echo signature of vibrational superposition states created by femtosecond excitation of molecules, Journal of Optics B: Quantum and Semiclassical Optics, 4, 99-102, 20020401
  107. Quantum filter for nonlocal polarization properties of photonic qubits, Physical Review Letters, 88, 147901, 20020401
  108. Gain tuning and fidelity in continuous variable quantum teleportation, Physical Review A, 65, 062303, 20020401
  109. ★, Quantum phase gate for photonic qubits using only beam splitters and postselection, Physical Review A, 66, 024308, 20020401
  110. Causality in quantum teleportation: Information extraction and noise effects in entanglement distribution, Physical Review A, 66, 032317, 20020401
  111. Finite resolution measurement of the non-classical polarization statistics of entangled photon pairs, Physical Review A, 63, 042106, 20010401
  112. Information losses in continuous variable quantum teleportation, Physical Review A, 64, 040301(R), 20010401
  113. Nonclassical correlations of phase noise and photon number in quantum nondemolition measurements, Physical Review A, 61, 033815, 20000401
  114. Information and noise in quantum measurement, Physical Review A, 62, 022103, 20000401
  115. Nonclassical correlations of photon number and field components in the vacuum state, Physical Review A, 62, 013806, 20000401
  116. Thermal photon statistics in laser light above threshold, Physical Review A, 62, 063807, 20000401
  117. Coexistence of thermal noise and squeezing in the intensity fluctuations of small laser diodes, Journal of the Optical Society of America B, 17, 1926-1933, 20000401
  118. ★, Fidelity and information in the quantum teleportation of continuous variables, Physical Review A, 62, 062304, 20000401
  119. Spatial holeburning effects in the amplified spontaneous emission spectra of the non-lasing supermode in semiconductor laser arrays, Journal of the Optical Society of America B, 16, 137-146, 19990401
  120. Quantum Maxwell-Bloch equations for spatially inhomogeneous semiconductor lasers, Physical Review A, 59, 2342-2358, 19990401
  121. Polarization fluctuations in vertical cavity surface emitting lasers: a key to the mechanism behind polarization stability, Quantum and Semiclassical Optics, 10, 87-96, 19980401
  122. Quantum control by compensation of quantum fluctuations, Optics Express, 2, 339-346, 19980401
  123. Spontaneous emission spectrum of the non-lasing supermodes in semiconductor laser arrays, Optics Letters, 23, 391-393, 19980401
  124. Quantum control of atomic systems by homodyne detection and feedback, Physical Review A, 57, 4877-4888, 19980401
  125. Quantum noise and polarization fluctuations in vertical cavity surfac emitting lasers, Physical Review A, 56, 868-876, 19970401
  126. A dynamical model of the chemical bond, Pflugers Arch - European Journal of Physiology, 18, 354-362, 19970401
  127. The split density model: a unified description of polarization and array dynamics for vertical cavity surface emitting lasers, Quantum and Semiclassical Optics, 9, 749-763, 19970401
  128. Illumination induced inhomogeneity in the carrier density profile of split gate devices, Semiconductor Science and technology, 11, 1085-1089, 19960401
  129. Measurement models for time-resolved spectroscopy: a comment, Quantum and Semiclassical Optics, 7, 489-497, 19950401

Invited Lecture, Oral Presentation, Poster Presentation

  1. Counterfactual control and quantum contextuality in multi-mode interferometers, H. F. Hofmann, J. R. Hance, T. Matsushita, M. Ji, M. Iinuma, SPIE Quantum Comunications and Quantum Imaging XXII, 2024/08/19, With Invitation, English, SPIE, San Diego Convention Center, San Diego, California, USA
  2. Contextuality, Weak Values and Measurement Interaction, H. F. Hofmann, QIP24, 2024/06/13, With Invitation, English, Linneus University, Linneus University, Vaxjo, Sweden
  3. The Physics of Change: Quantum Dynamics and Parameterized Probability, H. F. Hofmann, International Symposium on Creation of Advanced Photonic and Electronic Devices 2024, 2024/03/05, With Invitation, English
  4. Roundtable on Quantum Sensing, H.F. Hofmann, Advanced Research Workshop on Pursuing Quantum Sensing for Reliable Roadmaps, 2023/12/05, With Invitation, English
  5. Quantum optics with many modes and many photons, H. F. Hofmann, Frontier Scientific Report (special lecture), 2023/09/20, With Invitation, English, Shaanxi University of Science and Technology, Shaanxi, China, Online
  6. Contextuality and inequality violations in a three-path interferometer, M. Ji, M. Iinuma, H. F. Hofmann, SPIE Quantum Communications and Quantum Imaging XXI, 2023/08/21, With Invitation, English, SPIE, San Diego Convention Center, San Diego, California, USA
  7. Sequential measurements and the reality of past events, H. F. Hofmann, Quantum Information and Probability QIP23, 2023/06/14, With Invitation, English, Linnaeus Univeristy, Linnaeus Univeristy, Vaxjo, Sweden
  8. Probing the path information hidden in the quantum fluctuations of interference patterns, H. F. Hofmann, T. Matsushita, S. Kuroki, M. Iinuma, SPIE Optics+Photonics, 2022/08/21, With Invitation, English, SPIE, San Diego Convention Center, San Diego, California, USA
    Related URL
  9. Interactions are physical: An explanation of the relation between different measurements and their outcomes, H. F. Hofmann, Quantum Information and Probability: from Foundations to Engineering (QIP22), 2022/06/14, With Invitation, English, Linnaeus University, Linnaeus University, Vaxjo, Sweden
    Related URL
  10. Phase matching between energy-time entanglement and two photon absorption processes, Holger F. Hofmann, Baihong Li, SPIE Optics+Photonics, 2021/08/01, With Invitation, English, SPIE, Hybrid in-person and online meeting, San Diego Conference Center, San Diego, California, USA
  11. Feedback compensation reveals the contextuality of quantum fluctuations, Holger F. Hofmann, OSA Frontiers in Optics, 2020/09/16, With Invitation, English, OSA Quantum Optical Science and Technology Technical Group, online, OSA 20x20 talk
  12. Exploring energy-time entanglement using the dynamics of two-photon absorption, Baihong Li, Holger F. Hofmann, SPIE Quantum Communications and Quantum Imaging XVII, 2020/08/24, With Invitation, English, SPIE, held online from USA
  13. Quantum interference, causality, and the physics of control, Holger F. Hofmann, Quantum Foundations: Measurement & Entanglement, 2020/02/10, With Invitation, English, KEK Tsukuba, KEK Tsukuba
  14. Quantum interactions and the physics of control, Holger F. Hofmann, QIPQC 2019, 2019/12/10, With Invitation, English, IAR, Nagoya University and FRIAS, Freiburg University, Sakata-Hirata Hall, Nagoya University
    Related URL
  15. Time of flight paradox for photons in a dispersive medium, Holger F. Hofmann, SPIE Optics and Photonics 2019, 2019/08/11, With Invitation, English, SPIE, San Diego Convention Center, SanDiego, California, USA
  16. When is experience objective? - Measurement interactions and the emergence of reality, H. F. Hofmann, Quantum Information Revolution: Impact on Foundations, 2019/06/11, With Invitation, English, Linnaeus Univeristy, Linnaeus Univeristy, Vaxjo, Sweden
  17. A statistical analysis of single photon propagation: How quantum interference modifies the laws of motion, H. F. Hofmann, SPIE Quantum Communications and Quantum Imaging XVI, 2018/08/20, With Invitation, English, SPIE, San Diego Convention Center, San Diego, California, USA
  18. Quantum Mechanics as a Theory of Cause and Effect: Why there is no Reality without a Corresponding Action, H. F. Hofmann, 7th International Conference on New Frontiers in Physics (ICNFP 2018), 2018/07/11, With Invitation, English, Orthodox Academy of Crete, Kolymbari, Greece
    Related URL
  19. Superpositions of causality: and analysis of the mechanism of control in the quantum limit, H.F. Hofmann, 3rd International Conference on Quantum Foundations, ICQF-17, 2017/12/07, With Invitation, English, National Institute of Technology Patna, Patna, India, Panache Hotel, Patna, India
  20. Photon number statistics of entanglement generated by multiple single photon sources, J.-Y. Wu, H. F. Hofmann, SPIE Quantum Communications and Quantum Imaging XV Conference, 2017/08/06, With Invitation, English, SPIE, San Diego Convention Center, San Diego, California, USA
  21. Fundamental Investigations into the non-classical nature of quantum correlations, Holger F. Hofmann, JPS 2016 Autumn Meeting, 2016/09/14, With Invitation, English, Japanese Physical Society, Kanazawa University, Japan
  22. Why interactions matter: how the laws of dynamics determine the shape of physical reality, Holger F. Hofmann, Concepts and Paradoxes in a Quantum Universe, 2016/06/24, With Invitation, English, Perimeter Institute, Waterloo, Canada, Perimeter Institute, Waterloo, Canada, Quantum statistics can be explained by the laws of motion governing the dynamics of quantum systems. The origin of uncertainty is traced to the dynamics of the state preparation process.
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  23. How to uncover the physics of quantum correlations through combinations of weak and strong measurements, H.F. Hofmann, International Workshop on Weak Value and Weak Measurement, 2015/03/19, With Invitation, English, Tokyo Institute of Technology, Tokyo Institute of Technology, Ookayama Campus, Tokyo, Japan
  24. From experimental evidence to quantum physics: what measurement reveals about the dynamical structure of reality, H.F. Hofmann, Nagoya Winter Workshop 2015, 2015/03/09, With Invitation, English, Nagoya University, Nagoya University, Nagoya, Japan
  25. Why complex probabilities make sense: New insights into the relations between weak measurements, paradoxical correlations, and causality in quantum systems, Holger F. Hofmann, AQIS 2014, 2014/08/21, With Invitation, English, Asian Quantum Information Science Conference, Shiran Kaikan, Kyoto University, Kyoto, Japan

Awards

  1. 2020/09/23, IOP trusted reviewer, IOP publishing, IOP trusted reviewer
  2. 2015/01/09, APS Outstanding Referee, American Physical Society, Outstanding Referee
  3. 2015/06/17, OSA Senior Membership, Optical Society of America, OSA Senior Member

Social Activities

Organizing Academic Conferences, etc.

  1. Quantum Information and Probability: From Foundations to Engineering, Organizing Committee, 2022/07, 2023/06
    Permalink
  2. QIT 38, 2018/06
    Permalink

Other Social Contributions

  1. The Rational View podcast with Dr. Al Scott, Lemmel and Hofmann experiment with reality, The Rational View podcast with Dr. Al Scott, 2022/05/28, available online, Interviewee, Internet, General
    Related URL
  2. HiCE, HiCE013: Principles of Physics, Hiroshima University, 2018/06/15, Lecturer, Lecture, General
    Related URL

History as Peer Reviews of Academic Papers

  1. 2024, Foundations of Physics, Others, Referee, 1
  2. 2024, Physical Review, Others, Referee, 6
  3. 2023, Quantum Studies, Reviewer, 1
  4. 2023, Quantum, Others, Reviewer, 1
  5. 2023, Physical Review, Others, Reviewer, 4
  6. 2022, Quantum Studies: Mathematics and Foundations, Others, Reviewer, 1
  7. 2022, Science Advances, Others, Reviewer, 1
  8. 2022, Annals of Mathematics and Physics, Others, Reviewer, 1
  9. 2022, Physical Review A, Others, Reviewer, 6
  10. 2021, Quantum Studies, Others, Referee, 2
  11. 2021, Scientific Reports, Others, Referee, 1
  12. 2021, Physics Letters A, Others, Referee, 1
  13. 2021, Physical Review, Others, Referee, 10
  14. 2020, The European Physical Journal D, Others, Referee, 1
  15. 2020, Scientific Reports, Others, Referee, 1
  16. 2020, Entropy, Editor, Guest Editor
  17. 2020, New Journal of Physics, Others, Referee, 2
  18. 2020, Foundations of Physics, Others, Referee, 2
  19. 2020, Physical Review, Others, Referee, 13
  20. 2019, Physical Review A, Others, Referee, 4
  21. 2019, New Journal of Physics, Others, Referee, 1
  22. 2019, Optica, Others, Referee, 1
  23. 2018, Physical Review, Others, Referee, 4
  24. 2018, New Journal of Physics, Others, Referee, 1
  25. 2018, Nature Physics, Others, Reviewer, 1
  26. 2018, Quantum Studies: Mathematics and Foundations, Others, Referee, 1
  27. 2017, Physical Review, Others, Referee, 4
  28. 2017, Journal of Physics A, Others, Referee, 1
  29. 2017, Quantum Science and Technology, Others, Referee, 1
  30. 2016, Physical Review, Referee, 6
  31. 2016, Scientific Reports, Others, Referee, 1
  32. 2015, Physical Review, Others, Referee, 9
  33. 2015, New Journal of Physics, Others, Referee, 1
  34. 2015, Journal of Physics A, Others, Referee, 1
  35. 2014, Physical Review A, Others, Referee, 12