Last Updated :2021/05/06

Affiliations, Positions
Graduate School of Advanced Science and Engineering, Professor

Basic Information

Academic Degrees

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

Research Fields

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

Research Keywords

  • Quantum Optics, Quantum Information, Foundations of Quantum Theory

Educational Activity

Course in Charge

  1. 2021, Liberal Arts Education Program1, 1Term, Principles of Physics
  2. 2021, Undergraduate Education, 3Term, Electromagnetism II
  3. 2021, Undergraduate Education, 3Term, Exercise of Electromagnetism II
  4. 2021, Graduate Education (Master's Program) , 1Term, Quantum Optics
  5. 2021, Graduate Education (Master's Program) , First Semester, Seminar on Electronics A
  6. 2021, Graduate Education (Master's Program) , Second Semester, Seminar on Electronics B
  7. 2021, Graduate Education (Master's Program) , Academic Year, Academic Presentation in Electronics
  8. 2021, Graduate Education (Master's Program) , 1Term, Exercises in Electronics A
  9. 2021, Graduate Education (Master's Program) , 2Term, Exercises in Electronics A
  10. 2021, Graduate Education (Master's Program) , 3Term, Exercises in Electronics B
  11. 2021, Graduate Education (Master's Program) , 4Term, Exercises in Electronics B
  12. 2021, Graduate Education (Master's Program) , 1Term, Quantum Optics
  13. 2021, Graduate Education (Master's Program) , Academic Year, Advanced Study in Quantum Matter
  14. 2021, Graduate Education (Doctoral Program) , Academic Year, Advanced Study in Quantum Matter

Research Activities

Academic Papers

  1. 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
  2. ★, Direct evaluation of measurement uncertainties by feedback compensation of decoherence, Physical Review Research, 3, L012011, 20210203
  3. Contextuality of quantum fluctuations characterized by conditional weak values of entangled states, Physical Review A, 102, 062215, 20201222
  4. Exploring energy-time entanglement using the dynamics of two-photon absorption, Proc. SPIE, 11507, 115070K, 202008
  5. Time of flight paradox for photons in a dispersive medium, Proc. SPIE, 11134, 111340H, 201909
  6. Direct and efficient verification of entanglementbetween two multimode–multiphoton systems, Optica, 7, 1517-1523, 20201029
  7. Quantum causality relations and the emergence of reality from coherent superpositions, Foundations of Physics, 20200518
  8. What Does the Operator Algebra of Quantum Statistics Tell Us about the Objective Causes of Observable Effects?, ENTROPY, 22(6), 202006
  9. ★, 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
  10. Local measurement uncertainties impose a limit on nonlocal quantum correlations, Physical Review A, 100, 012123, 20190722
  11. 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
  12. Experimental evaluation of the nonclassical relation between measurement errors using entangled photon pairs as a probe, Physical Review A, 98, 062109, 20181207
  13. Experimental evaluation of the nonclassical relation between measurement errors using entangled photon pairs as a probe, PHYSICAL REVIEW A, 98(6), 20181207
  14. Photon number statistics of entanglement generated by multiple single photon sources, Proc. SPIE, 10409, 1040904, 201708
  15. A statistical analysis of single photon propagation: how quantum interference modifies the laws of motion, Proc. SPIE, 10771, 1077115, 201809
  16. 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
  17. Control of particle propagation beyond the uncertainty limit by interference between position and momentum, PHYSICAL REVIEW A, 98(5), 20181106
  18. Derivation of the statistics of quantum measurements from the action of unitary dynamics, EUROPEAN PHYSICAL JOURNAL PLUS, 133(3), 20180323
  19. Evaluation of bipartite entanglement between two optical multi-mode systems using mode translation symmetry, NEW JOURNAL OF PHYSICS, 19, 20171025
  20. ★, Quantum interference of position and momentum: A particle propagation paradox, PHYSICAL REVIEW A, 96(2), 20170828
  21. Implementation of a quantum controlled-SWAP gate with photonic circuits, SCIENTIFIC REPORTS, 7, 20170331
  22. Observation of non-classical correlations in sequential measurements of photon polarization, NEW JOURNAL OF PHYSICS, 18, 20161025
  23. Quantum effects in the interference of photon number states, PHYSICAL REVIEW A, 94(4), 20161010
  24. ★, On the fundamental role of dynamics in quantum physics, EUROPEAN PHYSICAL JOURNAL D, 70(5), 20160524
  25. Experimental evaluation of nonclassical correlations between measurement outcomes and target observable in a quantum measurement, PHYSICAL REVIEW A, 93(3), 20160302
  26. Characterization of measurement uncertainties using the correlations between local outcomes obtained from maximally entangled pairs, PHYSICAL REVIEW A, 92(4), 20151019
  27. Reasonable conditions for joint probabilities of non-commuting observables, Quantum Studies: Mathematics and Foundations, 1(1), 39-45, 20140705
  28. ★, Quantum paradoxes originating from the nonclassical statistics of physical properties related to each other by half-periodic transformations, PHYSICAL REVIEW A, 91(6), 20150622
  29. Derivation of quantum mechanics from a single fundamental modification of the relations between physical properties, PHYSICAL REVIEW A, 89(4), 20140424
  30. Simultaneous suppression of time and energy uncertainties in a single-photon frequency-comb state, PHYSICAL REVIEW A, 89(5), 20140515
  31. Radiation pattern of plasmonic nano-antennas in a homogeneous medium, OPTICS EXPRESS, 22(11), 13263-13268, 20140602
  32. Sequential measurements of non-commuting observables with quantum controlled interactions, NEW JOURNAL OF PHYSICS, 16, 20140624
  33. Direct observation of temporal coherence by weak projective measurements of photon arrival time, PHYSICAL REVIEW A, 87(6), 20130619
  34. An investigation of the transfer dynamics of quantum teleportation by weak measurement statistics, JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL, 46(24), 20130621
  35. Quantum effects in the interaction of off-resonant coherent light with a single atom, PHYSICAL REVIEW A, 88(1), 20130708
  36. Optimal multi-photon phase sensing with a single interference fringe, SCIENTIFIC REPORTS, 3, 20130925
  37. ★, Complex joint probabilities as expressions of reversible transformations in quantum mechanics, NEW JOURNAL OF PHYSICS, 14, 20120424
  38. Clock synchronization using maximal multipartite entanglement, PHYSICAL REVIEW A, 86(1), 20120702
  39. ★, How Weak Values Emerge in Joint Measurements on Cloned Quantum Systems, PHYSICAL REVIEW LETTERS, 109(2), 20120713
  40. Analysis of the time-energy entanglement of down-converted photon pairs by correlated single-photon interference, PHYSICAL REVIEW A, 86(4), 20121015
  41. Violation of Leggett-Garg inequalities in quantum measurements with variable resolution and back-action, NEW JOURNAL OF PHYSICS, 14, 20121016
  42. Estimation of a quantum interaction parameter using weak measurements: Theory and experiment, PHYSICAL REVIEW A, 86(4), 20121022
  43. Uncertainty limits for quantum metrology obtained from the statistics of weak measurements, PHYSICAL REVIEW A, 83(2), 20110222
  44. Weak measurement of photon polarization by back-action-induced path interference, NEW JOURNAL OF PHYSICS, 13, 20110331
  45. 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
  46. Time-resolved measurement of the quantum states of photons using two-photon interference with short-time reference pulses, PHYSICAL REVIEW A, 84(3), 20110913
  47. On the role of complex phases in the quantum statistics of weak measurements, NEW JOURNAL OF PHYSICS, 13, 20111011
  48. Interferometric weak measurement of photon polarization, AIP conference proceedings, 1363, 145-148, 20111201
  49. ★, Complete characterization of post-selected quantum statistics using weak measurement tomography, PHYSICAL REVIEW A, 81(1), 201001
  50. Effects of photon losses on phase estimation near the Heisenberg limit using coherent light and squeezed vacuum, PHYSICAL REVIEW A, 81(3), 201003
  51. Analysis of experimental error sources in a linear-optics quantum gate, NEW JOURNAL OF PHYSICS, 12, 20100430
  52. ★, Directional control of light by a nano-optical Yagi-Uda antenna, NATURE PHOTONICS, 4(5), 312-315, 201005
  53. ★, An Entanglement Filter, SCIENCE, 323(5913), 483-485, 20090123
  54. ★, All path-symmetric pure states achieve their maximal phase sensitivity in conventional two-path interferometry, PHYSICAL REVIEW A, 79(3), 200903
  55. Pulse-shape effects on photon-photon interactions in nonlinear optical quantum gates, PHYSICAL REVIEW A, 80(1), 200907
  56. How to simulate a universal quantum computer using negative probabilities, JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL, 42(27), 20090710
  57. Reconstruction of spatial qutrit states based on realistic measurement operators, PHYSICAL REVIEW A, 80(6), 200912
  58. 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
  59. Measurement and control of spatial qubits generated by passing photons through double slits, PHYSICAL REVIEW A, 78(1), 200807
  60. Beating the standard quantum limit: phase super-sensitivity of N-photon interferometers, NEW JOURNAL OF PHYSICS, 10, 20080718
  61. ★, Design parameters for a nano-optical Yagi-Uda antenna, NEW JOURNAL OF PHYSICS, 9, 20070706
  62. ★, High-photon-number path entanglement in the interference of spontaneously down-converted photon pairs with coherent laser light, PHYSICAL REVIEW A, 76(3), 200709
  63. Accidental cloning of a single-photon qubit in two-channel continuous-variable quantum teleportation, PHYSICAL REVIEW A, 75(6), 200706
  64. Generation of a highly phase sensitive polarization squeezed N-photon state by collinear parametric downconversion and photon subtraction, Physical Review A, 74, 013808, 20060401
  65. Optimal cloning of single photon polarization by coherent feedback of beam splitter losses, New Journal of Physics, 8, 130, 20060401
  66. Analysis of an experimental quantum logic gate by complementary classical operations, Modern Physics Letters A, 21, 1837, 20060401
  67. 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
  68. ★, Complementary classical fidelities as an efficient criterion for the evaluation of experimentally realized quantum operations, Physical Review Letters, 94, 160504, 20050401
  69. Quantum parallelism of the controlled-NOT operation: an experimental criterion for the evaluation of device performance, Physical Review A, 72, 022329, 20050401
  70. 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
  71. ★, Demonstration of an optical quantum controlled-NOT gate without path interference, Physical Review Letters, 95, 210506, 20050401
  72. 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
  73. Distinguishing genuine entangled two-photon polarization states from independently genarated entangled photons, Physical Review Letters, 92, 153602, 20040401
  74. Quantum-state tomography for spin-l systems, Physical Review A, 69, 042108, 20040401
  75. Efficiencies for the single-mode operation of a quantum optical nonlinear shift gate, Physical Review A, 70, 013810, 20040401
  76. Generation of highly non-classical n-photon polarization states by superbunching at a photon bottleneck, Physical Review A, 70, 023812, 20040401
  77. Effects of decoherence on the nonlinear optical phase shift obtained from a one-dimensional atom, Japanese Journal of Applied Physics, 43, 7495, 20040401
  78. Uncertainty characteristics of generalized quantum measurements, Physical Review A, 67, 022106, 20030401
  79. ★, Optimized phase switching using a single-atom nonlinearity, Journal of Optics B: Quantum and Semiclassical Optics, 5, 218-221, 20030401
  80. Nonlinear interaction of two photons with a one-dimensional atom: spatiotemporal quantum coherence in the emitted field, Physical Review A, 68, 013803, 20030401
  81. ★, Violation of local uncertainty relations as a signature of entanglement, Physical Review A, 68, 032103, 20030401
  82. Bound entangled states violate a non-symmetric local uncertainty relation, Physical Review A, 68, 034307, 20030401
  83. 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
  84. Continuous-variable teleportation of single-photon states, Physical Review A, 65, 012313, 20020401
  85. 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
  86. Quantum filter for nonlocal polarization properties of photonic qubits, Physical Review Letters, 88, 147901, 20020401
  87. Gain tuning and fidelity in continuous variable quantum teleportation, Physical Review A, 65, 062303, 20020401
  88. ★, Quantum phase gate for photonic qubits using only beam splitters and postselection, Physical Review A, 66, 024308, 20020401
  89. Causality in quantum teleportation: Information extraction and noise effects in entanglement distribution, Physical Review A, 66, 032317, 20020401
  90. Finite resolution measurement of the non-classical polarization statistics of entangled photon pairs, Physical Review A, 63, 042106, 20010401
  91. Information losses in continuous variable quantum teleportation, Physical Review A, 64, 040301(R), 20010401
  92. Nonclassical correlations of phase noise and photon number in quantum nondemolition measurements, Physical Review A, 61, 033815, 20000401
  93. Information and noise in quantum measurement, Physical Review A, 62, 022103, 20000401
  94. Nonclassical correlations of photon number and field components in the vacuum state, Physical Review A, 62, 013806, 20000401
  95. Thermal photon statistics in laser light above threshold, Physical Review A, 62, 063807, 20000401
  96. 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
  97. ★, Fidelity and information in the quantum teleportation of continuous variables, Physical Review A, 62, 062304, 20000401
  98. 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
  99. Quantum Maxwell-Bloch equations for spatially inhomogeneous semiconductor lasers, Physical Review A, 59, 2342-2358, 19990401
  100. Polarization fluctuations in vertical cavity surface emitting lasers: a key to the mechanism behind polarization stability, Quantum and Semiclassical Optics, 10, 87-96, 19980401
  101. Quantum control by compensation of quantum fluctuations, Optics Express, 2, 339-346, 19980401
  102. Spontaneous emission spectrum of the non-lasing supermodes in semiconductor laser arrays, Optics Letters, 23, 391-393, 19980401
  103. Quantum control of atomic systems by homodyne detection and feedback, Physical Review A, 57, 4877-4888, 19980401
  104. Quantum noise and polarization fluctuations in vertical cavity surfac emitting lasers, Physical Review A, 56, 868-876, 19970401
  105. A dynamical model of the chemical bond, Pflugers Arch - European Journal of Physiology, 18, 354-362, 19970401
  106. 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
  107. Illumination induced inhomogeneity in the carrier density profile of split gate devices, Semiconductor Science and technology, 11, 1085-1089, 19960401
  108. Measurement models for time-resolved spectroscopy: a comment, Quantum and Semiclassical Optics, 7, 489-497, 19950401

Invited Lecture, Oral Presentation, Poster Presentation

  1. 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
  2. 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
  3. 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
  4. 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
  5. 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
  6. 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
  7. 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
  8. 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
  9. 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
  10. 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
  11. 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
  12. 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.
  13. 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
  14. 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
  15. 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


  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. QIT 38, 2018/06

History as Peer Reviews of Academic Papers

  1. 2020, The European Physical Journal D, Others, Referee, 1
  2. 2020, Scientific Reports, Others, Referee, 1
  3. 2020, Entropy, Editor, Guest Editor
  4. 2020, New Journal of Physics, Others, Referee, 2
  5. 2020, Foundations of Physics, Others, Referee, 2
  6. 2020, Physical Review, Others, Referee, 13
  7. 2019, Physical Review A, Others, Referee, 4
  8. 2019, New Journal of Physics, Others, Referee, 1
  9. 2019, Optica, Others, Referee, 1
  10. 2018, Physical Review, Others, Referee, 4
  11. 2018, New Journal of Physics, Others, Referee, 1
  12. 2018, Nature Physics, Others, Reviewer, 1
  13. 2018, Quantum Studies: Mathematics and Foundations, Others, Referee, 1
  14. 2017, Physical Review, Others, Referee, 4
  15. 2017, Journal of Physics A, Others, Referee, 1
  16. 2017, Quantum Science and Technology, Others, Referee, 1
  17. 2016, Physical Review, Referee, 6
  18. 2016, Scientific Reports, Others, Referee, 1
  19. 2015, Physical Review, Others, Referee, 9
  20. 2015, New Journal of Physics, Others, Referee, 1
  21. 2015, Journal of Physics A, Others, Referee, 1
  22. 2014, Physical Review A, Others, Referee, 12