Angular Momentum Flows without anything carrying it
Abstract: Transfer of conserved quantities between two remote regions is generally assumed to be a rather trivial process: a flux of particles carrying the conserved quantities propagates from one region to another. We however demonstrate a flow of angular momentum from one region to another across a region of space in which there is a vanishingly small probability of any particles (or fields) being present. This shows that the usual view of how conservation laws work needs to be revisited.
- Y. Aharonov, E. Cohen, and S. Popescu, A dynamical quantum cheshire cat effect and implications for counterfactual communication, Nat. Commun. 12, 4770 (2021).
- J. M. Ashby, P. D. Schwarz, and M. Schlosshauer, Observation of the quantum paradox of separation of a single photon from one of its properties, Phys. Rev. A 94, 012102 (2016).
- Y. Guryanova, N. Brunner, and S. Popescu, The complete quantum cheshire cat, arXiv:quant-ph/1203.4215 (2012).
- I. Ibnouhsein and A. Grinbaum, Twin quantum cheshire photons, arXiv:quant-ph/1202.4894 (2014).
- A. D. Lorenzo, Hunting for the quantum cheshire cat, arXiv:quant-ph/1205.3755 (2013).
- A. K. Pan, Disembodiment of arbitrary number of properties in quantum cheshire cat experiment, Eur. Phys. J. D 74, 151 (2020).
- D. Das and A. K. Pati, Teleporting grin of a quantum chesire cat without cat, arXiv:quant-ph/1903.04152 (2019).
- D. Das and A. K. Pati, Can two quantum cheshire cats exchange grins?, New J. Phys. 22, 063032 (2020).
- A. Elitzur and L. Vaidman, Quantum-mechanical interaction-free measurements, Found. Phys. 23, 987 (1993).
- R. Jozsa, Quantum effects in algorithms, in Quantum Computing and Quantum Communications, Lecture Notes In Computer Science, Vol. 1509, edited by C. Williams (1999) pp. 103–112.
- G. Mitchison and R. Jozsa, Counterfactual computation, Proc. R. Soc. London, Ser. A 457, 1175 (2001).
- L. Vaidman, Impossibility of the counterfactual computation for all possible outcomes, Phys. Rev. Lett. 98, 160403 (2007).
- G. Mitchison and R. Jozsa, The limits of counterfactual computation, arXiv:quant-ph/0606092 (2007).
- T.-G. Noh, Counterfactual quantum cryptography, Phys. Rev. Lett. 103, 230501 (2009).
- G.-C. Guo and B.-S. Shi, Quantum cryptography based on interaction-free measurement, Phys. Lett. A 256, 109 (1999).
- H. Salih, Protocol for counterfactually transporting an unknown qubit, Front. Phys. 3, 94 (2016).
- R. B. Griffiths, Particle path through a nested mach-zehnder interferometer, Phys. Rev. A 94, 032115 (2016).
- L. Vaidman, Comment on “particle path through a nested mach-zehnder interferometer”, Phys. Rev. A 95, 066101 (2017).
- H. Salih, Comment on “particle path through a nested mach-zehnder interferometer”, Phys. Rev. A 97, 026101 (2018).
- R. B. Griffiths, Reply to “comment on ‘particle path through a nested mach-zehnder interferometer’ “, Phys. Rev. A 95, 066102 (2017).
- R. B. Griffiths, Reply to “comment on ‘particle path through a nested mach-zehnder interferometer’ “, Phys. Rev. A 97, 026102 (2018).
- L. Vaidman, Counterfactuality of ‘counterfactual’ communication, J. Phys. A: Math. Theor. 48, 465303 (2015).
- D. R. M. Arvidsson-Shukur, C. H. W. Barnes, and A. N. O. Gottfries, Evaluation of counterfactuality in counterfactual communication protocols, Phys. Rev. A 96, 062316 (2017).
- L. Vaidman, Comment on “protocol for direct counterfactual quantum communication”, Phys. Rev. Lett. 112, 208901 (2014).
- H. Salih, Z. H. Li, M. Al-Amri, and M. S. Zubairy, Comment on “protocol for direct counterfactual quantum communication” reply, Phys. Rev. Lett. 112, 208902 (2014).
- L. Vaidman, Past of a quantum particle, Phys. Rev. A 87, 052104 (2013).
- Y. Aharonov and L. Vaidman, Modification of counterfactual communication protocols that eliminates weak particle traces, Phys. Rev. A 99, 010103 (2019).
- Y. Aharonov and D. Rohrlich, What is nonlocal in counterfactual quantum communication?, Phys. Rev. Lett. 125, 260401 (2020).
- L. Vaidman, Analysis of counterfactuality of counterfactual communication protocols, Phys. Rev. A 99, 052127 (2019).
Paper Prompts
Sign up for free to create and run prompts on this paper using GPT-5.
Top Community Prompts
Collections
Sign up for free to add this paper to one or more collections.