- Letter
- Open Access
Angular momentum flow without anything carrying it
Phys. Rev. A 110, L030201 – Published 5 September, 2024
DOI: https://doi.org/10.1103/PhysRevA.110.L030201
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. However, we 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.
Physics Subject Headings (PhySH)
Article Text
Supplemental Material
References (40)
- Y. Aharonov, E. Cohen, and S. Popescu, A dynamical quantum Cheshire Cat effect and implications for counterfactual communication, Nat. Commun. 12, 4770 (2021).
- Y. Aharonov, S. Popescu, D. Rohrlich, and P. Skrzypczyk, Quantum Cheshire Cats, New J. Phys. 15, 113015 (2013).
- T. Denkmayr, H. Geppert, S. Sponar, H. Lemmel, A. Matzkin, J. Tollaksen, and Y. Hasegawa, Observation of a quantum Cheshire Cat in a matter-wave interferometer experiment, Nat. Commun. 5, 4492 (2014).
- 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. Kim, D.-G. Im, Y.-S. Kim, S.-W. Han, S. Moon, Y.-H. Kim, and Y.-W. Cho, Observing the quantum Cheshire Cat effect with noninvasive weak measurement, npj Quantum Inf. 7, 13 (2021).
- J.-K. Li, K. Sun, Y. Wang, Z.-Y. Hao, Z.-H. Liu, J. Zhou, X.-Y. Fan, J.-L. Chen, J.-S. Xu, C.-F. Li, and G.-C. Guo, Experimental demonstration of separating the wave-particle duality of a single photon with the quantum Cheshire Cat, Light: Sci. Appl. 12, 18 (2023).
- Y. Guryanova, N. Brunner, and S. Popescu, The complete quantum Cheshire Cat, arXiv:1203.4215.
- I. Ibnouhsein and A. Grinbaum, Twin quantum Cheshire photons, arXiv:1202.4894.
- A. D. Lorenzo, Hunting for the quantum Cheshire Cat, arXiv:1205.3755.
- 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:1903.04152.
- D. Das and A. K. Pati, Can two quantum Cheshire Cats exchange grins? New J. Phys. 22, 063032 (2020).
- Z.-H. Liu, W.-W. Pan, X.-Y. Xu, M. Yang, J. Zhou, Z.-Y. Luo, K. Sun, J.-L. Chen, J.-S. Xu, C.-F. Li, and G.-C. Guo, Experimental exchange of grins between quantum Cheshire Cats, Nat. Commun. 11, 3006 (2020).
- A. Elitzur and L. Vaidman, Quantum-mechanical interaction-free measurements, Found. Phys. 23, 987 (1993).
- P. Kwiat, H. Weinfurter, T. Herzog, A. Zeilinger, and M. A. Kasevich, Interaction-free measurement, Phys. Rev. Lett. 74, 4763 (1995).
- L. Hardy, Quantum mechanics, local realistic theories, and lorentz-invariant realistic theories, Phys. Rev. Lett. 68, 2981 (1992).
- R. Jozsa, Quantum effects in algorithms, in Quantum Computing and Quantum Communications, edited by C. Williams, Lecture Notes In Computer Science Vol. 1509, (Springer, Berlin, Heidelberg, 1999), pp. 103–112.
- G. Mitchison and R. Jozsa, Counterfactual computation, Proc. R. Soc. London Ser. A 457, 1175 (2001).
- O. Hosten, M. Rakher, J. Barreiro, N. Peters, and P. Kwiat, Counterfactual quantum computation through quantum interrogation, Nature (London) 439, 949 (2006).
- 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.
- 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, Z.-H. Li, M. Al-Amri, and M. S. Zubairy, Protocol for direct counterfactual quantum communication, Phys. Rev. Lett. 110, 170502 (2013).
- 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 48, 465303 (2015).
- D. R. M. Arvidsson-Shukur, A. N. O. Gottfries, and C. H. W. Barnes, 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, Reply to “Comment on ‘Protocol for direct counterfactual quantum communication', ” Phys. Rev. Lett. 112, 208902 (2014).
- A. Danan, D. Farfurnik, S. Bar-Ad, and L. Vaidman, Asking photons where they have been, Phys. Rev. Lett. 111, 240402 (2013).
- 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(R) (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).
- See Supplemental Material at http://link.aps.org/supplemental/10.1103/PhysRevA.110.L030201 for 1. The calculation of the Angular Momentum Flux and 2. The calculation of the Linear Momentum Transfer.