Is quantum mechanics “spooky”?

by Dr. Daniel Rohrlich

Ben-Gurion University Of The Negev

at Quantum optics seminar

Wed, 01 May 2019, 15:00
Sacta-Rashi Building for Physics (54), room 207

Abstract

Nonlocal quantum correlations do not allow communication, but Einstein called them “spooky action at a distance”. The “counterfactual quantum communication” (CQC) of Salih et al. [1] is spookier: Bob can send information to Alice without any physical particle traveling between them! We demonstrate, however, what Salih et al. [1] overlooked: a locally conserved current carries the information. In keeping with [1], this current is massless: it is a locally conserved current of some property of the particle, such as its angular momentum, but not of the particle itself. We previously [2] obtained this result using weak values of angular momentum; here we do without weak values.

[1] H. Salih et al., Phys. Rev. Lett. 110, 170502 (2013)
[2] D. Rohrlich, Y. Aharonov and T. Landsberger, EPJ Web of Conferences 182: 6th International Conference on New Frontiers in Physics (ICNFP 2017), Crete, Greece, August 17-29, 2017, eds. Y. Aharonov, L. Bravina and S. Kabana (Eds.) (2018), 02105.

Created on 28-04-2019 by Folman, Ron (folman)
Updaded on 28-04-2019 by Folman, Ron (folman)