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Proceedings Paper

Fundamentals of the quantum covariance matrix and its implications for entanglement detection and sensing (Conference Presentation)
Author(s): Eliahu Cohen

Paper Abstract

Two seemingly different questions arise on the interface between quantum mechanics and gravity: How is a spin affected by a gravitational field? How is spacetime affected by a spin? With regards to the first, we propose opto-atomic interference experiments for testing the predictions of Dirac equation in curved spacetime. We then present a thought experiment [arXiv:1812.11450], which enables a quantum informational analysis of the second question. Within this framework, several known models are shown to contradict relativistic causality and hence they have to be modified or replaced. Our results suggest a general spin-spacetime censorship principle in nature.

Paper Details

Date Published: 17 March 2020
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Proc. SPIE 11296, Optical, Opto-Atomic, and Entanglement-Enhanced Precision Metrology II, 1129644 (17 March 2020); doi: 10.1117/12.2546495
Show Author Affiliations
Eliahu Cohen, Bar-Ilan Univ. (Israel)


Published in SPIE Proceedings Vol. 11296:
Optical, Opto-Atomic, and Entanglement-Enhanced Precision Metrology II
Selim M. Shahriar; Jacob Scheuer, Editor(s)

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