Quantum States of Fields for Quantum Split Sources

Author:

Chen Lin-Qing12,Giacomini Flaminia23,Rovelli Carlo345

Affiliation:

1. Centre for Quantum Information and Communication, Université Libre de Bruxelles, 1050 Brussels, Belgium.

2. Institute for Theoretical Physics, ETH Zürich, 8093 Zürich, Switzerland

3. Perimeter Institute for Theoretical Physics, 31 Caroline St. N, Waterloo, Ontario, N2L 2Y5, Canada.

4. Aix-Marseille University, Université de Toulon, CPT-CNRS, F-13288 Marseille, France.

5. Department of Philosophy and the Rotman Institute of Philosophy, 1151 Richmond St. N London N6A5B7, Canada.

Abstract

Field mediated entanglement experiments probe the quantum superposition of macroscopically distinct field configurations. We show that this phenomenon can be described by using a transparent quantum field theoretical formulation of electromagnetism and gravity in the field basis. The strength of such a description is that it explicitly displays the superposition of macroscopically distinct states of the field. In the case of (linearised) quantum general relativity, this formulation exhibits the quantum superposition of geometries giving rise to the effect.

Funder

the QISS Consortium, John Templeton Foundation

the Ambizione Grant, Swiss National Science Foundation

Publisher

Verein zur Forderung des Open Access Publizierens in den Quantenwissenschaften

Subject

Physics and Astronomy (miscellaneous),Atomic and Molecular Physics, and Optics

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