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Title: Time reflection of light from a quantum perspective and vacuum entanglement

Journal Article · · Optics Express
DOI: https://doi.org/10.1364/OE.520671 · OSTI ID:2336824

If a boundary between two static media is moving with a constant superluminal velocity, or there is a sudden change of the refractive index with time, this yields generation of entangled pairs of photons out of vacuum propagating in the opposite directions. Here we show that during this process, entanglement of Minkowski vacuum is transferred to the entanglement of the generated photon pairs. If initially an electromagnetic pulse is present in the medium the photon generation is stimulated into the pulse mode, and since photons are created as entangled pairs the counter-propagating photon partners produce a pulse moving in the opposite direction, which is known as time reflection. Thus, time reflection occurs due to stimulated generation of the entangled photon pairs out of entangled vacuum and no photons in the original pulse are in fact being reflected. This is different from the mechanism of light reflection from spatial inhomogeneities for which no photons are generated.

Sponsoring Organization:
USDOE
Grant/Contract Number:
SC0023103; SC0024882
OSTI ID:
2336824
Journal Information:
Optics Express, Journal Name: Optics Express Journal Issue: 9 Vol. 32; ISSN 1094-4087; ISSN OPEXFF
Publisher:
Optical Society of AmericaCopyright Statement
Country of Publication:
United States
Language:
English

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