Free-fall of photons in a planar optical cavity

We consider a planar optical cavity with one of its in-plane axis aligned with the Earth's local gravity field. We examine the motion of a wavepacket of light trapped within the cavity spacer under the action of gravity. Using a general relativity framework, we find that the wavepacket initiall...

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Bibliographic Details
Published inJournal of physics communications Vol. 3; no. 4; pp. 45007 - 45013
Main Author Richard, Maxime
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.04.2019
Subjects
Condensed Matter
dispersion relation
gravitation
optical cavity
photonics
Physics
Quantum Gases
Quantum Physics
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ISSN2399-6528
2399-6528
DOI10.1088/2399-6528/ab159a

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Summary:We consider a planar optical cavity with one of its in-plane axis aligned with the Earth's local gravity field. We examine the motion of a wavepacket of light trapped within the cavity spacer under the action of gravity. Using a general relativity framework, we find that the wavepacket initially at rest in terms of its in-plane group velocity, is subject to a non-relativistic free-fall motion of acceleration g in the Earth-bound reference frame.
Bibliography:JPCO-101019.R2
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ISSN:2399-6528
2399-6528
DOI:10.1088/2399-6528/ab159a