Generation of entanglement from mechanical rotation

Toroš, M. , Cromb, M., Paternostro, M. and Faccio, D. (2022) Generation of entanglement from mechanical rotation. Physical Review Letters, 129(26), 260401. (doi: 10.1103/PhysRevLett.129.260401) (PMID:36608206)

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Many phenomena and fundamental predictions, ranging from Hawking radiation to the early evolution of the Universe rely on the interplay between quantum mechanics and gravity or more generally, quantum mechanics in curved spacetimes. However, our understanding is hindered by the lack of experiments that actually allow us to probe quantum mechanics in curved spacetime in a repeatable and accessible way. Here we propose an experimental scheme for a photon that is prepared in a path superposition state across two rotating Sagnac interferometers that have different diameters and thus represent a superposition of two different spacetimes. We predict the generation of genuine entanglement even at low rotation frequencies and show how these effects could be observed even due to the Earth’s rotation. These predictions provide an accessible platform in which to study the role of the underlying spacetime in the generation of entanglement.

Item Type:Articles
Additional Information:The authors acknowledge financial support from the Leverhulme Trust (Grants No. RPG-2020-197 and No. RPG-2018-266), the European Union’s Horizon 2020 FET-Open project TEQ (766900), the Horizon Europe EICPathfinder project QuCoM (101046973), the Royal Society Wolfson Fellowship (RSWF/R3/183013), the UK EPSRC (Grants No. EP/T028424/1, No. EP/T00097X/1, No. EP/ W007444/1, No. EP/R030413/1, No. EP/M01326X/1, No. EP/R030081/1), the Department for the Economy Northern Ireland under the US-Ireland R&D Partnership Programme, and the Royal Academy of Engineering Chair in Emerging Technologies programme.
Glasgow Author(s) Enlighten ID:Faccio, Professor Daniele and Cromb, Mx Marion and Toros, Dr Marko
Authors: Toroš, M., Cromb, M., Paternostro, M., and Faccio, D.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Physical Review Letters
Publisher:American Physical Society
ISSN (Online):1079-7114
Published Online:21 December 2022
Copyright Holders:Copyright © 2022 The American Physical Society
First Published:First published in Physical Review Letters 129(26): 260401
Publisher Policy:Reproduced under a Creative Commons License

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
308508Quantum Mechanics in a Rotating WorldMiles PadgettLeverhulme Trust (LEVERHUL)RPG-2020-197P&S - Physics & Astronomy
305567QuantIC - The UK Quantum Technoogy Hub in Quantum Enhanced ImagingMiles PadgettEngineering and Physical Sciences Research Council (EPSRC)EP/T00097X/1P&S - Physics & Astronomy
190841UK Quantum Technology Hub in Enhanced Quantum ImagingMiles PadgettEngineering and Physical Sciences Research Council (EPSRC)EP/M01326X/1P&S - Physics & Astronomy
301688Nano-scale imaging with Hong-Ou-Mandel InterferometryDaniele FaccioEngineering and Physical Sciences Research Council (EPSRC)EP/R030081/1P&S - Physics & Astronomy
305153RAEng Chair Emerging TechnologiesDaniele FaccioRoyal Academy of Engineering (RAE)CiET1819/20P&S - Physics & Astronomy