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Space QUEST mission proposal: experimentally testing decoherence due to gravity
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Number of Authors: 452018 (English)In: New Journal of Physics, ISSN 1367-2630, E-ISSN 1367-2630, Vol. 20, article id 063016Article in journal (Refereed) Published
Abstract [en]

Models of quantum systems on curved space-times lack sufficient experimental verification. Some speculative theories suggest that quantum correlations, such as entanglement, may exhibit different behavior to purely classical correlations in curved space. By measuring this effect or lack thereof, we can test the hypotheses behind several such models. For instance, as predicted by Ralph et al [5] and Ralph and Pienaar [1], a bipartite entangled system could decohere if each particle traversed through a different gravitational field gradient. We propose to study this effect in a ground to space uplink scenario. We extend the above theoretical predictions of Ralph and coworkers and discuss the scientific consequences of detecting/failing to detect the predicted gravitational decoherence. We present a detailed mission design of the European Space Agency's Space QUEST (Space-Quantum Entanglement Space Test) mission, and study the feasibility of the mission scheme.

Place, publisher, year, edition, pages
2018. Vol. 20, article id 063016
Keywords [en]
gravitational decoherence, quantum communication, entanglement, satellite, relativity, quantum mechanics
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:su:diva-158266DOI: 10.1088/1367-2630/aac58bISI: 000435132100004OAI: oai:DiVA.org:su-158266DiVA, id: diva2:1236634
Available from: 2018-08-03 Created: 2018-08-03 Last updated: 2018-08-03Bibliographically approved

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Bourennane, MohamedBruschi, David Edward
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