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Journal Articles New Journal of Physics Year : 2018

Space QUEST mission proposal: Experimentally testing decoherence due to gravity

Siddarth Koduru Joshi
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Jacques Pienaar
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Will Mccutcheon
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Dirk Giggenbach
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Vadim Makarov
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Ivette Fuentes
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Thomas Scheidl
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Mohamed Bourennane
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David Edward Bruschi
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Adán Cabello
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Jose Capmany
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José A. Carrasco
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Alberto Carrasco-Casado
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Eleni Diamanti
Miloslav Duusek
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Dominique Elser
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Robert H. Hadfield
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Michael A. Krainak
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Hoi-Kwong Lo
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Gerard Milburn
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Momtchil Peev
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Andreas Poppe
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Renato Renner
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Johannes Skaar
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Nikolaos Solomos
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Mario Stipčević
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Juan P. Torres
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Paolo Villoresi
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Gregor Weihs
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Harald Weinfurter
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Marek Żukowski
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Abstract

Models of quantum systems on curved space-times lack sufficient experimental verification. Some speculative theories suggest that quantum properties, such as entanglement, may exhibit entirely different behavior to purely classical systems. By measuring this effect or lack thereof, we can test the hypotheses behind several such models. For instance, as predicted by Ralph and coworkers [T C Ralph, G J Milburn, and T Downes, Phys. Rev. A, 79(2):22121, 2009, T C Ralph and J Pienaar, New Journal of Physics, 16(8):85008, 2014], 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 (ESA) Space QUEST (Space - Quantum Entanglement Space Test) mission, and study the feasibility of the mission schema.

Dates and versions

hal-01671942 , version 1 (22-12-2017)

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Siddarth Koduru Joshi, Jacques Pienaar, Timothy C. Ralph, Luigi Cacciapuoti, Will Mccutcheon, et al.. Space QUEST mission proposal: Experimentally testing decoherence due to gravity. New Journal of Physics, 2018, 20, ⟨10.1088/1367-2630/aac58b⟩. ⟨hal-01671942⟩
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