Skip to content

Space QUEST mission proposal: experimentally testing decoherence due to gravity

Research output: Contribution to journalArticle

  • Siddarth Koduru Joshi
  • Jacques Pienaar
  • Timothy C Ralph
  • Luigi Cacciapuoti
  • Will Mccutcheon
  • John G Rarity
  • Dirk Giggenbach
  • Jin Gyu Lim
  • Vadim Makarov
  • Ivette Fuentes
  • Thomas Scheidl
  • Erik Beckert
  • Mohamed Bourennane
  • David Edward Edward Bruschi
  • Adan Cabello
  • Jose Capmany
  • Alberto Carrasco-casado
  • Eleni Diamanti
  • Miloslav Dusek
  • Dominique Elser
  • Angelo Gulinatti
  • Robert H Hadfield
  • Thomas Jennewein
  • Rainer Kaltenbaek
  • Michael A Krainak
  • Hoi-kwong Lo
  • Christoph Marquardt
  • Gerard J Milburn
  • Momtchil Peev
  • Andreas Poppe
  • Valerio Pruneri
  • Renato Renner
  • Christophe Salomon
  • Johannes Skaar
  • Nikolaos Solomos
  • Mario Stipčević
  • Juan Perez Torres
  • Morio Toyoshima
  • Paolo Villoresi
  • Ian Walmsley
  • Gregor Weihs
  • Harald Weinfurter
  • Anton Zeilinger
  • Marek Zukowski
  • Rupert Ursin
Original languageEnglish
Article number063016
Number of pages22
JournalNew Journal of Physics
Early online date12 Jun 2018
DateAccepted/In press - 17 May 2018
DateE-pub ahead of print - 12 Jun 2018
DatePublished (current) - Jun 2018


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.

    Structured keywords

  • QETLabs

Download statistics

No data available



  • Full-text PDF (final published version)

    Rights statement: This is the final published version of the article (version of record). It first appeared online via IOP at . Please refer to any applicable terms of use of the publisher.

    Final published version, 1.58 MB, PDF document

    Licence: CC BY


View research connections

Related faculties, schools or groups