Quantum interferometric visibility as a witness of general relativistic proper time

Zych, Magdalena, Costa, Fabio, Pikovski, Igor and Brukner, Caslav (2011) Quantum interferometric visibility as a witness of general relativistic proper time. Nature Communications, 2 1: . doi:10.1038/ncomms1498


Author Zych, Magdalena
Costa, Fabio
Pikovski, Igor
Brukner, Caslav
Title Quantum interferometric visibility as a witness of general relativistic proper time
Journal name Nature Communications   Check publisher's open access policy
ISSN 2041-1723
Publication date 2011-10-18
Year available 2011
Sub-type Article (original research)
DOI 10.1038/ncomms1498
Open Access Status DOI
Volume 2
Issue 1
Total pages 7
Place of publication London, United Kingdom
Publisher Nature Publishing Group
Language eng
Abstract Current attempts to probe general relativistic effects in quantum mechanics focus on precision measurements of phase shifts in matterĝ€" wave interferometry. Yet, phase shifts can always be explained as arising because of an Aharonovĝ€"Bohm effect, where a particle in a flat spaceĝ€"time is subject to an effective potential. Here we propose a quantum effect that cannot be explained without the general relativistic notion of proper time. We consider interference of a 'clock'ĝ€"a particle with evolving internal degrees of freedomĝ€"that will not only display a phase shift, but also reduce the visibility of the interference pattern. According to general relativity, proper time flows at different rates in different regions of spaceĝ€"time. Therefore, because of quantum complementarity, the visibility will drop to the extent to which the path information becomes available from reading out the proper time from the 'clock'. Such a gravitationally induced decoherence would provide the first test of the genuine general relativistic notion of proper time in quantum mechanics.
Keyword Multidisciplinary Sciences
Science & Technology - Other Topics
MULTIDISCIPLINARY SCIENCES
Q-Index Code C1
Q-Index Status Provisional Code
Grant ID W1210
248095
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Mathematics and Physics
 
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 51 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 52 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Fri, 12 Feb 2016, 21:30:45 EST by System User on behalf of Learning and Research Services (UQ Library)