Gravitational decoherence for mesoscopic systems
Abstract
We extend the recent gravitational decoherence analysis of Pikovski et al. to an individual mesoscopic system with internal state characterized by a coherent superposition of energy eigenstates. We express the Pikovski et al. effect directly in terms of the energy variance, and show that the interferometric visibility is bounded from below. Hence unlike collisional decoherence, the visibility does not approach zero at large times, although for a large system it can become very small.
 Publication:

Physics Letters A
 Pub Date:
 January 2016
 DOI:
 10.1016/j.physleta.2015.10.064
 arXiv:
 arXiv:1506.04414
 Bibcode:
 2016PhLA..380..390A
 Keywords:

 Gravitational decoherence;
 Open quantum systems;
 Quantum foundations;
 Quantum to classical transition;
 Quantum interference;
 Quantum Physics;
 Condensed Matter  Mesoscale and Nanoscale Physics;
 Mathematical Physics
 EPrint:
 Latex, 8 pages. v2 is expanded version that will appear in Phys. Lett. A