Assessments of macroscopicity for quantum optical states

OPTICS COMMUNICATIONS

卷:337

Article

Laghaout, Amine¹  Neergaard-Nielsen, Jonas S.¹  Andersen, Ulrik L.¹ 

[1] Tech Univ Denmark, Dept Phys, DK-2800 Lyngby, Denmark

关键词: Macroscopicity;    Distinguishability;    Measure;   

DOI  :  10.1016/j.optcom.2014.07.046

来源: Elsevier

【 摘 要 】

With the slow but constant progress in the coherent control of quantum systems, it is now possible to create large quantum superpositions. There has therefore been an increased interest in quantifying any claims of macroscopicity. We attempt here to motivate three criteria which we believe should enter in the assessment of macroscopic quantumness: The number of quantum fluctuation photons, the purity of the states, and the ease with which the branches making up the state can be distinguished. (C) 2014 Elsevier B.V. All rights reserved

【 授权许可】

Free