arXiv:0705.3003 [quant-ph]AbstractReferencesReviewsResources
Negative Energy in Superposition and Entangled States
Published 2007-05-21Version 1
We examine the maximum negative energy density which can be attained in various quantum states of a massless scalar field. We consider states in which either one or two modes are excited, and show that the energy density can be given in terms of a small number of parameters. We calculate these parameters for several examples of superposition states for one mode, and entangled states for two modes, and find the maximum magnitude of the negative energy density in these states. We consider several states which have been, or potentially will be, generated in quantum optics experiments.
Comments: 21 pages, 5 figures
Journal: Phys.Rev.D77:045018,2008
Keywords: entangled states, maximum negative energy density, quantum optics experiments, quantum states, massless scalar field
Tags: journal article
Related articles: Most relevant | Search more
arXiv:0902.1914 [quant-ph] (Published 2009-02-11)
Local transformations of superpositions of entangled states
Semi-quantum secret sharing using entangled states
Classification of the Entangled states L\times N\times N