Thermal entanglement of bosonic modes
arXiv:quant-ph/0501146
Abstract
We study the change of entanglement under general linear transformation of modes in a bosonic system and determine the conditions under which entanglement can be generated under such transformation. As an example we consider the thermal entanglement between the vibrational modes of two coupled oscillators and determine the temperature above which quantum correlations are destroyed by thermal fluctuations.
4 pages, RevTex, 1 figure, typos fixed