Dissipation-boosted entanglement in coupled harmonic oscillators

Details Dissipation-boosted entanglement in coupled harmonic oscillators Dissipation-boosted entanglement in coupled harmonic oscillators

2011-11-07

arxiv.org/abs/1111.1709v1

Physics

Quantum Physics

4 pages

Scientific paper

We investigate the effect of dissipation on indirectly coupled harmonic oscillators and show that the degree of entanglement of initially separable states, caused by squeezing, is enhanced by dissipation. This counterintuitive enhancement is generic, since it arises generally when squeezing is present, and squeezing is always present when the rotating-wave approximation is not made. The effect vanishes if all the oscillators are coupled to identical heat baths, suggesting that "heat flow" may be a necessary condition for dissipation-boosted quantum correlations in coupled harmonic oscillators.

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