Distant entanglement protected through artificially increased local temperature

Details Distant entanglement protected through artificially increased local temperature Distant entanglement protected through artificially increased local temperature

2011-01-13

arxiv.org/abs/1101.2688v1

New J. Phys. 13 013010 (2011)

Physics

Quantum Physics

Scientific paper

10.1088/1367-2630/13/1/013010

In composed quantum systems, the presence of local dissipative channels causes loss of coherence and entanglement at a rate that grows with the temperature of the reservoirs. However, here we show that if temperature is artificially added to the system, entanglement decay can be significantly slowed down or even suppressed conditioned on suitable local monitoring of the reservoirs. We propose a scheme to implement the joint reservoir monitoring applicable in different experimental setups like trapped ions, circuit and cavity QED or quantum dots coupled to nanowires and we analyze its general robustness against detection inefficiencies and non-zero temperature of the natural reservoir.

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