1203.1455 (Shi-Biao Zheng)

Macroscopic displaced thermal field as the entanglement catalyst    [PDF]

Shi-Biao Zheng

We show that entanglement of multiple atoms can arise via resonant interaction with a displaced thermal field with a macroscopic photon-number. The cavity field acts as the catalyst, which is disentangled with the atomic system after the operation. Remarkably, the entanglement speed does not decrease as the average photon-number of the mixed thermal state increases. The atoms may evolve to a highly entangled state even when the photon-number of the cavity mode approaches infinity.

View original: http://arxiv.org/abs/1203.1455