Decoherence of two qubits in a non-Markovian squeezed reservoir

Details Decoherence of two qubits in a non-Markovian squeezed reservoir Decoherence of two qubits in a non-Markovian squeezed reservoir

2008-07-10

arxiv.org/abs/0807.1572v3

Physics

Quantum Physics

7pages, 11figures

Scientific paper

The decoherence of two initially entangled qubits in a squeezed vacuum cavity has been investigated exactly. The results show that, first, in principle, the disentanglement time decreases with the increasing of squeeze parameter r, due to the augmenting of average photon number of every mode in squeezed vacuum cavity. Second, there are entanglement revivals after complete disentanglement for the case of even parity initial Bell state, while there are entanglement decrease and revival before complete disentanglement for the case of odd parity initial Bell state. The results are quite different from that of the case for qubits in a vacuum cavity.

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