Entanglement decoherence of coupled superconductor qubits entangled states in non-Markovian environment

Abstract

Abstract:

The evolution of entangled decoherence is investigated detail in non-Markovian environment of coupling superconducting qubits through using concurrence function. The results show that, for coupling superconducting qubit under different entangled initial states, because of the role of memory feedback due to environmental effect, the entanglement of coupling superconducting qubits under a thermal bath will always be monotonically tends to zero. Further results also showed that, the sudden death of entanglement will soon be found in non-Markovian process, the stronger the dissipation, the faster the death of entanglement. But in Markovian process, it tends to death of entanglement slowly.

Key words: entanglement, coupled qubits, non-Markovian process, concurrence

CLC Number:

O431.2

JI Ying-Hua, Xu Lin . Entanglement decoherence of coupled superconductor qubits entangled states in non-Markovian environment[J]. J4, 2011, 28(1): 58-64.

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