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Thermal entanglement in superconducting quantum-interference-device qubits coupled to cavity field

Hai-Zhong Pan·Le-Man Kuang
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Abstract

In this paper, we investigate thermal entanglement in a superconducting-quantum-interference-device qubit coupled to a cavity field. We show that the entanglement can be manipulated by varying temperature and an effective controlling parameter $B$ which depends on the external field and characteristic parameters of the system. We find that there exists a critical value of the controlling parameter $B_c$. Under a fixed temperature, increasing $B$ can increase entanglement in the regime of $B B_c$.

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Hai-Zhong Pan, Le-Man Kuang. 2004-02-15. Thermal entanglement in superconducting quantum-interference-device qubits coupled to cavity field. https://doi.org/10.1088/0256-307x%2F21%2F3%2F002

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