The transfer of Bell nonlocality between two and three-qubit dissipative systems with counter-rotating-wave terms

• URL: http://arxiv.org/abs/2411.13905v1
• Date: Thu, 21 Nov 2024 07:34:48 GMT
• Title: The transfer of Bell nonlocality between two and three-qubit dissipative systems with counter-rotating-wave terms
• Authors: Zi-Yu Xiong, Yong-Jun Xiao, Ye-Qi Zhang, Qi-Liang He,
• Abstract summary: We investigate the effect of counter-rotating-wave terms on entanglement for three qubits coupled with a Lorentz-broadened cavity mode at zero temperature. Our findings are as follows: (i) the counter-rotating wave terms significantly increase the rate of decoherence in the three-qubit system; (ii) a consistent transfer of Bell nonlocality between the three-qubit state and its subsystem is observed when the interaction between the qubits and the bath is asymmetrical; and (iv) these terms do not significantly generate three-party correlations in zero-excitation cases.
• Score: 0.13124513975412253
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• Abstract: We investigate the effect of counter-rotating-wave terms on bell nonlocality (BN) and entanglement for three qubits coupled with a Lorentz-broadened cavity mode at zero temperature for strong and ultrastrong coupling regimes by employing exact numerical hierarchical equations of motion approach (HEOM). Our findings are as follows: (i) the counter-rotating wave terms significantly increase the rate of decoherence in the three-qubit system; (ii) a consistent transfer of Bell nonlocality between the three-qubit state and its subsystem is observed when the interaction between the qubits and the bath is asymmetrical, which provides effective numerical evidence for the monogamy and complementarity of multipartite nonlocality; (iii) the counter-rotating wave terms can enhance genuine tripartite nonlocality in the qubit system; and (iv) these terms do not significantly generate three-party correlations in zero-excitation cases, which differs from previous studies involving two qubits.

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