Harnessing quantum entanglement and heat current of a non-equilibrium spin system at high temperatures

被引:0
|
作者
B. Mojaveri [1 ]
Z. Ahmadi [1 ]
机构
[1] Azarbaijan Shahid Madani University,Department of Physics
关键词
Open quantum systems; Non-equilibrium thermodynamics; Entanglement sudden death and rebirth; Entanglement protection;
D O I
10.1038/s41598-025-96717-w
中图分类号
学科分类号
摘要
The challenge of harnessing entanglement during the non-equilibrium dynamics of open quantum systems, especially at high temperatures, is highly prominent within recent scientific researches. Due to the ongoing trend of miniaturization of quantum devices that exploit quantum correlations, proposing novel schemes to overcome this challenge is itself a crucial task within current quantum technological research. We contribute to this research by proposing a new scheme to control entanglement dynamics of a non-equilibrium two-qubit Heisenberg XXZ spin chain model in an external magnetic field. The design of the scheme is based on a coupling asymmetry in the model induced by the asymmetrical connection of qubits to two independent thermal reservoirs. While in the absence of the coupling asymmetry, non-equilibrium effects generally suppress the dynamical generation of thermal entanglement, making entanglement production impossible at high mean temperatures of reservoirs, it is shown that this asymmetry in the coupling potentially enables us to generate a maximal non-equilibrium entanglement even in the high mean temperature regime. We show that the coupling asymmetry can also lead to a complete protection of the maximum initial entanglement between the qubits at high mean temperatures of the reservoirs thanks to the non-equilibrium conditions. Depending on the initial state of the two qubits, this can be achieved either by accessing a coherence-free subspace or by fully reviving the initial qubit-qubit entanglement. Furthermore, we investigate the quantum heat transport of the chain, and find that by turning on the asymmetry in the qubit-reservoir coupling, although the chain loses its initial thermal rectification property over time, it regains this property and maintain it until the non-equilibrium steady state is reached. Our results show that, at higher temperature gradients, the chain leverages the steady-state entanglement to completely block the heat released from the hot reservoir. Our findings can be significant for heat management in quantum computing devices such as solid-state thermal circuits.
引用
收藏
相关论文
共 50 条
  • [1] Non-Equilibrium Quantum Entanglement in Biological Systems
    Li Hong-Rong
    Zhang Pei
    Gao Hong
    Bi Wen-Ting
    Alamri, M. D.
    Li Fu-Li
    CHINESE PHYSICS LETTERS, 2012, 29 (04)
  • [2] Non-equilibrium thermal entanglement for a three spin chain
    Pumulo, N.
    Sinayskiy, I.
    Petruccione, F.
    PHYSICS LETTERS A, 2011, 375 (36) : 3157 - 3166
  • [3] Non-equilibrium quantum heat machines
    Alicki, Robert
    Gelbwaser-Klimovsky, David
    NEW JOURNAL OF PHYSICS, 2015, 17
  • [4] Entanglement and thermodynamics in non-equilibrium isolated quantum systems
    Calabrese, Pasquale
    PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS, 2018, 504 : 31 - 44
  • [5] Entanglement entropies of non-equilibrium finite-spin systems
    Nakagawa, Koichi
    PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS, 2015, 2015 (02):
  • [6] Theory of Non-Equilibrium Heat Transport in Anharmonic Multiprobe Systems at High Temperatures
    Esfarjani, Keivan
    ENTROPY, 2021, 23 (12)
  • [7] Stochastic approach to non-equilibrium quantum spin systems
    De Nicola, S.
    Doyon, B.
    Bhaseen, M. J.
    JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL, 2019, 52 (05)
  • [8] Stochastic non-equilibrium systems and quantum spin models
    Stinchcombe, RB
    PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS, 1996, 224 (1-2) : 248 - 253
  • [9] Non-equilibrium quantum phase transition via entanglement decoherence dynamics
    Lin, Yu-Chen
    Yang, Pei-Yun
    Zhang, Wei-Min
    SCIENTIFIC REPORTS, 2016, 6
  • [10] Non-equilibrium quantum phase transition via entanglement decoherence dynamics
    Yu-Chen Lin
    Pei-Yun Yang
    Wei-Min Zhang
    Scientific Reports, 6