Investigating Entropic Dynamics of Multiqubit Cavity QED System

IF 4.4 Q1 OPTICS Advanced quantum technologies Pub Date : 2024-09-06 DOI:10.1002/qute.202400246
Hui-hui Miao
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Abstract

Entropic dynamics of a multiqubit cavity quantum electrodynamics system is simulated and various aspects of entropy are explored. In the modified version of the Tavis–Cummings–Hubbard model, atoms are held in optical cavities through optical tweezers and can jump between different cavities through the tunneling effect. The interaction of atom with the cavity results in different electronic transitions and the creation and annihilation of corresponding types of photon. Electron spin and the Pauli exclusion principle are considered. Formation and break of covalent bond and creation and annihilation of phonon are also introduced into the model. The system is bipartite. The effect of all kinds of interactions on entropy is studied. And the von Neumann entropy of different subsystems is compared. The results show that the entropic dynamics can be controlled by selectively choosing system parameters, and the entropy values of different subsystems satisfy certain inequality relationships.

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多比特腔体 QED 系统的熵动力学研究
模拟了多量子比特腔量子电动力学系统的熵动力学,并探讨了熵的各个方面。在改进版的塔维斯-康明斯-哈伯德模型中,原子通过光镊被固定在光腔中,并可通过隧道效应在不同的光腔之间跳跃。原子与空腔的相互作用导致不同的电子跃迁以及相应类型光子的产生和湮灭。研究考虑了电子自旋和保利排除原理。模型中还引入了共价键的形成和断裂以及声子的产生和湮灭。该系统是双向的。研究了各种相互作用对熵的影响。并比较了不同子系统的冯-诺依曼熵。结果表明,可以通过有选择地选择系统参数来控制熵的动态变化,而且不同子系统的熵值满足一定的不等式关系。
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Front Cover: Laser Beam Induced Charge Collection for Defect Mapping and Spin State Readout in Diamond (Adv. Quantum Technol. 12/2024) Inside Front Cover: Numerical Investigation of a Coupled Micropillar - Waveguide System for Integrated Quantum Photonic Circuits (Adv. Quantum Technol. 12/2024) Back Cover: Purity-Assisted Zero-Noise Extrapolation for Quantum Error Mitigation (Adv. Quantum Technol. 12/2024) Issue Information (Adv. Quantum Technol. 12/2024) Issue Information (Adv. Quantum Technol. 11/2024)
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