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arXiv 2307.09482quant-phcond-mat.mes-hall
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边界驱动双自旋链的精确结果及资源高效的远程纠缠稳定化

Exact Results for a Boundary-Driven Double Spin Chain and Resource-Efficient Remote Entanglement Stabilization

Andrew Lingenfelter, Mingxing Yao, Andrew Pocklington, Yu-Xin Wang, Abdullah Irfan, Wolfgang Pfaff, Aashish A. Clerk

AI总结:

本研究推导了边界驱动双XX自旋链稳态的精确解,发现其可在无压缩光条件下稳定远程多量子比特纠缠,还揭示了单链中非平衡稳态的空穴配对等关联效应,可在电路QED等平台实现。

摘要:

我们推导了一种装置稳态的精确解,该装置包含两条XX耦合的N量子比特自旋链(耦合可能非均匀),受到边界拉比驱动,且存在由波导(双向或单向)产生的共同边界损耗。在宽参数范围内,该系统具有纯纠缠稳态,提供了一种无需使用压缩光即可稳定远程多量子比特纠缠的方法。我们的解还为映射到相互作用费米子模型的单边界驱动耗散XX自旋链提供了见解。该非平衡稳态展现出令人惊讶的关联效应,包括由动态约束隧穿引发的空穴激发涌现配对。我们的系统可在多种实验平台中实现,包括电路QED。

英文摘要:

We derive an exact solution for the steady state of a setup where two $XX$-coupled $N$-qubit spin chains (with possibly non-uniform couplings) are subject to boundary Rabi drives, and common boundary loss generated by a waveguide (either bidirectional or unidirectional). For a wide range of parameters, this system has a pure entangled steady state, providing a means for stabilizing remote multi-qubit entanglement without the use of squeezed light. Our solution also provides insights into a single boundary-driven dissipative $XX$ spin chain that maps to an interacting fermionic model. The non-equilibrium steady state exhibits surprising correlation effects, including an emergent pairing of hole excitations that arises from dynamically constrained hopping. Our system could be implemented in a number of experimental platforms, including circuit QED.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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