AI 中文总结
该研究提出纠缠姆佩巴效应,推导其反转通用判据,以LOCC可达偏序反转作判据,通过模型和囚禁离子协议证明初始态选择可缩短高纠缠制备时间。
AI 中文摘要
快速且可靠地产生纠缠对量子信息处理、通信和计量学至关重要。耗散制备颇具吸引力,因为经设计的热库能稳健地驱动系统趋近纠缠目标态,但弛豫过程会产生可观的时间成本。本文提出纠缠姆佩巴效应,即初始时纠缠度较低的态,在相同开放系统动力学过程中会超越纠缠度更高的态,该效应将初始态工程化为无需改变耗散协议即可实现更快制备的途径。我们从弛豫谱推导出反转的通用判据,即便在纠缠度非单调演化时也适用。确定性局域操作与经典通信(LOCC)可达偏序的反转提供了与测量无关的纠缠序反转判据。可精确求解的模型表明,初始态选择可大幅缩短达到高纠缠度所需的时间。我们进一步提出与实验相关的囚禁离子协议,该协议可实现纠缠姆佩巴效应。
英文摘要
Generating entanglement rapidly and reliably is essential for quantum information processing, communication, and metrology. Dissipative preparation is attractive because engineered reservoirs robustly drive a system toward an entangled target, yet relaxation can carry a substantial time cost. Here we formulate the entanglement Mpemba effect, whereby an initially less entangled state overtakes a more entangled state under the same open-system dynamics. This effect turns initial-state engineering into a route for faster preparation without altering the dissipative protocol. We derive a general criterion for the reversal from the relaxation spectrum, applicable even when entanglement evolves nonmonotonically. A reversal of deterministic local operations and classical communication (LOCC)-reachability preorder provides a measure-independent certificate of reversed entanglement order. Exactly solvable models show that initial-state selection can substantially shorten the time required to reach high entanglement. We further propose an experimentally relevant trapped-ion protocol that can realize the entanglement Mpemba effect.
Comments6 pages, 3 figures