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arXiv 0908.4181quant-ph
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通过频繁量子测量实现量子位热力学的非马尔可夫控制

Non-Markovian control of qubit thermodynamics by frequent quantum measurements

Guy Bensky, D. D. Bhaktavatsala Rao, Goren Gordon, David Gelbwaser-Klimovsky, Noam Erez, Gershon Kurizki

摘要:

我们探讨了频繁的,脉冲量子非破坏测量的能量的二能级系统(TLS),别名量子比特,在接触热浴的影响。由此产生的熵和温度的系统和浴被发现是完全由测量速率,并不期望由标准的物理规则,持有马尔可夫浴。这些异常允许非常快速地控制量子位的加热、冷却和状态净化(熵减少),比它们的热平衡时间快得多。

英文摘要:

We explore the effects of frequent, impulsive quantum nondemolition measurements of the energy of two-level systems (TLS), alias qubits, in contact with a thermal bath. The resulting entropy and temperature of both the system and the bath are found to be completely determined by the measurement rate, and unrelated to what is expected by standard thermodynamical rules that hold for Markovian baths. These anomalies allow for very fast control of heating, cooling and state-purification (entropy reduction) of qubits, much sooner than their thermal equilibration time.

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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