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arXiv quant-ph/0210197quant-ph
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动力学演化的量子极限

Quantum limits to dynamical evolution

Vittorio Giovannetti, Seth Lloyd, Lorenzo Maccone

摘要:

我们建立了平均能量E和能量扩展DE的初始状态从其初始配置移动预定量所需的最小时间。希尔伯特空间中的距离由初始状态和最终状态之间的保真度来估计。在这种情况下,我们还表明,纠缠是必要的,以达到最终的进化速度时,能源分配在所有子系统。

英文摘要:

We establish the minimum time it takes for an initial state of mean energy E and energy spread DE to move from its initial configuration by a predetermined amount. Distances in Hilbert space are estimated by the fidelity between the initial and final state. In this context, we also show that entanglement is necessary to achieve the ultimate evolution speed when the energy resources are distributed among all subsystems.

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