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arXiv 1202.6315quant-ph
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碰撞模型中不可分量子比特通道的模拟

Simulation of indivisible qubit channels in collision models

Tomas Rybar, Sergey N. Filippov, Mario Ziman, Vladimir Buzek

摘要:

一个量子系统和它的环境(由一组量子物体组成)之间的受控碰撞序列自然地(以任意精度)模拟了所考虑系统的任何马尔可夫量子动力学。本文提出并研究了用碰撞模型模拟{ \it arbitrary}量子信道的问题。我们表明,一个相关的环境是能够模拟{ \it非马尔可夫}的演变导致任何不可分割的量子比特通道。特别是,我们推导出相应的主方程产生一个连续的时间非马尔可夫动力学实现通用非门的例子是最非马尔可夫量子信道。

英文摘要:

A sequence of controlled collisions between a quantum system and its environment (composed of a set of quantum objects) naturally simulates (with arbitrary precision) any Markovian quantum dynamics of the system under consideration. In this paper we propose and study the problem of simulation of an {\it arbitrary} quantum channel via collision models. We show that a correlated environment is capable to simulate {\it non-Markovian} evolutions leading to any indivisible qubit channel. In particular, we derive the corresponding master equation generating a continuous time non-Markovian dynamics implementing the universal NOT gate being an example of the most non-Markovian quantum channels.

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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