论文标题
通过量子状态准备算法模拟嘈杂的量子通道
Simulating noisy quantum channels via quantum state preparation algorithms
论文作者
论文摘要
在裁判中。 [物理。 Rev. A 96，062303（2017）]和[Sci。中国物理。机械。 astron。 61，70311（2018）]，作者报告了一种在基于电路的量子计算机中模拟通用量子通道（QC）中模拟的算法。但是，其算法的应用受到限制，因为它需要解决复杂的非线性方程式系统的解决方案，以便获得用于模拟的量子电路。在此问题的推动下，在本文中，我们通过量子状态准备算法确定并讨论了一种在任何$ d $级别的量子系统上实施QCS模拟的简单方法，这些算法最近在量子信息科学文献中引起了很多关注。我们举例说明了将其应用于最著名的QC QC，某些Qudit QC的多功能性，并模拟Lorentz转换对自旋状态的影响。我们还考虑将协议应用于初始混合状态。使用IBM的量子计算机证明了大多数给定的应用程序示例。
In Refs. [Phys. Rev. A 96, 062303 (2017)] and [Sci. China Phys. Mech. Astron. 61, 70311 (2018)], the authors reported an algorithm to simulate, in a circuit-based quantum computer, a general quantum channel (QC). However, the application of their algorithm is limited because it entails the solution of intricate non-linear systems of equations in order to obtain the quantum circuit to be implemented for the simulation. Motivated by this issue, in this article we identify and discuss a simple way to implement the simulation of QCs on any $d$-level quantum system through quantum state preparation algorithms, that have received much attention in the quantum information science literature lately. We exemplify the versatility of our protocol applying it to most well known qubit QCs, to some qudit QCs, and to simulate the effect of Lorentz transformations on spin states. We also regard the application of our protocol for initial mixed states. Most of the given application examples are demonstrated using IBM's quantum computers.
