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Chinese Physics Letters

Physical Realization of Quantum C-Not Gate

霍建立, Shun-Jin Wang, 陶军

Published Jan 1, 2008• 0 citations
OpenAlex

Abstract

我们调查海森堡旋转簇,二个粒子由一个时间依赖者磁场控制了。系统被调节三步的时间依赖者磁场的振幅,频率,和相互作用时间控制。然后,我们解决二粒子的系统的时间依赖者 Schrodinger 方程,并且获得时间进化操作符。由 three-timestep 相互作用,波浪功能从起始的状态演变到最后的状态,和全部的进化操作员能被表示为三个进化操作员的一个产品。由调整物理参数,关键 two-qubit 逻辑门, C 不门,能身体上被认识到。

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我们调查一有五个粒子的营养的海森堡旋转簇由一个时间依赖者磁场控制了的一种著名软件压缩工具。与代数学的动态方法,我们获得准确分析答案到时间依赖者 Schrodinger 方程。基于分析,系统能被用作通用单个讥讽,这被显示出它磁场的力量和频率控制的逻辑门,和六个专辑挑选讥讽它逻辑门能身体上被认识到。我们也讨论讥讽的 anti-decoherence 性质它和它的逻辑门簇源于联合效果的粒子并且一起。

Chinese Physics Letters•Jan 1, 2006•0 citations
我们调查海森堡旋转簇,二个粒子由一个时间依赖者磁场控制了。系统被调节三步的时间依赖者磁场的振幅,频率,和相互作用时间控制。然后,我们解决二粒子的系统的时间依赖者 Schrodinger 方程,并且获得时间进化操作符。由 three-timestep 相互作用,波浪功能从起始的状态演变到最后的状态,和全部的进化操作员能被表示为三个进化操作员的一个产品。由调整物理参数,关键 two-qubit 逻辑门, C 不门,能身体上被认识到。
We investigate a Heisenberg spin cluster with two particles controlled by a time-dependent magnetic field. The system is controlled by tuning the amplitude, frequency, and interaction time of the three-step time-dependent magnetic field. Then we solve the time-dependent Schrödinger equation of the two-particle system, and obtain the time evolution operator. By the three-timestep interaction, the wavefunction evolves from the initial state to the final state, and the total evolution operator can be expressed as a product of the three evolution operators. By adjusting the physical parameters, the key two-qubit logic gate, the C-Not gate, can be realized physically.
在这份报纸, three-quhit 的合成和实现交换门被讨论。three-quhit 交换门能被分解成 2 two-qubit 的产品交换门,并且它能由 6 扇 CNOT 门被认识到。尽管结果很简单,研究说明了那,为 multi-qubit 门的矩阵分解的当前的方法不能得到那。然后 three-qubit 的实现与 Ising 在三个旋转系统交换门相互作用被调查,控制脉搏和飘移过程的顺序被给实现门。它需要 23 控制脉搏和 12 个飘移过程。因为相互作用不能随意断断续续地被交换, three-qubit 的实现也在特定的量系统交换门不能简单地下来到 2 two-qubit 交换门。
我们调查一有五个粒子的营养的海森堡旋转簇由一个时间依赖者磁场控制了的一种著名软件压缩工具。与代数学的动态方法,我们获得准确分析答案到时间依赖者 Schrodinger 方程。基于分析,系统能被用作通用单个讥讽,这被显示出它磁场的力量和频率控制的逻辑门,和六个专辑挑选讥讽它逻辑门能身体上被认识到。我们也讨论讥讽的 anti-decoherence 性质它和它的逻辑门簇源于联合效果的粒子并且一起。