论文标题
量子门的十碳保护实现
Decoherences-protected implementation of quantum gates
论文作者
论文摘要
我们提出了一个基于可实现的相互作用的通用量子门的方案，可以通过动态解码方法保护门，以防止破坏折叠，而无需编码。通过正确设计系统的发展，所需的系统相互作用与形成动力学脱钩脉冲的元素的通勤。因此，可以通过反复施加脉冲来消除破裂的效果，而不会明显影响受所需系统相互作用的系统发展，从而给出了脉冲之间足够的时间间隔的所需系统相互作用。此外，由于形成脉冲的元素与所需系统相互作用的元素之间的换向，我们的方案对不同类型的破坏性具有抵抗力，因此不限于特定的破坏。我们的方案在这样的情况下，由于对系统参数的不完善控制，通过动态耦合脉冲的作用，无法实现所需的系统相互作用。
We present a scheme to implement a universal set of quantum gates based on achievable interactions, and the gates can be protected against decoherences through dynamical-decoupling approach without encoding. By properly designing system evolutions, the desired system interactions commute with the elements forming dynamical decoupling pulses. Thus, the effect of decoherences can be eliminated by repeatedly applying the pulses, without noticeably affecting the system evolutions governed by the desired system interactions given small enough time interval between pulses. Moreover, due to the commutation between the elements forming the pulses and the desired system interactions, our scheme is resistant to different types of decoherences, and so not limited to specific decoherences. Our scheme also works well in the case that the desired system interactions cannot be achieved ideally due to imperfect control of system parameters, through the action of dynamical-decoupling pulses.
