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Chinese Physics Letters

Scheme for Generating Cluster States with Charge Qubits in a Cavity

宋克慧

Published Jan 1, 2009• 0 citations
OpenAlex

Abstract

基于联合到一个单个模式的微波洞的超导的费用 qubits (SCCQ ) ，我们为产生费用簇状态建议一个计划。为所有 SCCQ，控制的门电压都在他们的退化点，量信息被编码为充电的二个逻辑状态基础。multi-qubit 簇状态的产生能在一双近邻居的 qubits 上一步一步地被完成。就有效长戒指的联合而言，我们提供一个有效方法给一个高度纠缠的簇状态，联合的 qubit-qubit 被洞模式在调停产生的一步舞。我们的量操作对由经由系统的期刊进化移开洞模式的影响的洞模式的起始的状态感觉迟钝。因此，我们的操作可能对来自洞的 decoherence。

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基于联合到一个单个模式的微波洞的超导的费用 qubits (SCCQ ) ，我们为产生费用簇状态建议一个计划。为所有 SCCQ，控制的门电压都在他们的退化点，量信息被编码为充电的二个逻辑状态基础。multi-qubit 簇状态的产生能在一双近邻居的 qubits 上一步一步地被完成。就有效长戒指的联合而言，我们提供一个有效方法给一个高度纠缠的簇状态，联合的 qubit-qubit 被洞模式在调停产生的一步舞。我们的量操作对由经由系统的期刊进化移开洞模式的影响的洞模式的起始的状态感觉迟钝。因此，我们的操作可能对来自洞的 decoherence。
Based on superconducting charge qubits (SCCQs) coupled to a single-mode microwave cavity, we propose a scheme for generating charge cluster states. For all SCCQs, the controlled gate voltages are all in their degeneracy points, the quantum information is encoded in two logic states of charge basis. The generation of the multi-qubit cluster state can be achieved step by step on a pair of nearest-neighbor qubits. Considering effective long-rang coupling, we provide an efficient way to one-step generating of a highly entangled cluster state, in which the qubit-qubit coupling is mediated by the cavity mode. Our quantum operations are insensitive to the initial state of the cavity mode by removing the influence of the cavity mode via the periodical evolution of the system. Thus, our operation may be against the decoherence from the cavity.