arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1802.04299quant-phcond-mat.mes-hallcond-mat.supr-con
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利用超导量子位-量子阱电路实现高效量子门

Realization of efficient quantum gates with a superconducting qubit-qutrit circuit

T. Bækkegaard, L. B. Kristensen, N. J. S. Loft, C. K. Andersen, D. Petrosyan, N. T. Zinner

摘要:

建造量子计算机是一项艰巨的挑战,因为它需要良好的控制,但也需要与环境良好的隔离,以最大限度地减少退相干。因此,重要的是使用尽可能少的操作来有效地实现量子门,以减少所需的控制和操作时间的量,从而提高量子态相干性。在这里,我们提出了一个超导电路,用于实现一个可调系统组成的qutrit耦合到两个量子位。该系统可以有效地完成各种量子信息任务,包括产生两个量子比特的纠缠和条件三量子比特量子门,如Toffoli和Fredkin门。此外,该系统实现了一个条件几何门,可用于完整(非绝热)量子计算。所提出的电路的效率,鲁棒性和通用性使其成为一个有希望的候选者,作为一个更大的网络,能够执行涉及的量子计算任务的构建块。

英文摘要:

Building a quantum computer is a daunting challenge since it requires good control but also good isolation from the environment to minimize decoherence. It is therefore important to realize quantum gates efficiently, using as few operations as possible, to reduce the amount of required control and operation time and thus improve the quantum state coherence. Here we propose a superconducting circuit for implementing a tunable system consisting of a qutrit coupled to two qubits. This system can efficiently accomplish various quantum information tasks, including generation of entanglement of the two qubits and conditional three-qubit quantum gates, such as the Toffoli and Fredkin gates. Furthermore, the system realizes a conditional geometric gate which may be used for holonomic (non-adiabatic) quantum computing. The efficiency, robustness and universality of the presented circuit makes it a promising candidate to serve as a building block for larger networks capable of performing involved quantum computational tasks.

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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