Nonadiabatic Holonomic Quantum Computation with Dressed-State Qubits
Nonadiabatic Holonomic Quantum Computation with Dressed-State Qubits
复制标题
使用修饰态量子位的非绝热完整量子计算
DOI：
10.1103/physrevapplied.7.054022
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发表时间：
2017
影响因子：
4.6
通讯作者：
You J. Q.
中科院分区：
文献类型：
--
作者：
Xue Zheng-Yuan;Gu Feng-Lei;Hong Zhuo-Ping;Yang Zi-He;Zhang Dan-Wei;Hu Yong;You J. Q.
实现完整量子计算是一项具有挑战性的任务，因为它需要多级系统之间的复杂相互作用。本文提出了在电路QED中实现基于缀饰态量子比特的非绝热完整量子计算。利用外加微波场并调节其振幅和相位，可以方便地实现任意完整单量子比特门。同时，非平凡的两量子比特门可以在耦合腔的情况下实现，由接地的超导量子干涉器件（SQUID）与可调谐的相互作用，其中的调谐是通过调制穿过SQUID的交流通量来实现的。此外，我们的提案可以直接扩展到二维晶格配置。在本方案中，修饰态只涉及每个transmon量子比特的最低两个能级，并且所利用的有效相互作用都是共振性质的。从而揭示了在超导电路上实现完整量子计算的主要困难。
Implementing holonomic quantum computation is a challenging task as it requires complicated interaction among multilevel systems. Here we propose to implement nonadiabatic holonomic quantum computation based on dressed-state qubits in circuit QED. An arbitrary holonomic single-qubit gate can be conveniently achieved using external microwave fields and tuning their amplitudes and phases. Meanwhile, nontrivial two-qubit gates can be implemented in a coupled-cavities scenario assisted by a grounding superconducting quantum-interference device (SQUID) with tunable interaction, where the tuning is achieved by modulating the ac flux threaded through the SQUID. In addition, our proposal is directly scalable, up to a two-dimensional lattice configuration. In the present scheme, the dressed states involve only the lowest two levels of each transmon qubit, and the effective interactions exploited are all of resonant nature. Therefore, we release the main difficulties for physical implementation of holonomic quantum computation on superconducting circuits.