Implementation of quantum partial search with superconducting quantum interference device qudits in cavity QED

doi:10.1088/1674-1056/22/11/110305

中国物理B ›› 2013, Vol. 22 ›› Issue (11): 110305-110305.doi: 10.1088/1674-1056/22/11/110305

Implementation of quantum partial search with superconducting quantum interference device qudits in cavity QED

李虹轶, 吴春旺, 陈玉波, 林源根, 陈平形, 李承祖

College of Science, National University of Defense Technology, Changsha 410073, China

收稿日期:2013-06-05 修回日期:2013-08-08 出版日期:2013-09-28 发布日期:2013-09-28
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 10774192).

Implementation of quantum partial search with superconducting quantum interference device qudits in cavity QED

Li Hong-Yi (李虹轶), Wu Chun-Wang (吴春旺), Chen Yu-Bo (陈玉波), Lin Yuan-Gen (林源根), Chen Ping-Xing (陈平形), Li Cheng-Zu (李承祖)

College of Science, National University of Defense Technology, Changsha 410073, China

Received:2013-06-05 Revised:2013-08-08 Online:2013-09-28 Published:2013-09-28
Contact: Li Hong-Yi E-mail:hongyili@nudt.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 10774192).

摘要/Abstract

摘要： We present a method to implement the quantum partial search of the database separated into any number of blocks with qudits, D-level quantum systems. Compared with the partial search using qubits, our method needs fewer iteration steps and uses the carriers of the information more economically. To illustrate how to realize the idea with concrete physical systems, we propose a scheme to carry out a twelve-dimensional partial search of the database partitioned into three blocks with superconducting quantum interference devices (SQUIDs) in cavity QED. Through the appropriate modulation of the amplitudes of the microwave pulses, the scheme can overcome the non-identity of the cavity–SQUID coupling strengths due to the parameter variations resulting from the fabrication processes. Numerical simulation under the influence of the cavity and SQUID decays shows that the scheme could be achieved efficiently within current state-of-the-art technology.

关键词: Grover search, quantum partial search, qudit, superconducting quantum interference device (SQUID)

Abstract: We present a method to implement the quantum partial search of the database separated into any number of blocks with qudits, D-level quantum systems. Compared with the partial search using qubits, our method needs fewer iteration steps and uses the carriers of the information more economically. To illustrate how to realize the idea with concrete physical systems, we propose a scheme to carry out a twelve-dimensional partial search of the database partitioned into three blocks with superconducting quantum interference devices (SQUIDs) in cavity QED. Through the appropriate modulation of the amplitudes of the microwave pulses, the scheme can overcome the non-identity of the cavity–SQUID coupling strengths due to the parameter variations resulting from the fabrication processes. Numerical simulation under the influence of the cavity and SQUID decays shows that the scheme could be achieved efficiently within current state-of-the-art technology.

Key words: Grover search, quantum partial search, qudit, superconducting quantum interference device (SQUID)

中图分类号: (Quantum computation architectures and implementations)

03.67.Lx

85.25.Dq (Superconducting quantum interference devices (SQUIDs))

李虹轶, 吴春旺, 陈玉波, 林源根, 陈平形, 李承祖. Implementation of quantum partial search with superconducting quantum interference device qudits in cavity QED[J]. 中国物理B, 2013, 22(11): 110305-110305.

Li Hong-Yi (李虹轶), Wu Chun-Wang (吴春旺), Chen Yu-Bo (陈玉波), Lin Yuan-Gen (林源根), Chen Ping-Xing (陈平形), Li Cheng-Zu (李承祖). Implementation of quantum partial search with superconducting quantum interference device qudits in cavity QED[J]. Chin. Phys. B, 2013, 22(11): 110305-110305.

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Implementation of quantum partial search with superconducting quantum interference device qudits in cavity QED

Implementation of quantum partial search with superconducting quantum interference device qudits in cavity QED

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