Implementing Deutsch-Jozsa Algorithm with Superconducting Quantum Interference Devices in Cavity QED

An alternative scheme is proposed in this paper to realize an n-qubit Fredkin gate with superconducting quantum-interference device (SQUID) in cavity QED. The multiqubit logical gate is essentially accomplished by a sequence of operations on only two SQUIDs in a large-detuned cavity. In the scheme, the two logical states of a qubit are presented by the two lowest states of a SQUID and the cavity is always in vacuum state so that the limit on the cavity is not serious.

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Realization of ann-qubit controlled-Ugate with superconducting quantum interference devices or atoms in cavity QED

Physical Review A ◽

10.1103/physreva.73.032317 ◽

2006 ◽

Vol 73 (3) ◽

Cited By ~ 72

Author(s):

Chui-Ping Yang ◽

Siyuan Han

Keyword(s):

Quantum Interference ◽

Cavity Qed ◽

Superconducting Quantum Interference Devices ◽

Superconducting Quantum Interference

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SCHEME FOR IMPLEMENTING AN N-QUBIT CONTROLLED NOT GATE WITH SUPERCONDUCTING QUANTUM INTERFERENCE DEVICES IN CAVITY QED

International Journal of Quantum Information ◽

10.1142/s0219749910006307 ◽

2010 ◽

Vol 08 (08) ◽

pp. 1337-1345

Author(s):

BAO-LONG FANG ◽

ZHEN YANG ◽

LIU YE

Keyword(s):

Quantum Interference ◽

Cavity Qed ◽

Resonant Cavity ◽

Coupling Constants ◽

Toffoli Gate ◽

Superconducting Quantum Interference Devices ◽

Superconducting Quantum Interference ◽

Cavity Coupling ◽

Coupling Error

We present a scheme for implementing a Toffoli gate. The superconducting quantum interference devices are coupled to a resonant cavity with nonidentical SQUID–cavity coupling constants. So only one interaction between SQUID and cavity is required, and a Toffoli gate can be obtained. The method can be generalized to the N-qubit case easily and the scheme is insensitive to systematic coupling error.

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Physical Realization of Probabilistic Cloning Machines of Superconducting Quantum Interference Devices in Cavity QED

ACTA PHOTONICA SINICA ◽

10.3788/gzxb20103903.0537 ◽

2010 ◽

Vol 39 (3) ◽

pp. 537-542

Author(s):

朱艳 ZHU Yan ◽

顾永建 GU Yong-jian ◽

徐舟 XU Zhou ◽

谢琳 XIE Lin ◽

马丽珍 MA Li-zhen

Keyword(s):

Quantum Interference ◽

Cavity Qed ◽

Physical Realization ◽

Superconducting Quantum Interference Devices ◽

Superconducting Quantum Interference

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REALIZATION OF QUANTUM LOGIC GATES AND CLUSTER STATES WITH SUPERCONDUCTING QUANTUM-INTERFERENCE DEVICES

International Journal of Quantum Information ◽

10.1142/s0219749911007423 ◽

2011 ◽

Vol 09 (01) ◽

pp. 563-570

Author(s):

ZHIMING ZHAN

Keyword(s):

Quantum Logic ◽

Quantum Interference ◽

Cavity Qed ◽

Logic Gates ◽

Raman Transition ◽

Cluster States ◽

Superconducting Quantum Interference Devices ◽

Quantum Logic Gates ◽

Superconducting Quantum Interference ◽

Squid System

We propose a method for realizing quantum logic gates and cluster states with superconducting quantum-interference devices (SQUIDs) in cavity QED via Raman transition. In this proposal, quantum logic gates and cluster states are realized by using only two lower flux states of the SQUID system and the excited state would not be excited. Therefore, the effect of decoherence caused by the levels of the SQUID system is possibly minimized.

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