Efficient Scheme for Entanglement and Quantum Information Processing with Two Superconducting Quantum-Interference Devices in Cavity QED

2007 ◽  
Vol 47 (4) ◽  
pp. 722-724
Author(s):  
Zhan Zhi-Ming
Keyword(s):  
Information Processing ◽  
Quantum Information ◽  
Quantum Interference ◽  
Cavity Qed ◽  
Quantum Information Processing ◽  
Superconducting Quantum Interference Devices ◽  
Superconducting Quantum Interference ◽  
Efficient Scheme

IMPLEMENTING AN n-QUBIT FREDKIN GATE WITH SUPERCONDUCTING QUANTUM-INTERFERENCE DEVICES IN CAVITY QED

2011 ◽  
Vol 25 (21) ◽  
pp. 2915-2924 ◽  
Author(s):  
ANSHOU ZHENG ◽  
YONGJIN CHENG ◽  
JIBIN LIU ◽  
XICHENG WANG ◽  
YUAN ZHENG
Keyword(s):  
Quantum Interference ◽  
Cavity Qed ◽  
Vacuum State ◽  
Superconducting Quantum Interference Device ◽  
Alternative Scheme ◽  
Superconducting Quantum Interference Devices ◽  
Superconducting Quantum Interference ◽  
Fredkin Gate ◽  
Logical Gate

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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