Generation of unconventional geometric phase gates in ion trap-optical cavity system by squeezed operators

doi:10.1088/1674-1056/17/2/013

Abstract

Abstract Based on squeezed operators this paper has implemented an ideal unconventional geometric quantum gate (GQG) in ion trap-optical cavity system by radiating the trapped ions with the cavity field of frequency

ω_{c}

and an external laser field of frequency

ω_{L}

. It can ensure that the gate time is shorter than the coherence time for qubits and the decay time of the optical cavity by appropriately tuning the ionic transition frequency

ω_{0}

, the frequencies of the cavity mode

ω_{c}

and the vibrational mode

ν

. It has also realized the unconventional GQG under the influence of the cavity decay based on the squeezed-like operators and found that the present scheme works well for the smaller cavity decay by investigating the corresponding fidelity and success probability.

Keywords: quantum phase gates squeezed operators trapped ions

Received: 11 April 2007
Revised: 03 July 2007
Accepted manuscript online:

PACS:	03.67.Lx	(Quantum computation architectures and implementations)
	42.50.Dv	(Quantum state engineering and measurements)
	42.50.Pq	(Cavity quantum electrodynamics; micromasers)

Fund: Project supported by the National Natural Science Foundation of China (Grant No 60667001) and the Science Foundation of Yanbian University in China (Grant No 2007-31).

Cite this article:

Zhang Ying-Qiao(张英俏), Jin Xing-Ri(金星日), and Zhang Shou(张寿) Generation of unconventional geometric phase gates in ion trap-optical cavity system by squeezed operators 2008 Chin. Phys. B 17 424

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Generation of unconventional geometric phase gates in ion trap-optical cavity system by squeezed operators

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