Abstract

We present a fast and effective scheme to implement the multiqubit discrete quantum Fourier transform (DQFT) for distant atoms trapped in separate cavities connected by optical fibers via a virtual-photon-induced process. The effective coupling between two distributed atoms is achieved without exciting and transporting photons through the optical fiber, and the gate operation is robust against the decoherence effect when the thermal photons in the environment are negligible. The implementation of the scheme is appealingly simple because the complex combination of quantum gate operations, which act on each two qubits in the rearranged DQFT circuit, is achieved only in one step through the interaction controlled by optical switches between two adjacent cavities. The scheme opens promising perspectives for scalable quantum communication networks and distributed quantum computation.

© 2012 Optical Society of America

Full Article  |  PDF Article
Related Articles
Distributed CNOT gate via quantum Zeno dynamics

Xiao-Qiang Shao, Hong-Fu Wang, Li Chen, Shou Zhang, Yong-Fang Zhao, and Kyu-Hwang Yeon
J. Opt. Soc. Am. B 26(12) 2440-2444 (2009)

Unconventional geometric phase gate with two nonidentical quantum dots trapped in a photonic crystal cavity

Jian-Qi Zhang, Ya-Fei Yu, and Zhi-Ming Zhang
J. Opt. Soc. Am. B 28(8) 1959-1963 (2011)

Robust Toffoli gate originating from Stark shifts

Xiao-Qiang Shao, Tai-Yu Zheng, and Shou Zhang
J. Opt. Soc. Am. B 29(6) 1203-1207 (2012)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (3)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Tables (1)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (20)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription