## Scheme for implementing linear optical quantum iSWAP gate with conventional photon detectors

JOSA B, Vol. 27, Issue 1, pp. 27-31 (2010)

http://dx.doi.org/10.1364/JOSAB.27.000027

Enhanced HTML Acrobat PDF (125 KB)

### Abstract

A simple scheme is proposed to implement a two-qubit linear optical quantum iSWAP gate that is a universal gate in quantum computation and quantum information processing. By the interference effect of the polarized photons, a quantum iSWAP gate can be achieved with a low success probability (*η* being the quantum efficiency of photon detectors). The scheme is based only on simple linear optical elements, a pair of two-photon polarization entangled states, and conventional photon detectors that only distinguish the vacuum and nonvacuum Fock number states, which greatly decreases the experimental difficulty of implementing linear optical quantum computation.

© 2009 Optical Society of America

**OCIS Codes**

(270.0270) Quantum optics : Quantum optics

(270.5585) Quantum optics : Quantum information and processing

**ToC Category:**

Quantum Optics

**History**

Original Manuscript: August 25, 2009

Revised Manuscript: October 28, 2009

Manuscript Accepted: November 2, 2009

Published: December 11, 2009

**Citation**

Hong-Fu Wang, Xiao-Qiang Shao, Yong-Fang Zhao, Shou Zhang, and Kyu-Hwang Yeon, "Scheme for implementing linear optical quantum iSWAP gate with conventional photon detectors," J. Opt. Soc. Am. B **27**, 27-31 (2010)

http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-27-1-27

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