Linear optical Fredkin gate based on partial-SWAP gate

Details Linear optical Fredkin gate based on partial-SWAP gate Linear optical Fredkin gate based on partial-SWAP gate

2008-09-18

arxiv.org/abs/0809.3228v1

Phys. Rev. A 78, 032317 (2008)

Physics

Quantum Physics

6 pages, 3 figures, RevTeX4

Scientific paper

10.1103/PhysRevA.78.032317

We propose a scheme for linear optical quantum Fredkin gate based on the combination of recently experimentally demonstrated linear optical partial SWAP gate and controlled-Z gates. Both heralded gate and simplified postselected gate operating in the coincidence basis are designed. The suggested setups have a simple structure and require stabilization of only a single Mach-Zehnder interferometer. A proof-of-principle experimental demonstration of the postselected Fredkin gate appears to be feasible and within the reach of current technology.

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