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arXiv · 0711.4534

Experimental realization of linear-optical partial SWAP gates

A. Cernoch·J. Soubusta·L. Bartuskova·M. Dusek·J. Fiurasek
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Abstract

We present a linear-optical implementation of a class of two-qubit partial SWAP gates for polarization states of photons. Different gate operations, including the SWAP and entangling square root of SWAP, can be obtained by changing a classical control parameter -- namely the path difference in the interferometer. Reconstruction of output states, full process tomography and evaluation of entanglement of formation prove very good performance of the gates.

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A. Cernoch, J. Soubusta, L. Bartuskova, M. Dusek, J. Fiurasek. 2007-11-28. Experimental realization of linear-optical partial SWAP gates. https://doi.org/10.1103/physrevlett.100.180501

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