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Experimental Characterization of a Telecommunications-Band Quantum Controlled- not Gate

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5 Author(s)
Patel, M. ; Dept. of Phys., Northwestern Univ., Evanston, IL, USA ; Altepeter, J.B. ; Hall, M.A. ; Medic, M.
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The quantum controlled-not gate is an example of the maximally entangling gate, which is a broad class of operations that are necessary for scalable linear optics quantum computation. Here, we characterize a telecommunications-wavelength (1550 nm) quantum controlled- not gate, and for the first time, experimentally bound its process fidelity by measuring its operation in two complementary polarization bases. The gate's final process fidelity F is given by 91% ?? F ?? 95%.

Published in:

Selected Topics in Quantum Electronics, IEEE Journal of  (Volume:15 ,  Issue: 6 )

Date of Publication:

Nov.-dec. 2009

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