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

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...

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Bibliographic Details
Published in:IEEE journal of selected topics in quantum electronics 2009-11, Vol.15 (6), p.1685-1693
Main Authors: Patel, M., Altepeter, J.B., Hall, M.A., Medic, M., Kumar, P.
Format: Article
Language:English
Subjects:
Biomedical optical imaging
Computation
Controlled- not ( cnot )
entangling gate
Gates
Information processing
Optical computing
Optical control
Optical polarization
Physics
Polarization
process tomography
Quantum computing
Quantum electronics
Telecommunication computing
Telecommunication control
Time measurement
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Summary: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%.
ISSN:1077-260X
1558-4542
DOI:10.1109/JSTQE.2009.2025704