Optical Nondestructive Controlled-NOT Gate without Using Entangled Photons

Details Optical Nondestructive Controlled-NOT Gate without Using Entangled Photons Optical Nondestructive Controlled-NOT Gate without Using Entangled Photons

2006-10-21

arxiv.org/abs/quant-ph/0610182v3

Phys. Rev. Lett. 98 170502 (2007)

Physics

Quantum Physics

5 pages, 3 figures, Slight changes have been made, Journal-ref added

Scientific paper

10.1103/PhysRevLett.98.170502

We present and experimentally demonstrate a novel optical nondestructive controlled-NOT gate without using entangled ancilla. With much fewer measurements compared with quantum process tomography, we get a good estimation of the gate fidelity. The result shows a great improvement compared with previous experiments. Moreover, we also show that quantum parallelism is achieved in our gate and the performance of the gate can not be reproduced by local operations and classical communications.

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