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