Deterministic controlled-NOT gate for single-photon two-qubit quantum logic.
نویسندگان
چکیده
We demonstrate a robust implementation of a deterministic linear-optical controlled-not gate for single-photon two-qubit quantum logic. A polarization Sagnac interferometer with an embedded 45 degrees -oriented dove prism is used to enable the polarization control qubit to act on the momentum (spatial) target qubit of the same photon. The optical controlled-not gate requires no active stabilization because the two spatial modes share a common path, and it is used to entangle the polarization and momentum qubits.
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ورودعنوان ژورنال:
- Physical review letters
دوره 93 7 شماره
صفحات -
تاریخ انتشار 2004