Postselection-free energy-time entanglement.
نویسندگان
چکیده
We report a two-photon interference experiment that realizes a postselection-free test of Bell’s inequality based on energy-time entanglement. In contrast with all previous experiments of this type, the employed entangled states are obtained without the use of a beam splitter or a short coincidence window to ‘‘throw away’’ unwanted amplitudes. A ~95.061.4!% interference fringe visibility is observed, implying a strong violation of the Bell inequality. The scheme is very compact and has demonstrated excellent stability, suggesting that it may be useful, for example, in practical quantum cryptography. @S1050-2947~96!50607-4#
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ورودعنوان ژورنال:
- Physical review. A, Atomic, molecular, and optical physics
دوره 54 1 شماره
صفحات -
تاریخ انتشار 1996