Abstract
The notion of wave-particle duality may be quantified by the inequality ${V}^{2}{+K}^{2}<~1,$ relating interference fringe visibility V, and path knowledge K. With a single-photon interferometer in which polarization is used to label the paths, we have investigated the relation for various situations, including pure, mixed, and partially mixed input states. A quantum-eraser scheme has been realized that recovers interference fringes even when no which way information is available to erase.
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Schedule a callMore From: Physical review. A, Atomic, molecular, and optical physics
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