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Quantitative wave-particle duality and nonerasing quantum erasure

Journal Article · · Physical Review. A
 [1];  [1];  [2]
  1. Physics Division, P-23, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
  2. Max-Planck-Institut fuer Quantenoptik, Hans-Kopfermann-Strasse 1, 85748 Garching, (Germany)
The notion of wave-particle duality may be quantified by the inequality V{sup 2}+K{sup 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. (c) 1999 The American Physical Society.
OSTI ID:
20217924
Journal Information:
Physical Review. A, Journal Name: Physical Review. A Journal Issue: 6 Vol. 60; ISSN 1050-2947; ISSN PLRAAN
Country of Publication:
United States
Language:
English

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