Quantitative wave-particle duality and nonerasing quantum erasure

Peter D.D. Schwindt, Paul G. Kwiat, Berthold Georg Englert

Research output: Contribution to journalArticlepeer-review


The notion of wave-particle duality may be quantified by the inequality [Formula Presented] 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.

Original languageEnglish (US)
Pages (from-to)4285-4290
Number of pages6
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Issue number6
StatePublished - 1999
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


Dive into the research topics of 'Quantitative wave-particle duality and nonerasing quantum erasure'. Together they form a unique fingerprint.

Cite this