Permutation-parity exchange at a beam splitter: Application to Heisenberg-limited interferometry
- Department of Physics and Astronomy, Lehman College, City University of New York, 250 Bedford Boulevard West, Bronx, New York 10468-1589 (United States)
Quantum-optical permutation and parity observables are unitarily exchanged by a 50:50 beam splitter. Bosonic coalescence effects are reexamined from this point of view. We show that photon-number resolving counters behind a beam splitter define a permutation detector for the input optical field. With suitable phase encoding, the detector also enables Heisenberg-limited interferometry.
- OSTI ID:
- 20786395
- Journal Information:
- Physical Review. A, Vol. 72, Issue 6; Other Information: DOI: 10.1103/PhysRevA.72.065803; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
- Country of Publication:
- United States
- Language:
- English
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