Quantal phase for nonmaximally entangled photons
2000 (English)In: Physical Review A. Atomic, Molecular, and Optical Physics, ISSN 1050-2947, E-ISSN 1094-1622, Vol. 62, no 6, p. 062301-Article in journal (Refereed) Published
Abstract [en]
We calculate the Pancharatnam phase difference obtained when entangled two-photon states interfere. This phase depends nontrivially on the degree of entanglement between the photons forming the two-photon state. We outline an experiment where the entanglement dependence of the two-photon phase may be studied interferometrically. Also we propose how a cyclic version of this phase may be useful for implementing an efficient quantum gate.
Place, publisher, year, edition, pages
2000. Vol. 62, no 6, p. 062301-
Keywords [en]
Pancharatnam phase, polarization-entangled photons, quantum interferometry, nonlocality
National Category
Physical Sciences
Research subject
Physics
Identifiers
URN: urn:nbn:se:uu:diva-36852DOI: 10.1103/PhysRevA.62.062301ISI: 000165697200016OAI: oai:DiVA.org:uu-36852DiVA, id: diva2:64751
Note
Additional addresses (B. Hessmo): Innsbruck Univ., Institute for Experimental Physics, Austria; Harvard Smithsonian Center for Astrophysics, ITAMP, Cambridge, USA. Additional address (E. Sjöqvist): Atominstitut, Vienna, Austria
2006-12-212006-12-212017-12-06