Complementarity and quantum erasure with entangled-photon states
2000 (English)In: Physical Review A. Atomic, Molecular, and Optical Physics, ISSN 1050-2947, E-ISSN 1094-1622, Vol. 62, no 3, art. no.-32106 p.Article in journal (Refereed) Published
A quantum-erasure experiment was performed on superposition states of two photons in either of two spatiotemporal modes. Symmetrical tapping of energy from the two-mode state creates a four-mode entangled state. A direct measurement of one photon in two of the modes reveals the path of the second one, thereby eliminating the possibility of observing interference between the two remaining modes. It is shown that a unitary rotation of one of the two-mode states erases the path information; as a consequence, the visibility of the other two-mode state can be resurrected.
Place, publisher, year, edition, pages
2000. Vol. 62, no 3, art. no.-32106 p.
parametric down-conversion, which-way information, 2-photon interference, fringe visibility, 2 photons, eraser, uncertainty, coherence, interferometer, phase
IdentifiersURN: urn:nbn:se:kth:diva-20033ISI: 000089255400014OAI: oai:DiVA.org:kth-20033DiVA: diva2:338726
QC 201005252010-08-102010-08-10Bibliographically approved