Feasibility of Bell tests with the W state
2010 (English)In: Physical Review A. Atomic, Molecular, and Optical Physics, ISSN 1050-2947, E-ISSN 1094-1622, Vol. 81, no 3Article in journal (Refereed) Published
The feasibility of Bell tests depends to a large extent on the tradeoff of difficulty between the preparation and the measurement of entangled systems. Polarization-entangled systems, though easy to measure, pose a relative challenge in their preparation. The opposite holds with entangled energy eigenstates for which the preparation is relatively straightforward. A way to perform measurements using a photodetector along the x, y, and z axes (in a Bloch sphere picture) on such Fock-state qubits shall be worked out, taking the W state as our entangled system. This will, by the same token, allow us to determine the minimum quantum efficiency required to perform a conclusive Bell test with the W energy eigenstate.
Place, publisher, year, edition, pages
2010. Vol. 81, no 3
Atom and Molecular Physics and Optics
IdentifiersURN: urn:nbn:se:kth:diva-19370DOI: 10.1103/PhysRevA.81.033823ISI: 000276262500202ScopusID: 2-s2.0-77949352925OAI: oai:DiVA.org:kth-19370DiVA: diva2:337417
QC 201005252010-08-052010-08-052011-01-19Bibliographically approved