Show simple item record

dc.contributor.authorCombes, Joshuaen_US
dc.contributor.authorWiseman, Howarden_US
dc.date.accessioned2017-04-24T08:47:45Z
dc.date.available2017-04-24T08:47:45Z
dc.date.issued2005en_US
dc.date.modified2009-10-08T06:29:44Z
dc.identifier.issn14644266en_US
dc.identifier.doi10.1088/1464-4266/7/1/004en_AU
dc.identifier.urihttp://hdl.handle.net/10072/4934
dc.description.abstractRamsey interferometry allows the estimation of the phase f of rotation of the pseudospin vector of an ensemble of two-state quantum systems. For f small, the noise-to-signal ratio scales as the spin-squeezing parameter ?, with ? < 1 possible for an entangled ensemble. However states with minimum ? are not optimal for single-shot measurements of an arbitrary phase. We define a phase-squeezing parameter, ?, which is an appropriate figure of merit for this case. We show that (unlike the states that minimize ?) the states that minimize can be created by evolving an unentangled state (coherent spin state) by the well known two-axis counter-twisting Hamiltonian. We analyse these and other states (for example the maximally entangled state, analogous to the optical 'NOON' state |?) = (|N, 0) + |0, N))/v2) using several different properties, including ?, <, the coefficients in the pseudo-angular momentum basis (in the three primary directions) and the angular Wigner function W(?,F). Finally, we discuss the experimental options for creating phase-squeezed states and doing single-shot phase estimation.en_US
dc.description.peerreviewedYesen_US
dc.description.publicationstatusYesen_AU
dc.format.extent295213 bytes
dc.format.mimetypeapplication/pdf
dc.languageEnglishen_US
dc.language.isoen_AU
dc.publisherInstitute of Physics Publishing Ltden_US
dc.publisher.placeBristol, UKen_US
dc.publisher.urihttp://www.iop.org/EJ/journal/JOptBen_AU
dc.relation.ispartofstudentpublicationNen_AU
dc.relation.ispartofpagefrom14en_US
dc.relation.ispartofpageto21en_US
dc.relation.ispartofissue1en_US
dc.relation.ispartofjournalJournal of Optics B: Quantum and semiclassical opticsen_US
dc.relation.ispartofvolume7en_US
dc.rights.retentionYen_AU
dc.subject.fieldofresearchcode240402en_US
dc.titleStates for phase estimation in quantum interferometryen_US
dc.typeJournal articleen_US
dc.type.descriptionC1 - Peer Reviewed (HERDC)en_US
dc.type.codeC - Journal Articlesen_US
gro.rights.copyrightCopyright 2005 Institute of Physics Publishing. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher.Please refer to the journal's website for access to the definitive, published version.en_AU
gro.date.issued2005
gro.hasfulltextFull Text


Files in this item

This item appears in the following Collection(s)

  • Journal articles
    Contains articles published by Griffith authors in scholarly journals.

Show simple item record