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Measurement-based generation of shaped single photons and coherent state superpositions in optical cavities

Lecamwasam, Ruvindha; Hush, Michael; James, Matthew; Carvalho, Andre

Description

We propose related schemes to generate arbitrarily shaped single photons, i.e., photons with an arbitrary temporal profile, and coherent state superpositions using simple optical elements. The first system consists of two coupled cavities, a memory cavity and a shutter cavity, containing a second-order optical nonlinearity and electro-optic modulator (EOM), respectively. Photodetection events of the shutter cavity output herald preparation of a single photon in the memory cavity, which may be...[Show more]

dc.contributor.authorLecamwasam, Ruvindha
dc.contributor.authorHush, Michael
dc.contributor.authorJames, Matthew
dc.contributor.authorCarvalho, Andre
dc.date.accessioned2020-12-20T20:57:16Z
dc.date.available2020-12-20T20:57:16Z
dc.identifier.issn1050-2947
dc.identifier.urihttp://hdl.handle.net/1885/218213
dc.description.abstractWe propose related schemes to generate arbitrarily shaped single photons, i.e., photons with an arbitrary temporal profile, and coherent state superpositions using simple optical elements. The first system consists of two coupled cavities, a memory cavity and a shutter cavity, containing a second-order optical nonlinearity and electro-optic modulator (EOM), respectively. Photodetection events of the shutter cavity output herald preparation of a single photon in the memory cavity, which may be stored by immediately changing the optical length of the shutter cavity with the EOM after detection. On-demand readout of the photon, with arbitrary shaping, can be achieved through modulation of the EOM. The second scheme consists of a memory cavity with two outputs, which are interfered, phase shifted, and measured. States that closely approximate a coherent state superposition can be produced through postselection for sequences of detection events, with more photon detection events leading to a larger superposition. We furthermore demonstrate that no-knowledge feedback can be easily implemented in this system and used to preserve the superposition state, as well as provide an extra control mechanism for state generation
dc.description.sponsorshipWe gratefully acknowledge support by the Australian Research Council Centre of Excellence for Quantum Computation and Communication Technology (Project No. CE110001027), and an Australian Government Research Training Program (RTP) Scholarship. M.R.H. acknowledges funding from an Australian Research Council (ARC) Discovery Project (Project No. DP140101779).
dc.format.mimetypeapplication/pdf
dc.language.isoen_AU
dc.publisherAmerican Physical Society
dc.rightsRuvi Lecamwasam now added in Aries.
dc.rights© 2017 American Physical Society
dc.sourcePhysical Review A: Atomic, Molecular and Optical Physics
dc.titleMeasurement-based generation of shaped single photons and coherent state superpositions in optical cavities
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume95
dc.date.issued2017-01-18
local.identifier.absfor020503 - Nonlinear Optics and Spectroscopy
local.identifier.ariespublicationa383154xPUB6357
local.type.statusPublished Version
local.contributor.affiliationLecamwasam, Ruvindha, College of Science, ANU
local.contributor.affiliationHush, Michael, College of Science, ANU
local.contributor.affiliationJames, Matthew, College of Engineering and Computer Science, ANU
local.contributor.affiliationCarvalho, Andre, College of Science, ANU
local.bibliographicCitation.issue1
local.identifier.doi10.1103/PhysRevA.95.013828
local.identifier.absseo970102 - Expanding Knowledge in the Physical Sciences
dc.date.updated2020-11-23T10:48:23Z
local.identifier.scopusID2-s2.0-85009997119
local.identifier.thomsonID000392070800011
dcterms.accessRightsOpen Access
dc.relation.urihttp://purl.org/au-research/grants/arc/DP140101779
dc.relation.urihttp://purl.org/au-research/grants/arc/CE1101027
dc.provenancehttps://v2.sherpa.ac.uk/id/publication/13634..."Published version can be made open access on institutional repository" from SHERPA/RoMEO site (as at 29.11.2021).
CollectionsANU Research Publications

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