Quantum correlations in position, momentum, and intermediate bases for a full optical field of view

J. Leach, Ryan Warburton, David G. Ireland, Frauke Izdebski, Stephen Barnett, Alison Yao, G.S. Buller, M.J. Padgett

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

We report an eight-element, linear-array, single-photon detector that uses multiple fibers of differing lengths coupled to a single detector, the timing information from which reveals the position in which the photon was measured. Using two such arrays and two detectors we measure the correlations of photons produced by parametric downconversion, without recourse to mechanical scanning. Spatial light modulators acting as variable focal length lenses positioned between the downconversion crystal and the arrays allow us to switch between measurement of position, transverse momentum, or intermediate bases. We observe the product of the variances of the conditional probabilities for position and momentum to be more than an order of magnitude below the classical limit, realizing a full-field demonstration of the Einstein-Podolsky-Rosen paradox. Such, multistate measurement technologies allow access to the higher information content of the photon based upon spatial modes.
LanguageEnglish
Article number013827
Number of pages4
JournalPhysical Review A
Volume85
Issue number1
DOIs
Publication statusPublished - 20 Jan 2012

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field of view
momentum
photons
detectors
paradoxes
linear arrays
light modulators
transverse momentum
lenses
time measurement
scanning
fibers
products
crystals

Keywords

  • optical field
  • quantum physics
  • multiple fibers

Cite this

Leach, J., Warburton, R., Ireland, D. G., Izdebski, F., Barnett, S., Yao, A., ... Padgett, M. J. (2012). Quantum correlations in position, momentum, and intermediate bases for a full optical field of view. Physical Review A, 85(1), [013827]. https://doi.org/10.1103/PhysRevA.85.013827
Leach, J. ; Warburton, Ryan ; Ireland, David G. ; Izdebski, Frauke ; Barnett, Stephen ; Yao, Alison ; Buller, G.S. ; Padgett, M.J. / Quantum correlations in position, momentum, and intermediate bases for a full optical field of view. In: Physical Review A. 2012 ; Vol. 85, No. 1.
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Leach, J, Warburton, R, Ireland, DG, Izdebski, F, Barnett, S, Yao, A, Buller, GS & Padgett, MJ 2012, 'Quantum correlations in position, momentum, and intermediate bases for a full optical field of view' Physical Review A, vol. 85, no. 1, 013827. https://doi.org/10.1103/PhysRevA.85.013827

Quantum correlations in position, momentum, and intermediate bases for a full optical field of view. / Leach, J.; Warburton, Ryan; Ireland, David G.; Izdebski, Frauke; Barnett, Stephen; Yao, Alison; Buller, G.S.; Padgett, M.J.

In: Physical Review A, Vol. 85, No. 1, 013827, 20.01.2012.

Research output: Contribution to journalArticle

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