Spatial correlation of photon pairs produced in spontaneous parametric down-conversion

Journal Article · Mon Oct 11 04:00:00 EDT 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3507428· OSTI ID:21428657

Procopio, L M ^[1]; Rosas-Ortiz, O ^[1]; Velazquez, V ^[2]

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1. Departamento de Fisica, Cinvestav, A.P. 14-740, Mexico D.F. 07000 (Mexico)
2. Facultad de Ciencias, Universidad Nacional Autonoma de Mexico, A.P. 20-364, Mexico D.F. 04510 (Mexico)

We report the observation of spatial biphoton correlation in spontaneous parametric down conversion. The optical bench includes a type-I BBO crystal of effective length 2 mm, pumped by a 100 mW violet laser diode centered at 405.38 nm. Photon pairs are created with degenerate wavelength {approx_equal}810.76 nm. Once the horizontal counting rates have been measured, a simple geometrical recipe is shown to be useful in calculating bounds for the width of vertical counting rates. The spatial correlation between idler and signal photons is illustrated with a coincidence distribution of the coordinate pair (x{sub s},x{sub i}), with x{sub i,s} the idler (signal) detector position in horizontal scan.

• OSTI ID: 21428657
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1287; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BOSONS
CONVERSION
COORDINATES
CORRELATIONS
COUNTING RATES
CRYSTALS
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
FREQUENCY MIXING
HARMONIC GENERATION
INTERACTIONS
LASER RADIATION
MASSLESS PARTICLES
MECHANICS
OPTICS
PAIR PRODUCTION
PARTICLE PRODUCTION
PHOTONS
POLARIZATION
QUANTUM MECHANICS
RADIATIONS