Qubit transfer between photons at telecom and visible wavelengths in a slow-light atomic medium

Journal Article · Mon Feb 15 00:00:00 EST 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.81.024304· OSTI ID:21408337

Gogyan, A ^[1]

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1. Institute for Physical Research, Armenian National Academy of Sciences, Ashtarak-2, 0203 (Armenia) and Laboratoire Interdisciplinaire Carnot de Bourgogne, UMR CNRS 5209, BP 47870, F-21078 Dijon (France)

We propose a method that enables efficient conversion of the quantum information frequency between different regions of a spectrum of light based on recently demonstrated strong parametric coupling between two narrow-band single-photon pulses propagating in a slow-light atomic medium [N. Sisakyan and Yu. Malakyan, Phys. Rev. A, 75, 063831 (2007)]. We show that an input qubit at telecom wavelength is transformed into another at a visible domain in a lossless and shape-conserving manner while keeping the initial quantum coherence and entanglement. These transformations can be realized with a quantum efficiency close to its maximum value.

• OSTI ID: 21408337
• Journal Information: Physical Review. A, Vol. 81, Issue 2; Other Information: DOI: 10.1103/PhysRevA.81.024304; (c) 2010 The American Physical Society; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CONVERSION
COUPLING
PHOTONS
PULSES
QUANTUM EFFICIENCY
QUANTUM ENTANGLEMENT
QUANTUM INFORMATION
SHAPE
SPECTRA
TRANSFORMATIONS
VISIBLE RADIATION
WAVELENGTHS
BOSONS
EFFICIENCY
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
INFORMATION
MASSLESS PARTICLES
RADIATIONS