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

Abstract

We propose a method that enables efficient conversion of quantum information frequency between different regions of spectrum of light based on recently demonstrated strong parametric coupling between two narrow-band single-photon pulses propagating in a slow-light atomic medium [1]. We show that an input qubit at telecom wavelength is transformed into another at 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.

4 pages, 1 figure, submitted to Phys. Rev. A

References in corpus (4)

• Deterministic single photons via conditional quantum evolution
• Adiabatic frequency conversion of quantum optical information in atomic vapor
• Entanglement-preserving frequency conversion in cold atoms
• Creation of a Photonic Time-bin Qubit via Parametric Interaction of Photons in a Driven Resonant Medium

Cited by in corpus (4)

• Efficiency of light-frequency conversion in an atomic ensemble
• Characterization of near-infrared to telecom frequency conversion in a rubidium-filled hollow-core photonic-crystal fiber
• Single-photon frequency conversion in nonlinear crystals
• Theory of light-matter interactions in cascade and diamond type atomic ensembles