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Photonic Quantum Computing

Ultrafast slow-light: Raman-induced delay of THz-bandwidth pulses

arXiv
Authors: Philip J. Bustard, Khabat Heshami, Duncan G. England, Michael Spanner, Benjamin J. Sussman

Year

2015

Paper ID

7926

Status

Preprint

Abstract Read

~2 min

Abstract Words

94

Citations

N/A

Abstract

We propose and experimentally demonstrate a scheme to generate optically-controlled delays based on off-resonant Raman absorption. Dispersion in a transparency window between two neighboring, optically-activated Raman absorption lines is used to reduce the group velocity of broadband 765 nm pulses. We implement this approach in a potassium titanyl phosphate (KTP) waveguide at room temperature, and demonstrate Raman-induced delays of up to 140 fs for a 650-fs duration, 1.8-THz bandwidth, signal pulse; the available delay-bandwidth product is approx1. Our approach is applicable to single photon signals, offers wavelength tunability, and is a step toward processing ultrafast photons.

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  • This paper contributes to the Photonic Quantum Computing research area in the Quantum Articles archive.
  • It adds a 2015 reference point for readers tracking recent quantum research.
  • We propose and experimentally demonstrate a scheme to generate optically-controlled delays based on off-resonant Raman absorption.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1508.01729 [2] arXiv https://arxiv.org/abs/1508.01729 [3] Publisher https://arxiv.org/abs/1508.01729

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