Polarisation-preserving photon frequency conversion from a trapped-ion-compatible wavelength to the telecom C-band

Polarisation-preserving photon frequency conversion from a trapped-ion-compatible wavelength to... We demonstrate polarisation-preserving frequency conversion of single-photon-level light at 854 nm, resonant with a trapped-ion transition and qubit, to the 1550-nm telecom C band. A total photon in / fiber-coupled photon out efficiency of $$\sim$$ ∼ 30% is achieved, for a free-running photon noise rate of $$\sim$$ ∼ 60 Hz. This performance would enable telecom conversion of 854 nm polarisation qubits, produced in existing trapped-ion systems, with a signal-to-noise ratio greater than 1. In combination with near-future trapped-ion systems, our converter would enable the observation of entanglement between an ion and a photon that has travelled more than 100 km in optical fiber: three orders of magnitude further than the state-of-the-art. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Applied Physics B Springer Journals

Polarisation-preserving photon frequency conversion from a trapped-ion-compatible wavelength to the telecom C-band

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Publisher
Springer Berlin Heidelberg
Copyright
Copyright © 2017 by The Author(s)
Subject
Physics; Physics, general; Physical Chemistry; Optics, Lasers, Photonics, Optical Devices; Quantum Optics; Engineering, general
ISSN
0946-2171
eISSN
1432-0649
D.O.I.
10.1007/s00340-017-6806-8
Publisher site
See Article on Publisher Site

Abstract

We demonstrate polarisation-preserving frequency conversion of single-photon-level light at 854 nm, resonant with a trapped-ion transition and qubit, to the 1550-nm telecom C band. A total photon in / fiber-coupled photon out efficiency of $$\sim$$ ∼ 30% is achieved, for a free-running photon noise rate of $$\sim$$ ∼ 60 Hz. This performance would enable telecom conversion of 854 nm polarisation qubits, produced in existing trapped-ion systems, with a signal-to-noise ratio greater than 1. In combination with near-future trapped-ion systems, our converter would enable the observation of entanglement between an ion and a photon that has travelled more than 100 km in optical fiber: three orders of magnitude further than the state-of-the-art.

Journal

Applied Physics BSpringer Journals

Published: Aug 18, 2017

References

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