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Trapped Ion Quantum Computing

A Simple and Efficient Absorption Filter for Single Photons from a Cold Atom Quantum Memory

arXiv
Authors: Dan T. Stack, Patricia J. Lee, Qudsia Quraishi

Year

2014

Paper ID

46241

Status

Preprint

Abstract Read

~2 min

Abstract Words

116

Citations

N/A

Abstract

The ability to filter unwanted light signals is critical to the operation of quantum memories based on neutral atom ensembles. Here we demonstrate an efficient frequency filter which uses a vapor cell filled with 85Rb and a buffer gas to attenuate both residual laser light and noise photons by nearly two orders of magnitude with little loss to the single photons associated with our cold 87Rb quantum memory. This simple, passive filter provides an additional 18 dB attenuation of our pump laser and erroneous spontaneous emissions for every 1 dB loss of the single photon signal. We show that the addition of a frequency filter increases the non-classical correlations and readout efficiency of our quantum memory by approx35\%.

Why This Paper Matters

  • This paper contributes to the Trapped-Ion Quantum Computing research area in the Quantum Articles archive.
  • It adds a 2014 reference point for readers tracking recent quantum research.
  • The ability to filter unwanted light signals is critical to the operation of quantum memories based on neutral atom ensembles.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1411.7430 [2] arXiv https://arxiv.org/abs/1411.7430 [3] Publisher https://arxiv.org/abs/1411.7430

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