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Difference-frequency combs in cold atom physics: Supporting data Open Access

Abstract from paper: Optical frequency combs provide the clockwork to relate optical frequencies to radio frequencies. Hence, combs allow optical frequencies to be measured with respect to a radio frequency where the accuracy is limited only by the reference signal. In order to provide a stable link between the radio and optical frequencies, the two parameters of the frequency comb must be fixed: the carrier envelope offset frequency, fceo, and the pulse repetition-rate, frep. We have developed the first optical frequency comb based on difference frequency generation (DFG) that eliminates fceo by design — specifically tailored for applications in cold atom physics. An fceo-free spectrum at 1550 nm is generated from a super continuum spanning more than an optical octave. Established amplification and frequency conversion techniques based on reliable telecom fibre technology allow the generation of multiple wavelength outputs. The DFG comb is a convenient tool to both stabilise laser sources and accurately measure optical frequencies in Rydberg experiments and more generally in quantum optics. In this paper we discuss the frequency comb design, characterization, and optical frequency measurement of Strontium Rydberg states. The DFG technique allows for a compact and robust, passively fceo stable frequency comb significantly improving reliability in practical applications.

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Resource type
Dataset
Contributors
Creator: Jones, Matthew P. A. 1
Contact person: Jones, Matthew P. A. 1
Creator: Bridge, Elizabeth M. 1
Creator: Bounds, Alistair D. 1
Creator: Keegan, Niamh C. 1
Creator: Cornish, Simon L. 1
Creator: Adams, Charles S. 1
Creator: Leonard, Jack 2
Creator: Kaenders, Wilhelm 2
Creator: Leisching, Patrick 2
Creator: Zach, Armin 2
Creator: Sell, Alexander 2
Creator: Rohde, Felix 2
Creator: Puppe, Thomas 2
Creator: Hoghooghi, Nazanin 2
Creator: Kliese, Russell 2
1 Joint Quantum Centre (JQC) Durham-Newcastle, United Kingdom
2 TOPTICA Photonics, Germany
Funder
Marie Curie Initial Training Networks: QTea and COHERENCE
Engineering and Physical Sciences Research Council
Rydberg Quantum Simulator (RYSQ)
Hybrid Architecture for quantum Information using Rydberg ensembles and Superconductors (HAIRS)
Research methods
Other description
Supports the work "Difference-frequency combs in cold atom physics". Contains data for the beat notes and spectrum (the measured ion counts at each Rydberg laser detuning) shown in Figure 7.
Keyword
Rydberg Spectrum
Frequency Comb
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Location
Language
English
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Identifier
ark:/32150/r19c67wm80g
doi:10.15128/r19c67wm80g
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All rights reserved All rights reserved
Publisher
Durham University
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N.C. Keegan
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File format: vnd.ms-excel (XLS)
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File size: 825344
Last modified: 2016:11:16 18:09:38+00:00
Filename: Figure 7.csv
Original checksum: b8eefc8949286d8830b453db501a95af
File author: KEEGAN N.C.
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