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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

Subject

Location

Language

English

Cited in

Identifier

ark:/32150/r19c67wm80g
doi:10.15128/r19c67wm80g

Rights

All rights reserved All rights reserved

Publisher

Durham University

Date Created

File Details

Depositor

N.C. Keegan

Date Uploaded

16 November 2016, 18:11:35

Date Modified

18 November 2016, 10:11:51

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Characterization

File format: vnd.ms-excel (XLS)

Mime type: application/vnd.ms-excel

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.