Generalised Ramsey methods for suppressing light shifts in atomic clocks based on the coherent population trapping effect

D. V. Kovalenko, A. V. Taichenachev, M. Y. Basalaev, V. I. Yudin, T. Zanon-Willette

Research output: Contribution to journalArticlepeer-review

Abstract

We study the possibility of suppressing light shifts in Ramsey spectroscopy of coherent population trapping (CPT) using generalised autobalanced Ramsey spectroscopy (GABRS) and combined error signal in Ramsey spectroscopy (CESRS). We consider CPT resonances excited by a coherent bichromatic field in an open L-system with a 'trap' state. Using a rigorous mathematical proof and numerical calculations, these methods are shown to lead to complete suppression of the light shift and its fluctuations. Implementation of GABRS and CESRS in CPT clocks can markedly improve accuracy and long-term stability of these devices. These methods can also be applied in atomic CPT magnetometers and interferometers.

Original languageEnglish
Pages (from-to)495-501
Number of pages7
JournalQuantum Electronics
Volume51
Issue number6
DOIs
Publication statusPublished - Jun 2021

Keywords

  • Atomic clocks and magnetometers
  • Coherent population trapping resonances
  • Light shifts
  • Ramsey spectroscopy

OECD FOS+WOS

  • 2.02 ELECTRICAL ENG, ELECTRONIC ENG
  • 2.05 MATERIALS ENGINEERING
  • 1.03 PHYSICAL SCIENCES AND ASTRONOMY
  • 1.03.UB PHYSICS, APPLIED

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