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  Synchronization of Active Atomic Clocks via Quantum and Classical Channels

Roth, A., & Hammerer, K. (2016). Synchronization of Active Atomic Clocks via Quantum and Classical Channels. Physical Review A, 94: 043841. doi:10.1103/PhysRevA.94.043841.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002C-3F08-C Version Permalink: http://hdl.handle.net/21.11116/0000-0002-F9CB-1
Genre: Journal Article

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 Creators:
Roth, Alexander, Author
Hammerer, Klemens1, Author              
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1Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24010              

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Free keywords: Quantum Physics, quant-ph, Physics, Atomic Physics, physics.atom-ph, Physics, Optics, physics.optics
 Abstract: Superradiant lasers based on atomic ensembles exhibiting ultra-narrow optical transitions can emit light of unprecedented spectral purity and may serve as active atomic clocks. We consider two frequency-detuned active atomic clocks, which are coupled in a cascaded setup, i.e. as master & slave lasers, and study the synchronization of the slave to the master clock. In a setup where both atomic ensembles are coupled to a common cavity mode such synchronization phenomena have been predicted by Xu et al. [Phys. Rev. Lett. 113, 154101 (2014)] and experimentally observed by Weiner et al. [arXiv:1503.06464 (2015)]. Here we demonstrate that synchronization still occurs in cascaded setups but exhibits distinctly different phase diagrams. We study the characteristics of synchronization in comparison to the case of coupling through a common cavity. We also consider synchronization through a classical channel where light of the master laser is measured phase sensitively and the slave laser is injection locked by feedback and compare to the results achievable by coupling through quantum channels.

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 Dates: 2016-08-052016-09-012016
 Publication Status: Published in print
 Pages: 13 pages, 12 figures
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: arXiv: 1608.01872
DOI: 10.1103/PhysRevA.94.043841
URI: http://arxiv.org/abs/1608.01872
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Title: Physical Review A
  Other : Phys. Rev. A
  Other : Physical Review A: Atomic, Molecular, and Optical Physics
Source Genre: Journal
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Publ. Info: New York, NY : American Physical Society
Pages: - Volume / Issue: 94 Sequence Number: 043841 Start / End Page: - Identifier: ISSN: 1050-2947
CoNE: /journals/resource/954925225012_2