Details
| Original language | English |
|---|---|
| Article number | 043841 |
| Journal | Physical Review A |
| Volume | 94 |
| Issue number | 4 |
| Publication status | Published - 21 Oct 2016 |
Abstract
Superradiant lasers based on atomic ensembles exhibiting ultranarrow 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 and 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. [M. Xu, D. A. Tieri, E. C. Fine, J. K. Thompson, and M. J. Holland, Phys. Rev. Lett. 113, 154101 (2014).PRLTAO0031-900710.1103/PhysRevLett.113.154101] and experimentally observed by Weiner et al. (J. M. Weiner, arXiv:1503.06464). 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.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Atomic and Molecular Physics, and Optics
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In: Physical Review A, Vol. 94, No. 4, 043841, 21.10.2016.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Synchronization of active atomic clocks via quantum and classical channels
AU - Roth, Alexander
AU - Hammerer, Klemens
PY - 2016/10/21
Y1 - 2016/10/21
N2 - Superradiant lasers based on atomic ensembles exhibiting ultranarrow 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 and 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. [M. Xu, D. A. Tieri, E. C. Fine, J. K. Thompson, and M. J. Holland, Phys. Rev. Lett. 113, 154101 (2014).PRLTAO0031-900710.1103/PhysRevLett.113.154101] and experimentally observed by Weiner et al. (J. M. Weiner, arXiv:1503.06464). 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.
AB - Superradiant lasers based on atomic ensembles exhibiting ultranarrow 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 and 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. [M. Xu, D. A. Tieri, E. C. Fine, J. K. Thompson, and M. J. Holland, Phys. Rev. Lett. 113, 154101 (2014).PRLTAO0031-900710.1103/PhysRevLett.113.154101] and experimentally observed by Weiner et al. (J. M. Weiner, arXiv:1503.06464). 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.
UR - http://www.scopus.com/inward/record.url?scp=84992758996&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.94.043841
DO - 10.1103/PhysRevA.94.043841
M3 - Article
AN - SCOPUS:84992758996
VL - 94
JO - Physical Review A
JF - Physical Review A
SN - 2469-9926
IS - 4
M1 - 043841
ER -