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Quantum diffusion of microcavity solitons

Bao, Chengying and Suh, Myoung-Gyun and Shen, Boqiang and Şafak, Kemal and Dai, Anan and Wang, Heming and Wu, Lue and Yuan, Zhiquan and Yang, Qi-Fan and Matsko, Andrey B. and Kärtner, Franz X. and Vahala, Kerry J. (2021) Quantum diffusion of microcavity solitons. Nature Physics, 17 (4). pp. 462-466. ISSN 1745-2473. doi:10.1038/s41567-020-01152-5.

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Coherently pumped (Kerr) solitons in an ideal optical microcavity are expected to undergo random quantum motion that determines fundamental performance limits in applications of the soliton microcombs. Here this random walk and its impact on Kerr soliton timing jitter are studied experimentally. The quantum limit is discerned by measuring the relative position of counter-propagating solitons. Their relative motion features weak interactions and also presents common-mode suppression of technical noise, which typically hides the quantum fluctuations. This is in contrast to co-propagating solitons, which are found to have relative timing jitter well below the quantum limit of a single soliton on account of strong correlation of their mutual motion. Good agreement is found between theory and experiment. The results establish the fundamental limits to timing jitter in soliton microcombs and provide new insights on multisoliton physics.

Item Type:Article
Related URLs:
URLURL TypeDescription ReadCube access Paper
Suh, Myoung-Gyun0000-0002-9527-0585
Shen, Boqiang0000-0003-0697-508X
Wang, Heming0000-0003-3861-0624
Wu, Lue0000-0002-7503-7057
Yang, Qi-Fan0000-0002-7036-1712
Matsko, Andrey B.0000-0001-9939-9311
Vahala, Kerry J.0000-0003-1783-1380
Additional Information:© 2020 Nature Publishing Group. Received 20 March 2020; Accepted 11 November 2020; Published 25 January 2021. This work is supported by the Air Force Office of Scientific Research (FA9550-18-1-0353) and the Kavli Institute of Nanoscience. C.B. acknowledges a postdoctoral fellowship from the Resnick Institute at Caltech. The work of A.B.M. was carried out at the JPL, Caltech, under a contract with the National Aeronautics and Space Administration. Data availability: The data that support the plots within this paper and other findings of this study are available from the corresponding author upon reasonable request. Code availability: The codes used for this study are available from the corresponding author upon reasonable request. Author Contributions: C.B., K.Ş., A.B.M., F.X.K. and K.J.V. conceived the project. C.B. ran the experiments with assistance from B.S., Z.Y. and Q.-F.Y. M.-G.S., H.W. and L.W. prepared the samples. K.Ş., A.D. and F.X.K. built the BOC. The project was supervised by K.J.V. The authors declare no competing interests. Peer review information: Nature Physics thanks Giovanna Tissoni and the other, anonymous, reviewer(s) for their contribution to the peer review of this work.
Group:Kavli Nanoscience Institute, Resnick Sustainability Institute
Funding AgencyGrant Number
Air Force Office of Scientific Research (AFOSR)FA9550-18-1-0353
Kavli Nanoscience InstituteUNSPECIFIED
Resnick Sustainability InstituteUNSPECIFIED
Subject Keywords:Frequency combs; Nonlinear optics; Solitons
Issue or Number:4
Record Number:CaltechAUTHORS:20200601-095501587
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Official Citation:Bao, C., Suh, MG., Shen, B. et al. Quantum diffusion of microcavity solitons. Nat. Phys. 17, 462–466 (2021).
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:103582
Deposited By: Tony Diaz
Deposited On:01 Jun 2020 18:29
Last Modified:13 Apr 2021 15:55

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