A Caltech Library Service

Quantum control of phase fluctuations in semiconductor lasers

Santis, Christos T. and Vilenchik, Yaakov and Satyan, Naresh and Rakuljic, George and Yariv, Amnon (2018) Quantum control of phase fluctuations in semiconductor lasers. Proceedings of the National Academy of Sciences of the United States of America, 115 (34). E7896-E7904. ISSN 0027-8424. PMCID PMC6112747.

[img] PDF - Published Version
Creative Commons Attribution Non-commercial No Derivatives.


Use this Persistent URL to link to this item:


Few laser systems allow access to the light–emitter interaction as versatile and direct as that afforded by semiconductor lasers. Such a level of access can be exploited for the control of the coherence and dynamic properties of the laser. Here, we demonstrate, theoretically and experimentally, the reduction of the quantum phase noise of a semiconductor laser through the direct control of the spontaneous emission into the laser mode, exercised via the precise and deterministic manipulation of the optical mode’s spatial field distribution. Central to the approach is the recognition of the intimate interplay between spontaneous emission and optical loss. A method of leveraging and “walking” this fine balance to its limit is described. As a result, some two orders of magnitude reduction in quantum noise over the state of the art in semiconductor lasers, corresponding to a minimum linewidth of 1 kHz, is demonstrated. Further implications, including an additional order-of-magnitude enhancement in effective coherence by way of control of the relaxation oscillation resonance frequency and enhancement of the intrinsic immunity to optical feedback, highlight the potential of the proposed concept for next-generation, integrated coherent systems.

Item Type:Article
Related URLs:
URLURL TypeDescription CentralArticle
Santis, Christos T.0000-0001-8636-1613
Additional Information:© 2018 the Author(s). Published by PNAS. This open access article is distributed under Creative Commons Attribution-NonCommercial-NoDerivatives License 4.0 (CC BY-NC-ND). Contributed by Amnon Yariv, July 3, 2018 [sent for review April 19, 2018; reviewed by Mordechai (Moti) Segev and Eli Yablonovich]. Published ahead of print August 7, 2018. We thank the Kavli Nanoscience Institute at Caltech for critical support and infrastructure. This work was supported by the Army Research Office and the Defense Advanced Research Projects Agency. Author contributions: C.T.S., Y.V., N.S., G.R., and A.Y. designed research; C.T.S., Y.V., and N.S. performed research; C.T.S., Y.V., and N.S. analyzed data; and C.T.S. and A.Y. wrote the paper. Reviewers: M.S., Technion-Israel Institute of Technology; and E.Y., University of California, Berkeley. The authors declare no conflict of interest.
Group:Kavli Nanoscience Institute
Funding AgencyGrant Number
Army Research Office (ARO)UNSPECIFIED
Defense Advanced Research Projects Agency (DARPA)UNSPECIFIED
Subject Keywords:semiconductor laser; spontaneous emission; temporal coherence; phase noise; optical resonator
Issue or Number:34
PubMed Central ID:PMC6112747
Record Number:CaltechAUTHORS:20180807-103958205
Persistent URL:
Official Citation:Quantum control of phase fluctuations in semiconductor lasers Christos T. Santis, Yaakov Vilenchik, Naresh Satyan, George Rakuljic, Amnon Yariv Proceedings of the National Academy of Sciences Aug 2018, 115 (34) E7896-E7904; DOI: 10.1073/pnas.1806716115
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:88621
Deposited By: Tony Diaz
Deposited On:07 Aug 2018 18:10
Last Modified:03 Oct 2019 20:08

Repository Staff Only: item control page