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Nondissipative non-Hermitian dynamics and exceptional points in coupled optical parametric oscillators

Roy, Arkadev and Jahani, Saman and Guo, Qiushi and Dutt, Avik and Fan, Shanhui and Miri, Mohammad-Ali and Marandi, Alireza (2021) Nondissipative non-Hermitian dynamics and exceptional points in coupled optical parametric oscillators. Optica, 8 (3). pp. 415-421. ISSN 2334-2536.

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Engineered non-Hermitian systems featuring exceptional points (EPs) can lead to a host of extraordinary phenomena in diverse fields ranging from photonics, acoustics, opto-mechanics, and electronics to atomic physics. In optics, non-Hermitian dynamics are typically realized using dissipation and phase-insensitive gain accompanied by unavoidable fluctuations. Here, we introduce non-Hermitian dynamics of coupled optical parametric oscillators (OPOs) arising from phase-sensitive amplification and de-amplification, and show their distinct advantages over conventional non-Hermitian systems relying on laser gain and loss. OPO-based non-Hermitian systems can benefit from the instantaneous nature of the parametric gain, noiseless phase-sensitive amplification, and rich quantum and classical nonlinear dynamics. We show that two coupled OPOs can exhibit spectral anti-parity-time (anti-PT) symmetry and a EP between its degenerate and nondegenerate operation regimes. To demonstrate the distinct potentials of the coupled OPO system compared to conventional non-Hermitian systems, we present higher-order EPs with two OPOs, tunable Floquet EPs in a reconfigurable dynamic non-Hermitian system, and the generation of a squeezed vacuum around EPs, all of which are not easy to realize in other non-Hermitian platforms. We believe our results show that coupled OPOs are an outstanding non-Hermitian setting with unprecedented opportunities to realize nonlinear dynamical systems for enhanced sensing and quantum information processing.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Jahani, Saman0000-0003-4831-2276
Dutt, Avik0000-0002-6064-4356
Fan, Shanhui0000-0002-0081-9732
Miri, Mohammad-Ali0000-0003-3247-4596
Marandi, Alireza0000-0002-0470-0050
Alternate Title:Non-Dissipative Non-Hermitian Dynamics and Exceptional Points in Coupled Optical Parametric Oscillators
Additional Information:© 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement. Received 20 November 2020; revised 5 February 2021; accepted 5 February 2021 (Doc. ID 415569); published 18 March 2021. Funding: National Science Foundation (1846273, 1918549); Army Research Office (W911NF-18-1-0285); U.S. Department of Defense (N00014-17-1-3030). The authors wish to thank NTT Research for their financial and technical support. The authors declare no conflicts of interest.
Funding AgencyGrant Number
Army Research Office (ARO)W911NF-18-1-0285
Office of Naval Research (ONR)N00014-17-1-3030
Issue or Number:3
Record Number:CaltechAUTHORS:20210429-144554359
Persistent URL:
Official Citation:Arkadev Roy, Saman Jahani, Qiushi Guo, Avik Dutt, Shanhui Fan, Mohammad-Ali Miri, and Alireza Marandi, "Nondissipative non-Hermitian dynamics and exceptional points in coupled optical parametric oscillators," Optica 8, 415-421 (2021)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:108890
Deposited By: George Porter
Deposited On:29 Apr 2021 22:44
Last Modified:06 May 2021 22:55

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