Parity–Time Symmetry Synthetic Lasers: Physics and Devices
Source abstract
Abstract
Abstract The invention of the laser has revolutionized modern science and engineering as well as our daily lives. Recently, a new class of lasers based on concepts borrowed from parity–time symmetry in quantum mechanics has emerged. Parity–time symmetry, initially applied to condensed matter systems, extends canonical quantum theory to non‐Hermitian quantum theory. The experimental exploration of parity–time symmetry in electronics is challenging; so by analogy, such concept is introduced in photonics where flexibility exists in realizing non‐Hermitian eigenstates involving optical gain and loss. Lasers intrinsically involve both gain and loss, which makes them the natural candidates to explore and exploit parity–time symmetry in photonics. Recent studies have demonstrated various novel laser devices based on parity–time symmetry, which show unique properties such as single mode lasing, chiral mode lasing, and exceptional point enhanced sensing. In this review, the fundamentals are introduced and recent advances in parity–time symmetric laser devices are discussed, furthermore an outlook on this emergent field is provided.
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Research context
OpenAlex topics: Quantum Mechanics and Non-Hermitian Physics · Advanced Fiber Laser Technologies · Mechanical and Optical Resonators
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
State Key Lab for Mesoscopic Physics and School of Physics Peking University Beijing 100871 China
Department of Physics and Astronomy College of Staten Island CUNY Staten Island New York NY 10314 USA
the Graduate Center CUNY New York NY 10016 USA
School of Electrical Engineering and Computer Science (EECS) University of Ottawa 25 Templeton Street Ottawa Ottawa Ontario K1N 6N5 Canada
Department of Physics University of Ottawa 150 Louis Pasteur Street Ottawa Ontario K1N 6N5 Canada
Centre for Research in Photonics University of Ottawa 25 Templeton Street Ottawa Ontario K1N 6N5 Canada
Collaborative Innovation Center of Quantum Matter Beijing 100871 China
Nano‐optoelectronics Frontier Center of Ministry of Education (NFC‐MOE) Peking University Beijing 100871 China
Funding
National Natural Science Foundation of China · Natural Science Foundation of Beijing Municipality
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