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Title: Controlling electric, magnetic, and chiral dipolar emission with PT-symmetric potentials

Journal Article · · Physical Review. B, Condensed Matter and Materials Physics

We investigate the effect of parity-time (PT) symmetric optical potentials on the radiation of achiral and chiral dipole sources. Two properties unique to PT-symmetric potentials are observed. First, the dipole can be tuned to behave as a strong optical emitter or absorber based on the non-Hermiticity parameter and the dipole location. Second, exceptional points give rise to new system resonances that lead to orders-of-magnitude enhancements in the dipolar emitted or absorbed power. Utilizing these properties, we show that enantiomers of chiral molecules near PT-symmetric metamaterials exhibit a 4.5-fold difference in their emitted power and decay rate. Furthermore, the results of this work could enable new atom-cavity interactions for quantum optics, as well as all-optical enantioselective separation.

Research Organization:
Energy Frontier Research Centers (EFRC) (United States). Light-Material Interactions in Energy Conversion (LMI)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0001293; FA9550-15-1-0006; DMR-1151231
OSTI ID:
1370742
Alternate ID(s):
OSTI ID: 1183793
Journal Information:
Physical Review. B, Condensed Matter and Materials Physics, Vol. 91, Issue 24; Related Information: LMI partners with California Institute of Technology (lead); Harvard University; University of Illinois, Urbana-Champaign; Lawrence Berkeley National Laboratory; ISSN 1098-0121
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 24 works
Citation information provided by
Web of Science

References (37)

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Cited By (12)

Origami-Based Reconfigurable Metamaterials for Tunable Chirality journal May 2017
Kirigami metamaterials for reconfigurable toroidal circular dichroism journal September 2018
Optical Chirality of Time-Harmonic Wavefields for Classification of Scatterers journal June 2018
Optical chiral metamaterials: a review of the fundamentals, fabrication methods and applications journal September 2016
Non-zero helicity extinction in light scattered from achiral (or chiral) small particles located at points of null incident helicity density journal May 2017
Chiral optical fields: a unified formulation of helicity scattered from particles and dichroism enhancement journal March 2017
Fundamentals and model of resonance helicity and energy transfer between two magnetoelectric chiral particles journal August 2019
Nanoantennas with balanced gain and loss journal February 2020
Chiral optical fields: A unified formulation of helicity scattered from particles and dichroism enhancement text January 2016
Non-zero helicity extinction in light scattered from achiral (or chiral) small particles located at points of null incident helicity density text January 2016
Kirigami Metamaterials for Reconfigurable Toroidal Circular Dichroism preprint January 2018
Fundamentals and model of resonance helicity and energy transfer between two magnetoelectric chiral particles text January 2018

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