Passive PT -symmetric couplers without complex optical potentials

Lee, YC; Liu, J; Chuang, YL; Hsieh, MH; Lee, RK

Passive PT -symmetric couplers without complex optical potentials

Lee, YC Liu, J Chuang, YL Hsieh, MH

Lee, RK

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Publication Type:: Journal Article
Citation:: Physical Review A - Atomic, Molecular, and Optical Physics, 2015, 92 (5)
Issue Date:: 2015-11-05

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Field	Value	Language
dc.contributor.author	Lee, YC	en_US
dc.contributor.author	Liu, J	en_US
dc.contributor.author	Chuang, YL	en_US
dc.contributor.author	Hsieh, MH https://orcid.org/0000-0002-3396-8427	en_US
dc.contributor.author	Lee, RK	en_US
dc.date.issued	2015-11-05	en_US
dc.identifier.citation	Physical Review A - Atomic, Molecular, and Optical Physics, 2015, 92 (5)	en_US
dc.identifier.issn	1050-2947	en_US
dc.identifier.uri	http://hdl.handle.net/10453/43734
dc.description.abstract	© 2015 American Physical Society. In addition to the implementation of parity-time-(PT-) symmetric optical systems by carefully and actively controlling the gain and loss, we show that a 2×2 PT-symmetric Hamiltonian has a unitarily equivalent representation without complex optical potentials in the resulting optical coupler. Through the Naimark dilation in operator algebra, passive PT-symmetric couplers can thus be implemented with a refractive index of real values and asymmetric coupling coefficients. This opens up the possibility to implement general PT-symmetric systems with state-of-the-art asymmetric slab waveguides, dissimilar optical fibers, or cavities with chiral mirrors.	en_US
dc.relation	http://purl.org/au-research/grants/arc/FT140100574
dc.relation.ispartof	Physical Review A - Atomic, Molecular, and Optical Physics	en_US
dc.relation.isbasedon	10.1103/PhysRevA.92.053815	en_US
dc.subject.classification	General Physics	en_US
dc.title	Passive PT -symmetric couplers without complex optical potentials	en_US
dc.type	Journal Article
utslib.citation.volume	5	en_US
utslib.citation.volume	92	en_US
utslib.for	080203 Computational Logic and Formal Languages	en_US
utslib.for	0206 Quantum Physics	en_US
utslib.for	01 Mathematical Sciences	en_US
utslib.for	02 Physical Sciences	en_US
utslib.for	03 Chemical Sciences	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Strength - QSI - Centre for Quantum Software and Information
utslib.copyright.status	open_access
pubs.issue	5	en_US
pubs.publication-status	Published	en_US
pubs.volume	92	en_US

Abstract:

© 2015 American Physical Society. In addition to the implementation of parity-time-(PT-) symmetric optical systems by carefully and actively controlling the gain and loss, we show that a 2×2 PT-symmetric Hamiltonian has a unitarily equivalent representation without complex optical potentials in the resulting optical coupler. Through the Naimark dilation in operator algebra, passive PT-symmetric couplers can thus be implemented with a refractive index of real values and asymmetric coupling coefficients. This opens up the possibility to implement general PT-symmetric systems with state-of-the-art asymmetric slab waveguides, dissimilar optical fibers, or cavities with chiral mirrors.

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http://hdl.handle.net/10453/43734