期刊
PHYSICAL REVIEW LETTERS
卷 110, 期 23, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.110.234101
关键词
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资金
- AFOSR [FA 9550-10-1-0433]
- NSF [ECCS-1128571]
- Wesleyan Faculty/Student Internship grants
- Div Of Electrical, Commun & Cyber Sys
- Directorate For Engineering [1128520, 1128571] Funding Source: National Science Foundation
A mechanism for asymmetric transport which is based on parity-time-symmetric nonlinearities is presented. We show that in contrast to the case of conservative nonlinearities, an increase of the complementary conductance strength leads to a simultaneous increase of asymmetry and transmittance intensity. We experimentally demonstrate the phenomenon using a pair of coupled Van der Pol oscillators as a reference system, each with complementary anharmonic gain and loss conductances, connected to transmission lines. An equivalent optical setup is also proposed.
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