Observation of Parity-Time Symmetry in Optically Induced Atomic Lattices
We experimentally demonstrate PT-symmetric optical lattices with periodical gain and loss profiles in a coherently prepared four-level N-type atomic system. By appropriately tuning the pertinent atomic parameters, the onset of PT-symmetry breaking is observed through measuring an abrupt phase-shift...
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| Published in | Physical review letters Vol. 117; no. 12; p. 123601 |
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| Main Authors | , , , , , , , , |
| Format | Journal Article |
| Language | English |
| Published |
United States
16.09.2016
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| Online Access | Get more information |
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| Abstract | We experimentally demonstrate PT-symmetric optical lattices with periodical gain and loss profiles in a coherently prepared four-level N-type atomic system. By appropriately tuning the pertinent atomic parameters, the onset of PT-symmetry breaking is observed through measuring an abrupt phase-shift jump between adjacent gain and loss waveguides. The experimental realization of such a readily reconfigurable and effectively controllable PT-symmetric waveguide array structure sets a new stage for further exploiting and better understanding the peculiar physical properties of these non-Hermitian systems in atomic settings. |
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| AbstractList | We experimentally demonstrate PT-symmetric optical lattices with periodical gain and loss profiles in a coherently prepared four-level N-type atomic system. By appropriately tuning the pertinent atomic parameters, the onset of PT-symmetry breaking is observed through measuring an abrupt phase-shift jump between adjacent gain and loss waveguides. The experimental realization of such a readily reconfigurable and effectively controllable PT-symmetric waveguide array structure sets a new stage for further exploiting and better understanding the peculiar physical properties of these non-Hermitian systems in atomic settings. |
| Author | He, Bing Sheng, Jiteng Zhang, Yanpeng Miri, Mohammad-Ali Christodoulides, Demetrios N Zhang, Zhaoyang Zhang, Yiqi Yang, Liu Xiao, Min |
| Author_xml | – sequence: 1 givenname: Zhaoyang surname: Zhang fullname: Zhang, Zhaoyang organization: Key Laboratory for Physical Electronics and Devices of the Ministry of Education & Shaanxi Key Lab of Information Photonic Technique, Xi'an Jiaotong University, Xi'an 710049, China – sequence: 2 givenname: Yiqi surname: Zhang fullname: Zhang, Yiqi organization: Key Laboratory for Physical Electronics and Devices of the Ministry of Education & Shaanxi Key Lab of Information Photonic Technique, Xi'an Jiaotong University, Xi'an 710049, China – sequence: 3 givenname: Jiteng surname: Sheng fullname: Sheng, Jiteng organization: Department of Physics and Astronomy, The University of Oklahoma, Norman, Oklahoma 73019, USA – sequence: 4 givenname: Liu surname: Yang fullname: Yang, Liu organization: College of Physics, Jilin University, Changchun 130012, China – sequence: 5 givenname: Mohammad-Ali surname: Miri fullname: Miri, Mohammad-Ali organization: CREOL, College of Optics and Photonics, University of Central Florida, Orlando, Florida 32816, USA – sequence: 6 givenname: Demetrios N surname: Christodoulides fullname: Christodoulides, Demetrios N organization: CREOL, College of Optics and Photonics, University of Central Florida, Orlando, Florida 32816, USA – sequence: 7 givenname: Bing surname: He fullname: He, Bing organization: Department of Physics, University of Arkansas, Fayetteville, Arkansas 72701, USA – sequence: 8 givenname: Yanpeng surname: Zhang fullname: Zhang, Yanpeng organization: Key Laboratory for Physical Electronics and Devices of the Ministry of Education & Shaanxi Key Lab of Information Photonic Technique, Xi'an Jiaotong University, Xi'an 710049, China – sequence: 9 givenname: Min surname: Xiao fullname: Xiao, Min organization: National Laboratory of Solid State Microstructures and School of Physics, Nanjing University, Nanjing 210093, China |
| BackLink | https://www.ncbi.nlm.nih.gov/pubmed/27689270$$D View this record in MEDLINE/PubMed |
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