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Observation of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi mathvariant="script">P</mml:mi><mml:mi mathvariant="script">T</mml:mi></mml:math>-Symmetry Breaking in Complex Optical Potentials
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Abstract
In 1998, Bender and Boettcher found that a wide class of Hamiltonians, even though non-Hermitian, can still exhibit entirely real spectra provided that they obey parity-time requirements or PT symmetry. Here we demonstrate experimentally passive PT-symmetry breaking within the realm of optics. This phase transition leads to a loss induced optical transparency in specially designed pseudo-Hermitian guiding potentials.
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The record
- Venue
- Physical Review Letters
- Topic
- Quantum Mechanics and Non-Hermitian Physics
- Field
- Physics and Astronomy
- Canadian institutions
- Université de SherbrookeInstitut National de la Recherche Scientifique
- Funders
- —
- Keywords
- Hermitian matrixPhysicsSymmetry (geometry)Symmetry breakingAlgorithmQuantum mechanicsComputer scienceMathematicsGeometry
- Has abstract in OpenAlex
- yes