Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Chiral Modes at Exceptional Points in Exciton-Polariton Quantum Fluids. / Gao, T.; Li, G.; Estrecho, E.; Liew, T. C.H.; Comber-Todd, D.; Nalitov, A.; Steger, M.; West, K.; Pfeiffer, L.; Snoke, D. W.; Kavokin, A. V.; Truscott, A. G.; Ostrovskaya, E. A.
в: Physical Review Letters, Том 120, № 6, 065301, 09.02.2018.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Chiral Modes at Exceptional Points in Exciton-Polariton Quantum Fluids
AU - Gao, T.
AU - Li, G.
AU - Estrecho, E.
AU - Liew, T. C.H.
AU - Comber-Todd, D.
AU - Nalitov, A.
AU - Steger, M.
AU - West, K.
AU - Pfeiffer, L.
AU - Snoke, D. W.
AU - Kavokin, A. V.
AU - Truscott, A. G.
AU - Ostrovskaya, E. A.
PY - 2018/2/9
Y1 - 2018/2/9
N2 - We demonstrate the generation of chiral modes-vortex flows with fixed handedness in exciton-polariton quantum fluids. The chiral modes arise in the vicinity of exceptional points (non-Hermitian spectral degeneracies) in an optically induced resonator for exciton polaritons. In particular, a vortex is generated by driving two dipole modes of the non-Hermitian ring resonator into degeneracy. Transition through the exceptional point in the space of the system's parameters is enabled by precise manipulation of real and imaginary parts of the closed-wall potential forming the resonator. As the system is driven to the vicinity of the exceptional point, we observe the formation of a vortex state with a fixed orbital angular momentum (topological charge). This method can be extended to generate higher-order orbital angular momentum states through coalescence of multiple non-Hermitian spectral degeneracies. Our Letter demonstrates the possibility of exploiting nontrivial and counterintuitive properties of waves near exceptional points in macroscopic quantum systems.
AB - We demonstrate the generation of chiral modes-vortex flows with fixed handedness in exciton-polariton quantum fluids. The chiral modes arise in the vicinity of exceptional points (non-Hermitian spectral degeneracies) in an optically induced resonator for exciton polaritons. In particular, a vortex is generated by driving two dipole modes of the non-Hermitian ring resonator into degeneracy. Transition through the exceptional point in the space of the system's parameters is enabled by precise manipulation of real and imaginary parts of the closed-wall potential forming the resonator. As the system is driven to the vicinity of the exceptional point, we observe the formation of a vortex state with a fixed orbital angular momentum (topological charge). This method can be extended to generate higher-order orbital angular momentum states through coalescence of multiple non-Hermitian spectral degeneracies. Our Letter demonstrates the possibility of exploiting nontrivial and counterintuitive properties of waves near exceptional points in macroscopic quantum systems.
KW - BOSE-EINSTEIN CONDENSATION
KW - SEMICONDUCTOR MICROCAVITY
KW - QUANTIZED VORTICES
KW - DEGENERACIES
KW - PHYSICS
KW - OPTICS
KW - LIGHT
KW - BEAMS
UR - http://www.scopus.com/inward/record.url?scp=85041822913&partnerID=8YFLogxK
UR - http://www.mendeley.com/research/chiral-modes-exceptional-points-excitonpolariton-quantum-fluids
U2 - 10.1103/PhysRevLett.120.065301
DO - 10.1103/PhysRevLett.120.065301
M3 - Article
AN - SCOPUS:85041822913
VL - 120
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 6
M1 - 065301
ER -
ID: 36004467