Research output: Contribution to journal › Article › peer-review
Spatial quantization of exciton-polariton condensates in optically induced traps. / Aladinskaia, Ekaterina ; Cherbunin, Roman ; Sedov, Evgeny ; Liubomirov, Alexey ; Kavokin, Kirill ; Khramtsov, Evgeny ; Petrov, Mikhail ; Savvidis, P.G.; Kavokin, Alexey .
In: Physical Review B, Vol. 107, 045302, 11.01.2023.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Spatial quantization of exciton-polariton condensates in optically induced traps
AU - Aladinskaia, Ekaterina
AU - Cherbunin, Roman
AU - Sedov, Evgeny
AU - Liubomirov, Alexey
AU - Kavokin, Kirill
AU - Khramtsov, Evgeny
AU - Petrov, Mikhail
AU - Savvidis, P.G.
AU - Kavokin, Alexey
PY - 2023/1/11
Y1 - 2023/1/11
N2 - We study formation of exciton polariton condensates in pot-like traps created by optical pumping in a planar microcavity with embedded quantum wells. The trap is formed by the repulsive reservoir of incoherent excitons excited by the ring-shaped non-resonant laser beam. Polariton condensates confined in a trapping potential are subject to spatial confinement leading to the energy quantization. We reveal experimentally the discrete spectrum of polariton eigenstates in an optical trap that can be characterised by a pair of quantum numbers: the azimuthal and the radial quantum numbers, that correspond to the number of nodes of the condensate wavefunction in the corresponding directions. The occupation numbers of the eignestates of a polariton condensate are determined by the overlap integral of the condensate wavefunction and the exciton reservoir spatial density distribution. The non-resonant pumping scheme enables engineering the shape and size of the trap, that allows to selectively excite specific superpositions of the eigen-states of a polariton condensate in each experiment. We demonstrate both single and multiple mode polariton lasing in an optical trap.
AB - We study formation of exciton polariton condensates in pot-like traps created by optical pumping in a planar microcavity with embedded quantum wells. The trap is formed by the repulsive reservoir of incoherent excitons excited by the ring-shaped non-resonant laser beam. Polariton condensates confined in a trapping potential are subject to spatial confinement leading to the energy quantization. We reveal experimentally the discrete spectrum of polariton eigenstates in an optical trap that can be characterised by a pair of quantum numbers: the azimuthal and the radial quantum numbers, that correspond to the number of nodes of the condensate wavefunction in the corresponding directions. The occupation numbers of the eignestates of a polariton condensate are determined by the overlap integral of the condensate wavefunction and the exciton reservoir spatial density distribution. The non-resonant pumping scheme enables engineering the shape and size of the trap, that allows to selectively excite specific superpositions of the eigen-states of a polariton condensate in each experiment. We demonstrate both single and multiple mode polariton lasing in an optical trap.
KW - Polariton condensate
KW - Microcavity & microdisk lasers
KW - Quantum rings
UR - https://journals.aps.org/prb/abstract/10.1103/PhysRevB.107.045302
M3 - Article
VL - 107
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 1098-0121
M1 - 045302
ER -
ID: 100543170