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- W4385706114 abstract "Abstract We report on the experimental realization and characterization of an exciton-polariton qubit prototype. In our system, a Bose-Einstein condensate of semiconductor exciton-polaritons is confined by a spatially-patterned pump laser in an annular trap that supports energy-degenerate circulating currents of the polariton superfluid. Using non-invasive temporal interference measurements, we observe coherent oscillations between a pair of counter-circulating superfluid vortex states of the polaritons coupled by elastic scattering off the laser-imprinted potential. The qubit basis states correspond to the symmetric and antisymmetric superpositions of the two vortex states forming orthogonal double-lobe spatial wavefunctions. By engineering the potential, we tune the coupling and coherent oscillations between the two circulating current states, control the energies of the qubit basis states and thereby initialize the qubit in the desired state. The dynamics of the system is accurately reproduced by our theoretical two-state model, and we discuss potential avenues to achieve complete control over our polaritonic qubit and implement controllable interactions and quantum gates between such qubits." @default.
- W4385706114 created "2023-08-10" @default.
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- W4385706114 date "2023-08-09" @default.
- W4385706114 modified "2023-09-27" @default.
- W4385706114 title "Superfluid Polaritonic Qubit in an Annular Trap" @default.
- W4385706114 doi "https://doi.org/10.21203/rs.3.rs-3128328/v1" @default.
- W4385706114 hasPublicationYear "2023" @default.
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