Abstract
We demonstrate the flexible tunability of excitation transport in Rydberg atoms,under the interplay of controlled dissipation and interaction-induced synthetic flux.Considering a minimum four-site setup,i.e.,a triangular configuration with an additional output site,we study the transport of a single excitation,injected into a vertex of the triangle,through the structure.While the long-range dipole-dipole interactions between the Rydberg atoms lead to geometry-dependent Peierls phases in the hopping amplitudes of excitations,we further introduce on-site dissipation to a vertex of the triangle.As a result,both the chirality and destination of the transport can be manipulated through the flux and dissipation.In particular,we illustrate a parameter regime where our Rydberg-ring structure may serve as a switch for transporting the injected excitation through to the output site.The underlying mechanism is then analyzed by studying the chiral trajectory of the excitation and the time-dependent dissipation.The switchable excitation transport reported here offers a flexible tool for quantum control in Rydberg atoms,and holds interesting potentials for applications in quantum simulation and quantum information.
维普
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