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- W3045085655 abstract "Spontaneous symmetry breaking and formation of self-organized structures in nonlinear systems are intriguing and important phenomena in nature. Advancing such research to new nonlinear optical regimes is of much interest for both fundamental physics and practical applications. Here we propose a scheme to realize optical pattern formation in a cold Rydberg atomic gas via electromagnetically induced transparency. We show that, by coupling two Rydberg states with a microwave field (microwave dressing), the nonlocal Kerr nonlinearity of the Rydberg gas can be enhanced significantly and may be tuned actively. Based on such nonlocal Kerr nonlinearity, we demonstrate that a plane-wave state of probe laser field can undergo a modulation instability (MI) and hence spontaneous symmetry breaking, which may result in the emergence of various self-organized optical patterns. Especially, we find that a hexagonal lattice pattern (which is the only optical pattern when the microwave dressing is absent) may develop into several types of square lattice ones when the microwave dressing is applied; moreover, as a outcome of the MI the formation of nonlocal optical solitons is also possible in the system. Different from earlier studies, the optical patterns and nonlocal optical solitons found here can be flexibly manipulated by adjusting the effective probe-field intensity, nonlocality degree of the Kerr nonlinearity, and the strength of the microwave field. Our work opens a route for versatile controls of self-organizations and structural phase transitions of laser light, which may have potential applications in optical information processing and transmission." @default.
- W3045085655 created "2020-07-29" @default.
- W3045085655 creator A5045231651 @default.
- W3045085655 creator A5070336592 @default.
- W3045085655 creator A5086951898 @default.
- W3045085655 date "2020-08-17" @default.
- W3045085655 modified "2023-09-26" @default.
- W3045085655 title "Structural phase transitions of optical patterns in atomic gases with microwave-controlled Rydberg interactions" @default.
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- W3045085655 doi "https://doi.org/10.1103/physreva.102.023519" @default.
- W3045085655 hasPublicationYear "2020" @default.
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