Journal
OPTICS EXPRESS
Volume 31, Issue 23, Pages 38024-38037Publisher
Optica Publishing Group
DOI: 10.1364/OE.504965
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In this study, we propose a method to achieve a strong indirect interaction between distant WGM resonators at room temperature, by exploiting the quantum critical point. The enhanced coupling strength between a WGM resonator and a low-frequency polariton is achieved through virtual excitations mediated by a far-off-resonant low-frequency polariton. This proposal provides a viable approach to building a quantum network based on strongly coupled WGM resonators.
We propose a method to achieve a strong indirect interaction between two distant whispering-gallery-mode (WGM) resonators in a hybrid quantum system at room temperature, even when the distance between them exceeds 40 wavelengths. By exploiting the quantum critical point, we can greatly enhance both the effective damping rate and the coupling strengths between a WGM resonator and a low-frequency polariton. We introduce a large effective frequency detuning to suppress the effective damping rate while maintaining the enhanced coupling strength. The strong indirect interaction between separated WGM resonators is mediated by a far-off-resonant low-frequency polariton through virtual excitations in a process similar to Raman process. This proposal provides a viable approach to building a quantum network based on strongly coupled WGM resonators.
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