【摘要】 研究了由两个V型三能级量子点与表面等离子波导耦合构成的非厄米量子系统中的单向无反射现象.研究表明,通过适当地调节两个量子点的共振波长和量子点与等离子波导之间的耦合强度,在系统的异常点处可获得双带单向无反射,且其双带单向低反射可在较宽的波长范围内实现.更多还原

【Abstract】 We investigate the unidirectional reflectionlessness phenomenon in a non-Hermitian quantum system,which consists of two V-type three-level quantum dots coupled to a surface plasmonic waveguide.The research shows that dual-band unidirectional reflectionlessness can be obtained at exceptional points by appropriately adjusting the resonance wavelengths of two quantum dots and coupling strengths between the quantum dots and plasmonic waveguide.And the dual-band low unidirectional reflection can be realized in the wide range of wavelength.更多还原