The embodiment of the present invention provides a phase shifter, a quantum logic gate device, an optical quantum computing device and a phase shifting method. The phase shifter consists of an optical resonator and a quantum dot. The resonant frequency of the optical resonator is_c. The quantum dot is located in the optical resonator. The transition frequency of the quantum dot is_x. The quantum dot and the optical resonator are coupled to obtain a coupling system. The transition energy difference of the coupling system is determined by_c, _x and the coupling strength g of the quantum dot and the optical resonator. _x is set up to make the coupling system. The transition energy difference of the system is the same as that of one photon or two photons input by the coupled system. The embodiment of the present invention can realize the phase inversion of quantum states by adjusting the transition frequency of quantum dots.
【技术实现步骤摘要】
【国外来华专利技术】PCT国内申请,说明书已公开。
【技术保护点】
PCT国内申请,权利要求书已公开。
【技术特征摘要】
【国外来华专利技术】PCT国内申请,...
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