公开(公告)号：US20240118586A1

公开(公告)日：2024-04-11

申请号：US18045189

申请日：2022-10-10

申请人： Palo Alto Research Center Incorporated

发明人： Krishnan THYAGARAJAN ,  Krishna THYAGARAJAN

IPC分类号： G02F1/39 ,  G02F1/35

CPC分类号： G02F1/395 ,  G02F1/3548

摘要： An electro-optical modulating device and method that provides efficient control of the nonlinear propagation constant in an optical waveguide are featured. The electro-optical modulating device provides large wavelength tunability of the generated entangled photon pairs in real-time by using an applied external bias voltage. The electro-optical modulating device uses gate-tunable material at locations near the optical waveguide. The application of an external bias voltage creates a variable field-effect which in turn varies the optical dielectric properties of the waveguide. The result is a compact active, highly efficient wavelength-tunable integrated quantum photonic device for tunable entangled photon pair generation using an external bias voltage.