自旋-轨道角动量耦合的混合纠缠光子对产生结构

• Format: Patent
• Language: Chinese
• Published: 22.12.2023
• Subjects: DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

本实用新型公开了自旋-轨道角动量耦合的混合纠缠光子对产生结构，包括通过量子信道依次连接的泵浦光源、光衰减片、起偏器、自发参量下转换装置、偏振分束器、第一反射镜和第二反射镜，第二反射器又通过量子信道反馈到自发参量下转换装置，所述自发参量下转换装置用于将入射的单光子进行第一型关联的自发参量下转换，产生相互纠缠的自旋-轨道角动量光子对。本实用新型通过引用自发参量下转换装置产生相互纠缠的自旋-轨道角动量光子对，同时配合偏振分束器将未发生转化的单光子通过第一和第二反射器的重新送回自发参量下转换装置处再次进行转化，大大提高了光子对的转化率。