A non-degenerate polarization-entangled photon pair generation device (1) that efficiently and easily generates non-degenerate polarization-entangled photon pairs includes: a quantum-entangled photon pair generator (2) including a single crystal in which periodically poled structures (3a, 3b) having different periods are formed; and a light radiating unit (4) for entering light into the quantum-entangled photon pair generator (2) such that the light passes through the periodically poled structure (3a) and then through the periodically poled structure (3b). A period of the periodically poled structure (3a) is different from a period of the periodically poled structure (3b) such that a parabola indicative of a relation between an emission angle and a wavelength of a polarized photon emitted based on light incident on the periodically poled structure (3a) comes into contact with a parabola indicative of a relation between an emission angle and a wavelength of polarized photon emitted based on light incident on the periodically poled structure (3b), within an allowable range under a phase matching condition.
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机译：一种非简并偏振纠缠光子对生成设备（ 1 ），可以高效且容易地生成非简并偏振纠缠光子对，包括：量子纠缠光子对生成器（ 2 ）包括单晶，其中周期性极化结构（ 3 a， 3 b ）具有不同的周期形成;以及光辐射单元（ 4 ），用于使光进入量子纠缠光子对生成器（ 2 ），从而使光穿过周期性极化的结构（ 3 a ），然后通过周期性极化的结构（ 3 b ）。周期性极化结构的周期（ 3 a ）不同于周期性极化结构的周期（ 3 b I>），以表示基于入射在周期性极化结构（ 3 a ）上的光的出射角与偏振光子的波长之间的关系的抛物线与抛物线接触，该抛物线表示入射角与基于入射到周期性极化结构（ 3 b ）上的光的偏振光子的波长之间的关系相位匹配条件下的允许范围。
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