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发明授权
CN110297376B 一种稳定的连续变量量子纠缠源产生装置 有权

一种稳定的连续变量量子纠缠源产生装置
摘要：
本发明属于连续变量非经典光场产生设备技术领域，具体涉及一种稳定的连续变量量子纠缠源产生装置，包括单频激光器、电光相位调制器、第一简并光学参量放大器、第二简并光学参量放大器、第一腔长和相位锁定系统、第二腔长和相位锁定系统、两束压缩光相位锁定系统和纠缠光探测系统；所述的电光相位调制器中的电光晶体为楔形电光晶体，利用楔形的电光晶体作为相位调制晶体，减小了相位调制过程中引入的剩余幅度调制，提高了腔长和相位锁定的稳定性和准确性，解决了现有纠缠源稳定性差的问题，具有稳定可靠、结构简单、实用性强等优点。
摘要（英）：

The invention belongs to the technical field of continuous variable non-classical optical field generating equipment and particularly relates to a stable continuous variable quantum entanglement source generating device comprising a single-frequency laser, an electro-optical phase modulator, a first degenerate optical parametric amplifier, a second degenerate optical parametric amplifier, a firstcavity length and phase locking system, a second cavity length and phase locking system, a two-compressed beam optical phase locking system and an entanglement light detection system; the electro-optical crystal in the electro-optical phase modulator is a wedge-shaped electro-optical crystal, the wedge-shaped electro-optical crystal is used as a phase modulation crystal, so that residual amplitudemodulation introduced in the phase modulation process is reduced, the stability and accuracy of the cavity length and phase locking are improved, and the problem of poor stability of the existing entanglement source is solved, and the device in the invention has the advantages of being stable and reliable, simple in structure, high in practicability and the like.

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