一个2Gbps低SWaP量子随机数发生器,用于卫星应用的光子集成电路
Oliver M Crampton1,2, Toby J Dowling1, Thomas Roger1
1Toshiba Europe Limited, Cambridge, UK.
概括
我们使用集成光子学开发了一个紧的,低功耗的量子随机数发生器 (QRNG). 这种高速QRNG非常适合资源有限的应用,例如基于空间的量子密钥分配.
科学领域:
- 量子光学就是一个量子光学.
- 综合光子学 综合光子学
- 量子信息科学是一种量子信息科学.
背景情况:
- 量子随机数生成器 (QRNG) 对于安全的通信至关重要.
- 现有的QRNG通常面临大小,功耗和速度的限制.
- 综合光子解决方案提供了小型化和效率的潜力.
研究的目的:
- 为了引入一个新的,低尺寸,重量和功率 (SWaP) 量子随机数发生器 (QRNG).
- 展示一个实用的QRNG,适用于资源有限的环境,例如基于空间的量子密钥分布 (QKD).
主要方法:
- 使用了紧的集成光子不对称的马赫-泽恩德干扰仪 (AMZIs).
- 在两个增益开关激光器中使用的相扩散干扰了芯片AMZI内部.
- 用时钟比较器取代高位模拟数字转换器,并使用XOR操作来减少复杂性和功率.
主要成果:
- 实现了一个QRNG,其低空头功耗为7.93W.
- 证明了快速随机数生成,速度高达2 Gbps.
- 在实时中成功播种了一个自由空间诱状态量子密钥分布系统.
结论:
- 开发的QRNG为低功耗,高比特率的随机数生成提供了一个实用的解决方案.
- 这一进步对实际QRNG实施具有重要意义,特别是在基于太空的QKD中.
- 综合光子方法使高效和紧的QRNG可用于苛刻的应用.
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