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超导量子比特到光子转导
Mohammad Mirhosseini1,2,3, Alp Sipahigil1,2,3, Mahmoud Kalaee1,2,3,4
1Kavli Nanoscience Institute, Laboratory of Applied Physics, California Institute of Technology, Pasadena, CA, USA.
Nature
|December 28, 2020
概括
研究人员使用纳米机械共振器将超导量子位的微波信号转换为光学光子. 这一突破对于开发量子网络和分布式量子计算至关重要.
科学领域:
- 量子信息科学
- 纳米技术
- 固态物理
背景情况:
- 电到光信号的转换是现代通信的基础.
- 量子网络需要在不同的物理系统之间有效地转换量子状态,例如超导量子位和光子.
- 在超导量子比特的微波到光学转换过程中,
研究的目的:
- 展示从超导量子位 (传送器) 转换成光子的微波激发.
- 建立一个超导量子处理器与光学系统的接口方法.
- 为混合量子网络和分布式量子计算奠定基础.
主要方法:
- 使用中间的纳米力学共振器来弥合微波和光学领域.
- 使用压电相互作用将量子位的微波激发转化为声子 (机械振动的量子).
- 使用辐射压力将声子转换为光子,通过单光子检测检测.
主要成果:
- 已经成功地将量子比特的激发转化为光子.
- 通过检测光纤发出的单个光子来观察量子拉比振荡.
- 验证了光学信号的量子性质.
结论:
- 通过将超导量子比特激发转化为光学光子, 实现了量子转导的重要里程碑.
- 开发的量子传感器有可能实现混合量子网络和分布式量子计算机.
- 设备设计和测量设置的进一步改进可以提高这项技术的效率和适用性.
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