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混合电路腔量子电力学与微机械共振器
J-M Pirkkalainen1, S U Cho, Jian Li
1Low Temperature Laboratory, Aalto University, PO Box 15100, FI-00076 Aalto, Finland. juha.pirkkalainen@aalto.fi
Nature
|February 15, 2013
概括
研究人员将超导量子比特与微机械共振器集成,创建了一个混合系统. 这个系统使量子比特和声子之间能够连贯地传输量子信息,为量子接口铺平了道路.
科学领域:
- 量子物理学的量子物理学
- 固态物理 固态物理
- 量子信息科学是一种量子信息科学.
背景情况:
- 混合量子系统,结合不同的自由度,如空腔量子电动力学和被困离子,对于基本物理学和量子信息控制至关重要.
- 将长寿命原子状态与超导电路相结合,为量子技术提供了一个有前途的途径.
研究的目的:
- 通过将超导电晶体量子比特连接到微机械共振器,将电路腔量子电力学与声子集成.
- 研究由此产生的混合电机系统作为量子接口的模型和强合的基本研究.
主要方法:
- 在微机械共振器中,将超导超声量子比特连接到微波腔和声模式.
- 测量声子斯塔克转移和量子比特光谱线分裂成运动侧带.
- 通过侧带拉比振荡观察时间域中的连贯量子态转换.
主要成果:
- 证明了一种超导量子比特与微波光子和机械声子相互作用,作为一个与两个不同的空洞合的原子.
- 观测并测量了声子的Stark转移和运动侧带,表明穿着电机械状态之间的过渡.
- 实现了量子比特激发的连贯转换为声子,通过侧带拉比振荡证明了这一点.
结论:
- 开发的混合系统可以作为探索强联网模式和潜在量子接口的模型.
- 这种系统可以使量子信息存储在长寿命的声子状态中,并促进与光学光子的合.
- 这些发现有助于对混合量子系统及其在量子技术中的应用的基本理解.
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