量子纠缠
物理
量子力学
量子
统计物理学
计算机科学
作者
Shlomi Kotler,G. A. Peterson,Ezad Shojaee,Florent Lecocq,Katarina Cicak,Alex Kwiatkowski,Shawn Geller,Scott Glancy,Emanuel Knill,R. W. Simmonds,José Aumentado,John Teufel
出处
期刊:Science
[American Association for the Advancement of Science (AAAS)]
日期:2021-05-06
卷期号:372 (6542): 622-625
被引量:192
标识
DOI:10.1126/science.abf2998
摘要
Quantum entanglement of mechanical systems emerges when distinct objects move with such a high degree of correlation that they can no longer be described separately. Although quantum mechanics presumably applies to objects of all sizes, directly observing entanglement becomes challenging as masses increase, requiring measurement and control with a vanishingly small error. Here, using pulsed electromechanics, we deterministically entangle two mechanical drumheads with masses of 70 pg. Through nearly quantum-limited measurements of the position and momentum quadratures of both drums, we perform quantum state tomography and thereby directly observe entanglement. Such entangled macroscopic systems are uniquely poised to serve in fundamental tests of quantum mechanics, enable sensing beyond the standard quantum limit, and function as long-lived nodes of future quantum networks.
科研通智能强力驱动
Strongly Powered by AbleSci AI