期刊
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
卷 107, 期 3, 页码 1005-1010出版社
NATL ACAD SCIENCES
DOI: 10.1073/pnas.0912969107
关键词
entanglement; optical levitation; quantum information
资金
- Gordon and Betty Moore Foundation through Caltech's Center for the Physics of Information
- National Science Foundation [PHY-0803371, PHY-0652914]
- Millikan Postdoctoral Fellowship
- Moore Fellowship
- Austrian Science Fund
- EU
- Army Research Office
- Northrop Grumman Space Technology
- Division Of Physics
- Direct For Mathematical & Physical Scien [0803371] Funding Source: National Science Foundation
Recently, remarkable advances have been made in coupling a number of high-Q modes of nano-mechanical systems to high-finesse optical cavities, with the goal of reaching regimes in which quantum behavior can be observed and leveraged toward new applications. To reach this regime, the coupling between these systems and their thermal environments must be minimized. Here we propose a novel approach to this problem, in which optically levitating a nano-mechanical system can greatly reduce its thermal contact, while simultaneously eliminating dissipation arising from clamping. Through the long coherence times allowed, this approach potentially opens the door to ground-state cooling and coherent manipulation of a single mesoscopic mechanical system or entanglement generation between spatially separate systems, even in room-temperature environments. As an example, we show that these goals should be achievable when the mechanical mode consists of the center-of-mass motion of a levitated nanosphere.
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