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- J Suh, A J Weinstein, +5 authors K C Schwab
- Science
- 2014

Quantum fluctuations of the light field used for continuous position detection produce stochastic back-action forces and ultimately limit the sensitivity. To overcome this limit, the back-action forces can be avoided by giving up complete knowledge of the motion, and these types of measurements are called "back-action evading" or "quantum nondemolition"… (More)

- E E Wollman, C U Lei, +5 authors K C Schwab
- Science
- 2015

According to quantum mechanics, a harmonic oscillator can never be completely at rest. Even in the ground state, its position will always have fluctuations, called the zero-point motion. Although the zero-point fluctuations are unavoidable, they can be manipulated. Using microwave frequency radiation pressure, we have manipulated the thermal fluctuations of… (More)

- A. J. Weinstein, C. U. Lei, +4 authors K. C. Schwab
- 2014

Quantum electromechanical systems offer a unique opportunity to probe quantum noise properties in macroscopic devices, properties that ultimately stem from Heisenberg’s uncertainty relations. A simple example of this behavior is expected to occur in a microwave parametric transducer, where mechanical motion generates motional sidebands corresponding to the… (More)

- Alessandro Pitanti, Johannes M Fink, +4 authors Oskar Painter
- Optics express
- 2015

We fabricate and characterize a microscale silicon opto-electromechanical system whose mechanical motion is coupled capacitively to an electrical circuit and optically via radiation pressure to a photonic crystal cavity. To achieve large electromechanical interaction strength, we implement an inverse shadow mask fabrication scheme which obtains capacitor… (More)

- Meng-Hsiu Wu, Chan U Lei, Wei-Min Zhang, Heng-Na Xiong
- Optics express
- 2010

In this paper, the non-Markovian dynamics of a microcavity coupled to a waveguide in photonic crystals is studied based on a semi-finite tight binding model. Using the exact master equation, we solve analytically and numerically the general and exact solution of the non-Markovain dynamics for the cavity coupled to the waveguide in different coupling regime.… (More)

- Chan U Lei, Wei-Min Zhang
- 2011

In this paper, we provide a mechanism of decoherence suppression for open quantum systems in general and that for a “Schrödinger cat-like” state in particular, through strong couplings to non-Markovian reservoirs. Different from the usual strategies in the literature of suppressing decoherence by decoupling the system from the environment, here the… (More)

- Alessandro Pitanti, Johannes M. Fink, +5 authors Thomas J. Watson
- 2014

Alessandro Pitanti,1, 2 Johannes M. Fink,1 Amir H. Safavi-Naeini,1 Chan U. Lei,1 Jeff T. Hill,1 Alessandro Tredicucci,2, 3 and Oskar Painter1, ∗ 1Institute for Quantum Information and Matter and Thomas J. Watson, Sr., Laboratory of Applied Physics, California Institute of Technology, Pasadena, CA 91125, USA 2NEST and Istituto Nanoscienze CNR, Scuola Normale… (More)

- C. U. Lei, A. J. Weinstein, +5 authors K. C. Schwab
- 2016

C. U. Lei, A. J. Weinstein, J. Suh, E. E. Wollman, A. Kronwald, F. Marquardt, A. A. Clerk, K. C. Schwab1∗ Applied Physics, California Institute of Technology, Pasadena, CA 91125, USA Korea Research Institute of Standards and Science, Daejeon 305-340, Republic of Korea Friedrich-Alexander-Universität Erlangen-Nürnberg, Staudtstr. 7, D-91058 Erlangen, Germany… (More)

- C U Lei, A J Weinstein, +5 authors K C Schwab
- Physical review letters
- 2016

We use a reservoir engineering technique based on two-tone driving to generate and stabilize a quantum squeezed state of a micron-scale mechanical oscillator in a microwave optomechanical system. Using an independent backaction-evading measurement to directly quantify the squeezing, we observe 4.7±0.9 dB of squeezing below the zero-point level surpassing… (More)

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