Single and two-mode mechanical squeezing of an optically levitated nanodiamond via dressed-state coherence
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2016-10-03 |
| Journal | New Journal of Physics |
| Authors | Wenchao Ge, M. Bhattacharya |
| Institutions | Rochester Institute of Technology |
| Citations | 17 |
Abstract
Section titled āAbstractāNonclassical states of macroscopic objects are promising for ultrasensitive\nmetrology as well as testing quantum mechanics. In this work, we investigate\ndissipative mechanical quantum state engineering in an optically levitated\nnanodiamond. First, we study single-mode mechanical squeezed states by\nmagnetically coupling the mechanical motion to a dressed three-level system\nprovided by a Nitrogen-vacancy center in the nanoparticle. Quantum coherence\nbetween the dressed levels is created via microwave fields to induce a\ntwo-phonon transition, which results in mechanical squeezing. Remarkably, we\nfind that in ultrahigh vacuum quantum squeezing is achievable at room\ntemperature with feedback cooling. For moderate vacuum, quantum squeezing is\npossible with cryogenic temperature. Second, we present a setup for two\nmechanical modes coupled to the dressed three levels, which results in two-mode\nsqueezing analogous to the mechanism of the single-mode case. In contrast to\nprevious works, our study provides a deterministic method for engineering\nmacroscopic squeezed states without the requirement for a cavity.\n