Force-Gradient Sensing and Entanglement via Feedback Cooling of Interacting Nanoparticles
- Author(s)
- Henning Rudolph, Uroš Delić, Markus Aspelmeyer, Klaus Hornberger, Benjamin A. Stickler
- Abstract
We show theoretically that feedback cooling of two levitated, interacting nanoparticles enables differential sensing of forces and the observation of stationary entanglement. The feedback drives the two particles into a stationary, nonthermal state which is susceptible to inhomogeneous force fields and which exhibits entanglement for sufficiently strong interparticle couplings. We predict that force-gradient sensing at the zepto-Newton per micron range is feasible and that entanglement due to the Coulomb interaction between charged particles can be realistically observed in state-of-the-art setups.
- Organisation(s)
- Quantum Optics, Quantum Nanophysics and Quantum Information
- External organisation(s)
- Universität Duisburg-Essen, Österreichische Akademie der Wissenschaften (ÖAW)
- Journal
- Physical Review Letters
- Volume
- 129
- No. of pages
- 7
- ISSN
- 0031-9007
- DOI
- https://doi.org/10.1103/PhysRevLett.129.193602
- Publication date
- 11-2022
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103025 Quantum mechanics
- ASJC Scopus subject areas
- General Physics and Astronomy
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/3360971d-8d5e-4bec-9e41-65dcd54627b5