Spin correlations as a probe of quantum synchronization in trapped ion phonon-lasers

Hush, Michael R. and Li, Weibin and Genway, Sam and Lesanovsky, Igor and Armour, A.D. (2015) Spin correlations as a probe of quantum synchronization in trapped ion phonon-lasers. Physical Review A, 91 . 061401/1-061401/6. ISSN 2469-9934

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Abstract

We investigate quantum synchronization theoretically in a system consisting of two cold ions in microtraps. The ions' motion is damped by a standing-wave laser whilst also being driven by a blue-detuned laser which results in self-oscillation. Working in a non-classical regime, where these oscillations contain only a few phonons and have a sub-Poissonian number variance, we explore how synchronization occurs when the two ions are weakly coupled using a probability distribution for the relative phase. We show that strong correlations arise between the spin and vibrational degrees of freedom within each ion and find that when two ions synchronize their spin degrees of freedom in turn become correlated. This allows one to indirectly infer the presence of synchronization by measuring the ions' internal state.

Item Type: Article
Schools/Departments: University of Nottingham UK Campus > Faculty of Science > School of Physics and Astronomy
Identification Number: https://doi.org/10.1103/PhysRevA.91.061401
Depositing User: Li, Weibin
Date Deposited: 13 Jul 2016 10:24
Last Modified: 26 Sep 2016 15:07
URI: http://eprints.nottingham.ac.uk/id/eprint/34901

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