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

Hush, Michael R.; Li, Weibin; Genway, Sam; Lesanovsky, Igor; Armour, A.D.

Authors

Michael R. Hush

WEIBIN LI weibin.li@nottingham.ac.uk
Associate Professor

Sam Genway

A.D. Armour



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.

Journal Article Type Article
Publication Date Jun 4, 2015
Journal Physical Review A
Print ISSN 2469-9926
Electronic ISSN 2469-9934
Publisher American Physical Society
Peer Reviewed Peer Reviewed
Volume 91
Article Number 061401
APA6 Citation Hush, M. R., Li, W., Genway, S., Lesanovsky, I., & Armour, A. (2015). Spin correlations as a probe of quantum synchronization in trapped ion phonon-lasers. Physical Review A, 91, https://doi.org/10.1103/PhysRevA.91.061401
DOI https://doi.org/10.1103/PhysRevA.91.061401
Publisher URL http://journals.aps.org/pra/abstract/10.1103/PhysRevA.91.061401
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingh.../end_user_agreement.pdf

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf





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