Hidden frustrated interactions and quantum annealing in trapped-ion spin-phonon chains

Nevado Serrano, Pedro and Porras, Diego (2016) Hidden frustrated interactions and quantum annealing in trapped-ion spin-phonon chains. Physical Review A, 93. 013625-1-013625-12. ISSN 1050-2947

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Abstract

We show that a trapped-ion chain interacting with an optical spin-dependent force shows strong frustration effects due to the interplay between long range interactions and the dressing by optical phases. We consider a strong spin-phonon coupling regime and predict a quantum phase diagram with different competing magnetic and structural orders. In a highly frustrated region, the system shows enhanced quantum fluctuations and entanglement, which are characteristic of spin-liquid phases. We propose and describe within a mean-field approach a quantum annealing process to induce a quasi-adiabatic evolution towards the ground state.

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Subjects: Q Science > QC Physics
Depositing User: Richard Chambers
Date Deposited: 12 Jan 2016 14:33
Last Modified: 07 Mar 2017 04:12
URI: http://sro.sussex.ac.uk/id/eprint/59113

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Project NameSussex Project NumberFunderFunder Ref
UnsetUnsetMarie Curie CIG630955
New Frontiers in Quantum Simulation: NewFQSG1309EUROPEAN UNIONPCIG14-GA-2013-630955