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Trapped Ion Quantum Computing Superconducting Qubits

Double symmetry breaking and 2D quantum phase diagram in spin-boson systems

arXiv
Authors: Pierre Nataf, Alexandre Baksic, Cristiano Ciuti

Year

2011

Paper ID

29849

Status

Preprint

Abstract Read

~2 min

Abstract Words

114

Citations

N/A

Abstract

The quantum ground state properties of two independent chains of spins (two-levels systems) interacting with the same bosonic field are theoretically investigated. Each chain is coupled to a different quadrature of the field, leading to two independent symmetry breakings for increasing values of the two spin-boson interaction constants ΩC and ΩI. A phase diagram is provided in the plane $ΩC$,$ΩI$ with 4 different phases that can be characterized by the complex bosonic coherence of the ground states and can be manipulated via non-abelian Berry effects. In particular, when ΩC and ΩI are both larger than two critical values, the fundamental subspace has a four-fold degeneracy. Possible implementations in superconducting or atomic systems are discussed.

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  • This paper contributes to the Superconducting Qubits research area in the Quantum Articles archive.
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  • The quantum ground state properties of two independent chains of spins (two-levels systems) interacting with the same bosonic field are theoretically investigated.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1111.1617 [2] arXiv https://arxiv.org/abs/1111.1617 [3] Publisher https://arxiv.org/abs/1111.1617

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