Jahn-Teller instability in dissipative quantum systems

Meaney, Charles P., Duty, Tim, McKenzie, Ross H. and Milburn, G. J. (2010) Jahn-Teller instability in dissipative quantum systems. Physical Review A - Atomic, Molecular, and Optical Physics, 81 4: 1-11. doi:10.1103/PhysRevA.81.043805

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Author Meaney, Charles P.
Duty, Tim
McKenzie, Ross H.
Milburn, G. J.
Title Jahn-Teller instability in dissipative quantum systems
Journal name Physical Review A - Atomic, Molecular, and Optical Physics   Check publisher's open access policy
ISSN 1050-2947
Publication date 2010-04
Sub-type Article (original research)
DOI 10.1103/PhysRevA.81.043805
Open Access Status File (Publisher version)
Volume 81
Issue 4
Start page 1
End page 11
Total pages 11
Place of publication College Park, MD, United States
Publisher American Physical Society
Collection year 2011
Language eng
Formatted abstract
We consider the steady states of a harmonic oscillator coupled so strongly to a two-level system (a qubit) that the rotating wave approximation cannot be made. The Hamiltonian version of this model is known as the E⊗β Jahn-Teller model. The semiclassical version of this system exhibits a fixed-point bifurcation, which in the quantum model leads to a ground state with substantial entanglement between the oscillator and the qubit. We show that the dynamical bifurcation survives in a dissipative quantum description of the system, amidst an even richer bifurcation structure. We propose an experimental implementation of this model based on a superconducting cavity: a superconducting junction in the central conductor of a coplanar waveguide.

Keyword Bifurcation structures
Dissipative quantum systems
Jahn-Teller instability
Harmonic oscillators
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Article #043805

Document type: Journal Article
Sub-type: Article (original research)
Collections: Centre for Quantum Computer Technology Publications
Official 2011 Collection
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 11 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 11 times in Scopus Article | Citations
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Created: Sun, 16 May 2010, 00:02:06 EST