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Comment on `Detecti...
Comment on `Detecting non-Abelian geometric phases with three-level Λ systems'
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- Ericsson, Marie (author)
- Uppsala universitet,Teoretisk kemi,Quantum information theory
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- Sjöqvist, Erik (author)
- Uppsala universitet,Teoretisk kemi,Quantum information theory
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(creator_code:org_t)
- 2013
- 2013
- English.
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In: Physical Review A. Atomic, Molecular, and Optical Physics. - 1050-2947 .- 1094-1622. ; 87:3, s. 036101-
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Abstract
Subject headings
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- In their recent paper, Yan-Xiong Du {\it et al.} [Phys. Rev. A {\bf 84}, 034103 (2011)] claim to have found a non-Abelian adiabatic geometric phase associated with the energy eigenstates of a large-detuned $\Lambda$ three-level system. They further propose a test to detect the non-commutative feature of this geometric phase. On the contrary, we show that the non-Abelian geometric phase picked up by the energy eigenstates of a $\Lambda$ system is trivial in the adiabatic approximation, while, in the exact treatment of the time evolution, this phase is very small and cannot be separated from the non-Abelian dynamical phase acquired along the path in parameter space.
Subject headings
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
Keyword
- Cold atoms
- geometric phase
- quantum computation
- Fysik med inriktning mot atom- molekyl- och kondenserande materiens fysik
- Physics with spec. in Atomic, Molecular and Condensed Matter Physics
Publication and Content Type
- ref (subject category)
- art (subject category)
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