Non-Abelian off-diagonal geometric phases in nano-engineered four-qubit systems
2013 (English)In: Europhysics letters, ISSN 0295-5075, E-ISSN 1286-4854, Vol. 103, no 6, 60011- p.Article in journal (Refereed) Published
The concept of off-diagonal geometric phase (GP) has been introduced in order to recover interference information about the geometry of quantal evolution where the standard GPs are not well-defined. In this Letter, we propose a physical setting for realizing non-Abelian off- diagonal GPs. The proposed non-Abelian off-diagonal GPs can be implemented in a cyclic chain of four qubits with controllable nearest-neighbor interactions. Our proposal seems to be within reach in various nano-engineered systems and therefore opens up for first experimental test of the non-Abelian off-diagonal GP.
Place, publisher, year, edition, pages
2013. Vol. 103, no 6, 60011- p.
Geometric phase, spin chains, quantum interferometry
Condensed Matter Physics
Research subject Physics; Physics with spec. in Atomic, Molecular and Condensed Matter Physics
IdentifiersURN: urn:nbn:se:uu:diva-204197DOI: 10.1209/0295-5075/103/60011ISI: 000326280200011OAI: oai:DiVA.org:uu-204197DiVA: diva2:637906
Additional address (ES): Centre for Quantum Technologies, NUS, Singapore2013-07-232013-07-232014-02-17Bibliographically approved