Three-qubit topological phase on entangled photon pairs
2013 (English)In: Physical Review A. Atomic, Molecular, and Optical Physics, ISSN 1050-2947, E-ISSN 1094-1622, Vol. 87, no 4, 042112- p.Article in journal (Refereed) Published
We propose an experiment to observe the topological phases associated with cyclic evolutions, generated by local SU(2) operations, on three-qubit entangled states prepared on different degrees of freedom of entangled photon pairs. The topological phases reveal the nontrivial topological structure of the local SU(2) orbits. We describe how to prepare states showing different topological phases, and discuss their relation to entanglement. In particular, the presence of a π/2 phase shift is a signature of genuine tripartite entanglement in the sense that it does not exist for two-qubit systems.
Place, publisher, year, edition, pages
2013. Vol. 87, no 4, 042112- p.
Quantum optics, quantum entanglement, topological phases
Atom and Molecular Physics and Optics
Research subject Physics
IdentifiersURN: urn:nbn:se:uu:diva-192503DOI: 10.1103/PhysRevA.87.042112ISI: 000317819300001OAI: oai:DiVA.org:uu-192503DiVA: diva2:596161
Additional address (ES): Centre for Quantum Technologies, NUS, Singapore2013-01-212013-01-212014-02-17Bibliographically approved