Entanglement generation between spinor Bose-Einstein condensates using Rydberg excitations
2016 (English)In: PHYSICAL REVIEW A, ISSN 2469-9926, Vol. 93, no 2, 022319Article in journal (Refereed) PublishedText
We propose an experimental scheme of generating entangled states between two spinor Bose-Einstein condensates (BECs) using Rydberg excitations. Due to the strong interaction between Rydberg atoms, the Rydberg excitation creates an interaction between two closely located BECs. The method is suitable particularly for atom chip and permanent magnetic trap systems, which can create many BECs with an arbitrary two-dimensional geometry. We show two schemes of entangled state generation, based on stimulated Raman adiabatic passage (STIRAP) methods. The first method produces a symmetric state with total S-x spin zero between ground and excited states of the atoms using a single STIRAP pair, while the second produces a NOON state between hyperfine ground states using two STIRAP pairs. We show that despite the additional complexity of the BECs, it is possible to identify the initial and final adiabatic states exactly. We verify our theoretical predictions using numerical simulations on small boson number systems.
Place, publisher, year, edition, pages
American Physical Society (APS) , 2016. Vol. 93, no 2, 022319
Atom and Molecular Physics and Optics
IdentifiersURN: urn:nbn:se:kth:diva-183313DOI: 10.1103/PhysRevA.93.022319ISI: 000370019800003ScopusID: 2-s2.0-84959461341OAI: oai:DiVA.org:kth-183313DiVA: diva2:910575
QC 20160309. QC 201603192016-03-092016-03-072016-07-22Bibliographically approved