Simulating quantum spin models using Rydberg-excited atomic ensembles in magnetic microtrap arrays

• Verfasst von: Whitlock, Shannon [VerfasserIn]
• Verfasst von: Glaetzle, Alexander W. [VerfasserIn]
• Verfasst von: Hannaford, Peter [VerfasserIn]
• Titel: Simulating quantum spin models using Rydberg-excited atomic ensembles in magnetic microtrap arrays
• Verf.angabe: Shannon Whitlock, Alexander W. Glaetzle, Peter Hannaford
• Fussnoten: Gesehen am 23.04.2018
• Titel Quelle: Enthalten in: Journal of physics / B
• Jahr Quelle: 2017
• Band/Heft Quelle: 50(2017,7) Artikel-Nummer 074001, 14 Seiten
• ISSN Quelle: 1361-6455
• DOI: doi:10.1088/1361-6455/aa6149
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 157226215X

Abstract

We propose a scheme to simulate lattice spin models based on strong, long-range interacting Rydberg atoms stored in a large-spacing array of magnetic microtraps. Each spin is encoded in a collective spin state involving a single nS or ##IMG## [http://ej.iop.org/images/0953-4075/50/7/074001/jpbaa6149ieqn1.gif] $(n+1)S$ Rydberg atom excited from an ensemble of ground-state alkali atoms prepared via Rydberg blockade. After the excitation laser is switched off, the Rydberg spin states on neighbouring lattice sites interact via general XXZ spin-spin interactions. To read out the collective spin states we propose a single Rydberg atom triggered avalanche scheme in which the presence of a single Rydberg atom conditionally transfers a large number of ground-state atoms in the trap to an untrapped state which can be readily detected by site-resolved absorption imaging. Such a quantum simulator should allow the study of quantum spin systems in almost arbitrary one-dimensional and two-dimensional configurations. This paves the way towards engineering exotic spin models, such as spin models based on triangular-symmetry lattices which can give rise to frustrated-spin magnetism.