Evidence of antiblockade in an ultracold Rydberg gas

• Verfasst von: Amthor, Thomas [VerfasserIn]
• Verfasst von: Giese, Christian [VerfasserIn]
• Verfasst von: Hofmann, Christoph S. [VerfasserIn]
• Verfasst von: Weidemüller, Matthias [VerfasserIn]
• Titel: Evidence of antiblockade in an ultracold Rydberg gas
• Verf.angabe: Thomas Amthor, Christian Giese, Christoph S. Hofmann, and Matthias Weidemüller
• E-Jahr: 2010
• Jahr: 8 January 2010
• Umfang: 4 S.
• Fussnoten: Gesehen am 22.11.2022
• Titel Quelle: Enthalten in: Physical review letters
• Ort Quelle: College Park, Md. : APS, 1958
• Jahr Quelle: 2010
• Band/Heft Quelle: 104(2010), Artikel-ID 013001, Seite 1-4
• ISSN Quelle: 1079-7114
• DOI: doi:10.1103/PhysRevLett.104.013001
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 182317468X

Abstract

We present the experimental observation of the antiblockade in an ultracold Rydberg gas recently proposed by Ates et al. [Phys. Rev. Lett. 98, 023002 (2007)]. Our approach allows the control of the pair distribution in the gas and is based on a strong coupling of one transition in an atomic three-level system, while introducing specific detunings of the other transition. When the coupling energy matches the interaction energy of the Rydberg long-range interactions, the otherwise blocked excitation of close pairs becomes possible. A time-resolved spectroscopic measurement of the Penning ionization signal is used to identify slight variations in the Rydberg pair distribution of a random arrangement of atoms. A model based on a pair interaction Hamiltonian is presented which well reproduces our experimental observations and allows one to deduce the distribution of nearest-neighbor distances.