Atom counting statistics in ensembles of interacting Rydberg atoms

We show that the probability distributions for the number of Rydberg excitations in small ensembles of cold atoms, excited using short (100 ns) laser pulses, can be highly sub-Poissonian. The phenomenon occurs if the atom density and the principal quantum number of the excited Rydberg level are suff...

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Veröffentlicht in:	Physical review letters 2005-12, Vol.95 (25), p.253002.1-253002.4, Article 253002
Hauptverfasser:	LIEBISCH, T. Cubel, REINHARD, A, BERMAN, P. R, RAITHEL, G
Format:	Artikel
Sprache:	eng
Schlagworte:	Atomic and molecular collision processes and interactions Atomic and molecular physics Atomic properties and interactions with photons ATOMS CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS Classical and quantum physics: mechanics and fields DENSITY DISTRIBUTION Exact sciences and technology EXCITATION Interatomic and intermolecular potentials and forces, potential energy surfaces for collisions Interatomic potentials and forces LASERS Multiphoton ionization and excitation to highly excited states (e.g., rydberg states) Photon interactions with atoms PHOTON-ATOM COLLISIONS Physics PROBABILITY PULSES Quantum information RYDBERG STATES STATISTICS
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Zusammenfassung:	We show that the probability distributions for the number of Rydberg excitations in small ensembles of cold atoms, excited using short (100 ns) laser pulses, can be highly sub-Poissonian. The phenomenon occurs if the atom density and the principal quantum number of the excited Rydberg level are sufficiently high. Our observations are attributed to a blockade of the Rydberg atom excitation.
ISSN:	0031-9007 1079-7114
DOI:	10.1103/physrevlett.95.253002