Berlin 2014 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 29: Ultracold plasmas and Rydberg systems III (with A)
Q 29.3: Talk
Tuesday, March 18, 2014, 14:30–14:45, BEBEL E44/46
Full counting statistics of a dissipative Rydberg gas — Nicola Malossi1,2, Maria Valado1,2, Stefano Scotto2, Paul Huillery3, Pierre Pillet3, Donatella Ciampini1,2,4, Ennio Arimondo1,2,4, and •Oliver Morsch1,2 — 1INO-CNR, Via G. Moruzzi 1, 56124 Pisa, Italy — 2Dipartimento di Fisica `E. Fermi', Universita di Pisa, Largo Pontecorvo 3, 56127 Pisa, Italy — 3Laboratoire Aime Cotton, CNRS, Univ Paris-Sud 11, ENS-Cachan, Campus d'Orsay Bat. 505, 91405 Orsay, France — 4CNISM UdR Dipartimento di Fisica, Largo Pontecorvo 3, 56127 Pisa, Italy
Ultra-cold gases excited to strongly interacting Rydberg states are a promising system for quantum simulations of many-body systems [1, 2]. For off-resonant excitation of such systems in the dissipative regime, highly correlated many-body states exhibiting intermittency and multi-modal counting distributions are expected to be created [3-5]. Here we report on the realization of a such a dissipative gas of Rydberg atoms and measure its full counting statistics for both resonant and off-resonant excitation. We find strongly bimodal counting distributions in the off-resonant regime that are compatible with intermittency due to the coexistence of dynamical phases. Moreover, we measure the phase diagram of the system and find good agreement with recent theoretical predictions [3, 5].
[1] F. Verstraete et al., Nat. Phys. 5, 633 (2009). [2] H. Weimer et al., Nat. Phys. 6, 382 (2010). [3] C. Ates et al., Phys. Rev. A 85, 043620 (2012). [4] T.E. Lee et al., Phys. Rev. A 84, 031402(R) (2011). [5] T.E. Lee et al., Phys. Rev. Lett. 108, 023602 (2012).