Quantum and thermal noise
Hofferberth, S, I Lesanovsky, T Schumm, A Imambekov, V Gritsev, E Demler, and Jörg Schmiedmayer. “Probing Quantum and Thermal Noise in an Interacting Many-body System.” Nature Physics 4 (April 2008): 489–495. http://dx.doi.org/10.1038/nphys941.