2005/04/30 by David Roberts, D. C. Roberts
Physics and Astronomy · #Atomic and Subatomic Physics Research #Atomic physics #Bose–Einstein condensate #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Dephasing #Electromagnetically induced transparency #Landau damping #Landau quantization #Law #Measure (data warehouse) #Physics #Plasma #Quantum mechanics #Quantum optics and atomic interactions #Transparency (behavior) #cond-mat.other #cond-mat.stat-mech #physics.atom-ph #quant-ph
paper · pdf · doi:10.1103/physreva.72.065602
published as Phys. Rev. A 72, 065602 (2005) · v2: added curve to figures; slightly revised discussion; minor editorial changes
arxiv created 2005/07/09 · openalex publication_date 2005/12/13 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We propose a method to probe Landau and Beliaev processes in dilute trapped atomic condensates with a multiple-state structure using electromagnetically induced transparency configurations. Under certain conditions, damping rates from these collisional processes are directly proportional to the dephasing rates, making it possible to determine damping rates through measurement of the dephasing. In the systems we consider, Landau decay rates are enhanced at low momenta, which allows one to distinguish between Landau-dominated and Beliaev-dominated regimes at the same temperature. Furthermore, the enhancement of Landau rates potentially provides a way to measure low temperatures (T⪡Tc) in dilute condensates more accurately than current methods permit.