TY - JOUR
T1 - Directional “Superradiant” Collisions
T2 - Bosonic Amplification of Atom Pairs Emitted from an Elongated Bose-Einstein Condensate
AU - Vardi, A.
AU - Moore, M. G.
PY - 2002/1/1
Y1 - 2002/1/1
N2 - We study spontaneous directionality in the bosonic amplification of atom pairs emitted from an elongated Bose-Einstein condensate, an effect analogous to superradiant emission of atom-photon pairs. Using a simplified model, we make analytic predictions regarding directional effects for both atom-atom and atom-photon emission. These are confirmed by numerical mean-field simulations, demonstrating the feasibility of nearly perfect directional emission along the condensate axis. The dependence of the emission angle on the pump strength for atom-atom pairs is significantly different than for atom-photon pairs.
AB - We study spontaneous directionality in the bosonic amplification of atom pairs emitted from an elongated Bose-Einstein condensate, an effect analogous to superradiant emission of atom-photon pairs. Using a simplified model, we make analytic predictions regarding directional effects for both atom-atom and atom-photon emission. These are confirmed by numerical mean-field simulations, demonstrating the feasibility of nearly perfect directional emission along the condensate axis. The dependence of the emission angle on the pump strength for atom-atom pairs is significantly different than for atom-photon pairs.
UR - http://www.scopus.com/inward/record.url?scp=0037179373&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.89.090403
DO - 10.1103/PhysRevLett.89.090403
M3 - Article
C2 - 12190383
AN - SCOPUS:0037179373
SN - 0031-9007
VL - 89
JO - Physical Review Letters
JF - Physical Review Letters
IS - 9
ER -