TY - JOUR
T1 - Matter wave lensing to picokelvin temperatures
AU - Kovachy, Timothy Light
AU - Hogan, Jason M.
AU - Sugarbaker, Alex
AU - Dickerson, Susannah M.
AU - Donnelly, Christine A.
AU - Overstreet, Chris
AU - Kasevich, Mark A.
N1 - Publisher Copyright:
© 2015 American Physical Society.
PY - 2015/4/8
Y1 - 2015/4/8
N2 - Using a matter wave lens and a long time of flight, we cool an ensemble of Rb87 atoms in two dimensions to an effective temperature of less than 50-30+50pK. A short pulse of red-detuned light generates an optical dipole force that collimates the ensemble. We also report a three-dimensional magnetic lens that substantially reduces the chemical potential of evaporatively cooled ensembles with a high atom number. By observing such low temperatures, we set limits on proposed modifications to quantum mechanics in the macroscopic regime. These cooling techniques yield bright, collimated sources for precision atom interferometry.
AB - Using a matter wave lens and a long time of flight, we cool an ensemble of Rb87 atoms in two dimensions to an effective temperature of less than 50-30+50pK. A short pulse of red-detuned light generates an optical dipole force that collimates the ensemble. We also report a three-dimensional magnetic lens that substantially reduces the chemical potential of evaporatively cooled ensembles with a high atom number. By observing such low temperatures, we set limits on proposed modifications to quantum mechanics in the macroscopic regime. These cooling techniques yield bright, collimated sources for precision atom interferometry.
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U2 - 10.1103/PhysRevLett.114.143004
DO - 10.1103/PhysRevLett.114.143004
M3 - Article
C2 - 25910118
AN - SCOPUS:84929629097
SN - 0031-9007
VL - 114
JO - Physical review letters
JF - Physical review letters
IS - 14
M1 - 143004
ER -