scholarly journals Surveying ultracold atom-atom binary collisions by utilizing renormalized Numerov method

2021 ◽  
Vol 0 (0) ◽  
pp. 0-0
Author(s):  
◽  
Keyword(s):  
Ultracold Atom ◽  
Numerov Method ◽  
Binary Collisions

scholarly journals Ultracold atom interferometry in space

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Maike D. Lachmann ◽  
Holger Ahlers ◽  
Dennis Becker ◽  
Aline N. Dinkelaker ◽  
Jens Grosse ◽  
...  
Keyword(s):  
Spatial Coherence ◽  
Free Fall ◽  
Atom Interferometry ◽  
Matter Wave ◽  
Sounding Rocket ◽  
Ultracold Atom ◽  
Fundamental Physics ◽  
Light Pulses ◽  
Bose Einstein ◽  
Promising Source

AbstractBose-Einstein condensates (BECs) in free fall constitute a promising source for space-borne interferometry. Indeed, BECs enjoy a slowly expanding wave function, display a large spatial coherence and can be engineered and probed by optical techniques. Here we explore matter-wave fringes of multiple spinor components of a BEC released in free fall employing light-pulses to drive Bragg processes and induce phase imprinting on a sounding rocket. The prevailing microgravity played a crucial role in the observation of these interferences which not only reveal the spatial coherence of the condensates but also allow us to measure differential forces. Our work marks the beginning of matter-wave interferometry in space with future applications in fundamental physics, navigation and earth observation.

scholarly journals Dispersion Management Using Betatron Resonances in an Ultracold-Atom Storage Ring

2006 ◽  
Vol 96 (1) ◽  
Author(s):  
K. W. Murch ◽  
K. L. Moore ◽  
S. Gupta ◽  
D. M. Stamper-Kurn
Keyword(s):  
Storage Ring ◽  
Ultracold Atom ◽  
Dispersion Management

Intercollisional interference at low temperatures

1985 ◽  
Vol 63 (1) ◽  
pp. 99-103
Author(s):  
John Courtenay Lewis
Keyword(s):  
Dipole Moment ◽  
Impact Parameter ◽  
Low Temperatures ◽  
Quantum Effect ◽  
Intermolecular Force ◽  
Fundamental Band ◽  
Induced Dipole ◽  
Binary Collisions

The intercollisional interference dip in the Q-branch of the fundamental band of collision-induced spectra of H2–He mixtures partially fills in at low temperatures. In contradiction to claims that this ia a quantum effect, we show 1. that if the induced dipole moment is exactly proportional to the intermolecular force then the interference dip goes to zero at all temperatures; 2. that the filling-in of the dip is essentially a classical phenomenon and is due mainly to the discontinuity in the distance of closest approach during binary collisions as a function of impact parameter.

scholarly journals Quantum motion effects in an ultracold-atom Mach-Zehnder interferometer

2008 ◽  
Vol 78 (1) ◽  
Author(s):  
I. Lizuain ◽  
S. V. Mousavi ◽  
D. Seidel ◽  
J. G. Muga
Keyword(s):  
Zehnder Interferometer ◽  
Ultracold Atom ◽  
Quantum Motion ◽  
Mach Zehnder Interferometer

TOPOLOGICAL FERMI LIQUID EMERGING FROM A BOSONIC MODEL IN OPTICAL SUPERLATTICES

2011 ◽  
Vol 25 (11) ◽  
pp. 813-821 ◽  
Author(s):  
BO-LUN CHEN ◽  
SU-PENG KOU
Keyword(s):  
Fermi Liquid ◽  
Ultracold Atom ◽  
Fermi Surfaces ◽  
Bosonic System ◽  
Bosonic Model ◽  
Particle Approach

In this paper, we systematically analyze the properties of the bosonic t–J model simulated in optical superlattices. In particular, by using a slave-particle approach, we show the emergence of a strange topological Fermi liquid with Fermi surfaces from a purely bosonic system. We also discuss the possibility of observing these phenomena in ultracold atom experiments. The result may provide some crucial insights into the origin of high-Tc superconductivity.

scholarly journals Atomtronics: Ultracold-atom analogs of electronic devices

2007 ◽  
Vol 75 (2) ◽  
Author(s):  
B. T. Seaman ◽  
M. Krämer ◽  
D. Z. Anderson ◽  
M. J. Holland
Keyword(s):  
Electronic Devices ◽  
Ultracold Atom
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