scholarly journals Ultracold Metastable Helium: Ramsey Fringes and Atom Interferometry

2018 ◽  
pp. 597-616
Author(s):  
W. Vassen ◽  
R. P. M. J. W. Notermans ◽  
R. J. Rengelink ◽  
R. F. H. J. van der Beek
Keyword(s):  
Atom Interferometry ◽  
Metastable Helium

scholarly journals Ultracold metastable helium: Ramsey fringes and atom interferometry

2016 ◽  
Vol 122 (12) ◽  
Author(s):  
W. Vassen ◽  
R. P. M. J. W. Notermans ◽  
R. J. Rengelink ◽  
R. F. H. J. van der Beek
Keyword(s):  
Atom Interferometry ◽  
Metastable Helium

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 Rapid generation of metastable helium Bose-Einstein condensates

2021 ◽  
Vol 103 (5) ◽  
Author(s):  
A. H. Abbas ◽  
X. Meng ◽  
R. S. Patil ◽  
J. A. Ross ◽  
A. G. Truscott ◽  
...  
Keyword(s):  
Metastable Helium ◽  
Rapid Generation ◽  
Bose Einstein

The interaction of metastable helium atoms with alkali atoms

1987 ◽  
Vol 5 (1) ◽  
pp. 9-20 ◽  
Author(s):  
M. -W. Ruf ◽  
A. J. Yencha ◽  
H. Hotop
Keyword(s):  
Metastable Helium ◽  
Helium Atoms ◽  
Alkali Atoms
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