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RESEARCH PRODUCT
Collective-Mode Enhanced Matter-Wave Optics
André WenzlawskiTammo SternkeEric CharronAchim PetersClaus LämmerzahlJan RudolphMarkus KrutzikSven HerrmannChristoph GrzeschikAlexander GroteW. HerrW. HerrErnst M. RaselNaceur GaaloulPeter StrombergerMerle CorneliusRobin CorgierRobin CorgierChristian DeppnerDavid Guéry-odelinPatrick Windpassingersubject
General Physics and AstronomyKinetic energy01 natural sciences010305 fluids & plasmaslaw.inventionOptics[PHYS.QPHY]Physics [physics]/Quantum Physics [quant-ph]law0103 physical sciencesMagnetic lens010306 general physicsQuantumBose-Einstein CondensateCondensed Matter::Quantum GasesPhysics[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics]business.industryDegenerate energy levelsTemperatureLens (optics)InterferometryAtom opticsCold atoms & matter wavesMatter wavebusinessDelta-Kick Collimationdescription
International audience; In contrast to light, matter-wave optics of quantum gases deals with interactions even in free space and for ensembles comprising millions of atoms. We exploit these interactions in a quantum degenerate gas as an adjustable lens for coherent atom optics. By combining an interaction-driven quadrupole-mode excitation of a Bose-Einstein condensate (BEC) with a magnetic lens, we form a time-domain matter-wave lens system. The focus is tuned by the strength of the lensing potential and the oscillatory phase of the quadrupole mode. By placing the focus at infinity, we lower the total internal kinetic energy of a BEC comprising 101(37) thousand atoms in three dimensions to 3/2 kB⋅38+6−7 pK. Our method paves the way for free-fall experiments lasting ten or more seconds as envisioned for tests of fundamental physics and high-precision BEC interferometry, as well as opens up a new kinetic energy regime.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2021-08-30 | Physical Review Letters |