the uva quantum gases & quantum information group · control everything … potential....
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The UvA Quantum Gases & Quantum Information
group
Overview
How?What? Why?
Ultracold quantum gases103 K
1 mK
1 µK
1 K
1 nK BEC
d
Fundamental insights Quantum devices
Understand quantum materials Atomic clocks
Why ultracold quantum gases?
Ye groupJILA
Many-body systems
www.thepistrophy.com
Quantum many-body physics
Especially difficult:
Fermionic systems
?Frustrated systems Dynamics
𝑡𝑡
�𝑂𝑂
Quantum simulation (and beyond)
Control everything
…
potential interactions internal state
difficult to studyquantum system
well-controlledultracold systemsimplified model
Alkaline-earth elementsSr, Ca
New ultracold systems
LanthanidesDy, Ho, Er, Tm, Yb
Dipolar moleculesclosed-shell: KRb, NaK, RbCs,...
open-shell: RbYb, RbSr, YbCs
Rydberg atoms
IonsMore interesting interactions
Benefits
• long-range • anisotropic
More internal structure
Rydberg atoms
Other systems we exploreRbSr molecules
Perpetual atom laser
Sr quantum gas microscope
K quantum gases
Veni & Vici
Overview
How?What? Why?
Experimental realizationOur fridge
cooling laser atomic beamfrom oven
Laser cooling
Experimental realizationThe fridge
cooling laser atomic beamfrom oven
MOT
Why not more?
hk
Photons heatslowest atoms.
Let‘s trap andcool atoms
without near-resonant light!
Optical dipole trap
electric field
induced electric dipole
Optical dipole trap
Infrared laser beam
Trapped atomic cloud
Optical dipole trap
Evaporative cooling
Absorption imaging
CCD
dipole trapthermal cloud
gravity
Signatures of BEC
CCD
dipole trapBEC
gravity
BEC phase transition
T>Tc
T<Tc
T<<Tc
The UvA Quantum Gases & Quantum Information
group
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