Amsterdam Atom Chips
Welcome to the home page of the atom chip groups at the University of Amsterdam.
We have two atom-chip experiments operational.
- The CELSIUS experiment (PI: dr. N.J. van Druten) uses chips based on patterns of current-carrying wires. The main focus is the physics of low-dimensional quantum gases.
- The magnetic-film chip experiment (PI: dr. R.J.C. Spreeuw) uses chips based on patterned films of permanently magnetic material. Its main focus is quantum information, in particular the development of a neutral-atom quantum register.
News: 2D lattice of magnetic microtraps
Left: electron microscope photograph of our atom chip based on a patterned, 300-nm thick FePt film (magnetized out of plane). Four trapping sites are indicated by dashed ellipses. Right: experimentally obtained absorption image of ultracold clouds of 87Rb atoms, trapped about 10 Ám from the chip surface. Traps in the center contain approximately 104 atoms each. This lattice is very promising as it can potentially fulfill all the requirements of a scalable and addressable quantum information register. See also the pages of the permanent magnet chip project.