Magnetic Microtraps for Bose Einstein Condensates
Christina C Lee
Okinawa Institute of Science and Technology
February 1, 2016
What are they?
Static Magnetic Traps produced by nanofabricated devices
Why are they?
- Compact
- Intense Gradients
- High precision control
- Use magnetic, electric, and dynamic fields
- Image Potentials
But
Compact => high densities
=> 3 body collisions
How close can we go to the surface?
What do they need?
Avoid Majorana Spin Flips
Solution
Use Magnetic Bias
aligned -> unaligned spin
=> no longer trapped
How do we make them?
Magnetic Materials
Current for pinch wires, bias field, and other controls
How do we make them?
Different configurations
Different configurations
Splits BEC into parts- used for interferometry
Different configurations
Different configurations
A way of creating a bias field on chip
Different configurations
How do we view them?
Loading a 2D Microtrap Lattice on a
Magnetic Atom Chip D.R.M. Pijn
Gold Reflective Surface
= Mirror
How do we view them?
A Set Up
Application- Imaging Potentials
http://tx.technion.ac.il/~iastc/HaGoshrim/lectures/joarg.pdf
Periodic array of Bose-Einstein condensates in a magnetic lattice
Sub-micron period lattice structures of magnetic microtraps for ultracold atoms on an atom chip
Radio-frequency spectroscopy of a linear array of Bose-Einstein condensates in a magnetic lattice
Magnetic-film atom chip with 10 μm period lattices of microtraps for quantum information science with Rydberg atoms
Magnetic microtraps for ultracold atoms
Magnetic Traps for Cold Atoms
By Christina Lee
Magnetic Traps for Cold Atoms
Journal club for Condensed Matter 2016, Thomas Busch, OIST
