Our experiment features a multi-section chamber, atoms are first in a 3D MOT in the octagon chamber. A blue detuned push beam is turned on for ~0.2ms to impart momentum to atoms in the 3D MOT initiating transport to the science chamber. After ~20ms time-of-flight a 3DMOT is loaded in the science chamber. Here an array of optical tweezers are overlapped with cooled MOT to trap single atoms.
|Tao Chen||Postdoc — 2021-Present|
|Chenxi Huang||Graduate student — 2021-Present|
|Ivan Velkosky||Graduate student — 2021-Present|
|Cheeranjeev Purmessur||Graduate student — 2021-Present|
|Eric Meier||Postdoc — 2019-2021|
|Jackson Ang’ong’a||Graduate student — 2015-2021|
Vacuum chamber after assembly and baking
Glimpse of the D2 Laser preparation set up
Chamber ca 2020
Rapid transport (from the Octagon chamber to the science chamber) between two 3D MOTs
A CCD camera captures the formation of the MOT in the science chamber
Single atom preparation
NA=0.5 objectives for single atom trapping
Mounted objective before setting up next to glass cell
Objectives mounted in the set up. The objective to the left delivers optical microtraps at 780nm. Fluorescence from the atoms (767nm) are collected by the objective to the right and imaged at an EMCCD camera. Also visible are coil holders for B field MOT gradient coils and field cancellation coils
Single atom trapping in optical microtraps
Imaging an optical dipole trap for alignment with MOT. A near-resonant beam (in combination with D2 repump beam from MOT beams) is superimposed to the optical microtrap path for alignment
Loading and imaging a single potassium atom into a 780nm microtrap
Optical transitions for Rydberg excitation.
PDH set up for stabilizing 973 nm and 405 nm lasers.