We have a functioning ion trap, thanks to our Masters (and now Summer) student Manish Trivedi. We can trap microspheres and hold them to pressures of 10-5 mbar, only limited by our vacuum pumps! Here’s a nice picture of the sphere illuminated by a red laser:

Ion trap

And here is a video of several beads trapped at once, repelling each other in a “Coulomb crystal”, whcih moves around tring to find it’s lowest energy configuration:

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