Speaker: Yehuda B. Band (Ben-Gurion University) Date: Thursday, Jan 10th Time: 12:00-1:00 pm Includes Pizza. Title: Quantum Rotors: Magnetometers and Accelerometers Abstract: In a cold atom gas subject to a spin-dependent 2D optical lattice potential with hexagonal symmetry, trapped atoms undergo orbital motion around the minima of the optical lattice potential. Such atoms are elementary quantum rotors (QRs). The theory of an atomic QR is developed. Wave functions, energies, and degeneracies are determined for both bosonic and fermionic QRs, as well as magnetic dipole transitions between ground and spin-excited states. QRs in optical lattices with precisely one atom per site can be used as a magnetometer or as an accelerometer; such devices can have unprecedented accuracy. Samantha Dakoulas Faculty Assistant to Professors Lukin & Greiner & their groups Department of Physics 17 Oxford St., Lyman 324A Cambridge, MA 02138 P. (617) 496-2544