Ivan Deutsch

Professor Ivan Deutsch, University of New Mexico.  "Quantum Control and Measurement of Spins in Ultracold Atomic Gases"  http://info.phys.unm.edu/~ideutsch/  Spins are natural carriers of quantum information given their long coherence times and the decades-long development of quantum control tools for spins on platforms ranging from liquid-state NMR, to gaseous atomic clocks, to solid-state spintronics.  In this talk I will present recent developments in extending these tools to control and measurement of atomic spin in ultracold atomic gases.  New paradigms include quantum control of internal hyperfine spin in high dimensional Hilbert spaces, tomography via continuous measurement polarization spectroscopy, and collective spin squeezing mediated by the atom-photon entangling interactions.  The integration of internal and collective spin control opens the door to new possibilities for enhancing the atom-light interface with applications including metrology, quantum communication networks, and quantum computation.