We demonstrate spectroscopy and thermometry of individual motional modes in a mesoscopic 2D ion array using entanglement-induced decoherence as a method of transduction. Our system is a 400 µm-diameter planar crystal of several hundred 9Be+ ions exhibiting complex drumhead modes in the confining potential of a Penning trap. Exploiting precise control over the 9Be+ valence electron spins, we apply a homogeneous spin-dependent optical dipole force to excite arbitrary transverse modes with an effective wavelength approaching the interparticle spacing (20 µm). Center-of-mass displacements below 1 nm are detected via the entanglement of spin and motional degrees of freedom.
Reference:
Sawyer, BC, Britton, JW, Keith, AC, Joseph Wang, CCJ, Freericks, JK, Uys, H, Biercuk, MJ and Bollinger, JJ. 2012. Spectroscopy and thermometry of drumhead modes in a mesoscopic trapped-ion crystal using entanglement. Physical Review Letters, vol. 108, DOI: 10.1103/PhysRevLett.108.213003
Sawyer, B., Britton, J., Keith, A., Joseph Wang, C., Freericks, J., Uys, H., ... Bollinger, J. (2012). Spectroscopy and thermometry of drumhead modes in a mesoscopic trapped-ion crystal using entanglement. http://hdl.handle.net/10204/5991
Sawyer, BC, JW Britton, AC Keith, CCJ Joseph Wang, JK Freericks, H Uys, MJ Biercuk, and JJ Bollinger "Spectroscopy and thermometry of drumhead modes in a mesoscopic trapped-ion crystal using entanglement." (2012) http://hdl.handle.net/10204/5991
Sawyer B, Britton J, Keith A, Joseph Wang C, Freericks J, Uys H, et al. Spectroscopy and thermometry of drumhead modes in a mesoscopic trapped-ion crystal using entanglement. 2012; http://hdl.handle.net/10204/5991.
Creative Commons Attribution 3.0 License (CC-BY), which permits authors and others to copy, distribute, transmit, and adapt the work, provided that proper credit is given.
ResearchSpace
