Spectroscopy and Thermometry of Drumhead Modes in a Mesoscopic Trapped-Ion Crystal Using Entanglement

Published

May 25, 2012

Author(s)

Brian C. Sawyer, Joseph W. Britton, Adam Keith, C.-C Joseph Wang, James K. Freericks, Hermann Uys, Michael Biercuk, John J. Bollinger

Abstract

We demonstrate a method of sensitive detection and thermometry of individual modes in cold (_sim1 mK), planar one-component ion plasmas. Exploiting precise control over the valence electron spins of several hundred crystallized ⁹Be⁺ confined in a Penning trap, we apply a homogeneous, spin-dependent optical dipole force to excite arbitrary transverse modes with an effective wavelength approaching the interparticle spacing (_sim20 _mum). Coherent mode excitations as small as 2 nm are detected via entanglement of spin and motional degrees of freedom. Fits to resolved spectra yield individual mode temperatures, facilitating more detailed characterization of plasma heating. Measured mode frequencies are in excellent agreement with those obtained from theory.

Citation

Physical Review Letters

Volume

108

Pub Type

Journals

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Keywords

non-neutral plasmas, one-component plasmas, quantum entanglement, transverse plasma modes

Citation

Sawyer, B. , Britton, J. , Keith, A. , , C. , Freericks, J. , Uys, H. , Biercuk, M. and Bollinger, J. (2012), Spectroscopy and Thermometry of Drumhead Modes in a Mesoscopic Trapped-Ion Crystal Using Entanglement, Physical Review Letters, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=910453 (Accessed December 8, 2024)