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

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arxiv 1201.4415 v2 pith:JNSIPP7Q submitted 2012-01-21 quant-ph cond-mat.mes-hallphysics.atom-ph

Brian C. Sawyer , Joseph W. Britton , Adam C. Keith , C.-C. Joseph Wang , James K. Freericks , Hermann Uys , Michael J. Biercuk , John J. Bollinger This is my paper
classification quant-phcond-mat.mes-hallphysics.atom-ph
keywords modescrystaldrumheadentanglementmesoscopicmotionalspectroscopythermometry
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abstract

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 $\sim$400 $\mu$m-diameter planar crystal of several hundred $^9$Be$^+$ ions exhibiting complex drumhead modes in the confining potential of a Penning trap. Exploiting precise control over the $^9$Be$^+$ 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 ($\sim$20 \nolinebreak$\mu$m). Center-of-mass displacements below 1 nm are detected via entanglement of spin and motional degrees of freedom.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Quantum sensing of high-frequency gravitational waves with ion crystals

    gr-qc 2025-12 unverdicted novelty 6.0 of 10

    Ion crystals detect high-frequency gravitational waves via resonant drumhead mode excitation and spin entanglement for beyond-SQL readout, with sensitivity scaling with crystal size.

  2. Super-Heisenberg protocol for dark matter and high-frequency gravitational wave search

    hep-ph 2026-04 unverdicted novelty 5.0 of 10

    A protocol using squeezed states in 2D ion crystals in a Penning trap achieves super-Heisenberg sensitivity for axion-like particles, dark photons, and high-frequency gravitational waves while accounting for decoherence.

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