Coupling Two Laser-Cooled Ions via a Room-Temperature Conductor

An, Da; Alonso, Alberto M.; Matthiesen, Clemens; Häffner, Hartmut

doi:10.1103/physrevlett.128.063201

Title: Coupling Two Laser-Cooled Ions via a Room-Temperature Conductor

Journal Article · 07 February 2022 · Physical Review Letters

DOI: https://doi.org/10.1103/physrevlett.128.063201 · OSTI ID:1865173

^[1]; Alonso, Alberto M. ^[2]; Matthiesen, Clemens ^[2];

^[2]

Univ. of California, Berkeley, CA (United States); UC Berkeley
Univ. of California, Berkeley, CA (United States)

We demonstrate coupling between the motions of two independently trapped ions with a separation distance of 620 μm. Here, the ion-ion interaction is enhanced via a room-temperature electrically floating metallic wire which connects two surface traps. Tuning the motion of both ions into resonance, we show flow of energy with a coupling rate of 11 Hz. Quantum-coherent coupling is hindered by strong surface electric-field noise in our device. Our ion-wire-ion system demonstrates that room-temperature conductors can be used to mediate and tune interactions between independently trapped charges over distances beyond those achievable with free-space dipole-dipole coupling. This technology may be used to sympathetically cool or entangle remotely trapped charges and enable coupling between disparate physical systems.

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Research Organization:: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Univ. of California, Berkeley, CA (United States)

Sponsoring Organization:: USDOE; USDOE Office of Science (SC); USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: AC02-05CH11231; SC0019376

OSTI ID:: 1865173

Journal Information:: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 6 Vol. 128; ISSN 0031-9007

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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