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Trapped Ion Quantum Computing Quantum Simulation Quantum Foundations

Emergent Bell Phase in an Electro-Nanomechanical Quantum Simulator

arXiv

Authors: David Ullrich, Marta Cagetti, Stefan Forstner, Adrian Bachtold, Anna Sanpera

Year

2025

Paper ID

17650

Status

Preprint

Abstract Read

~2 min

Abstract Words

102

Citations

N/A

Abstract

Suspended carbon nanotubes hosting electrostatically defined quantum dots allow for exceptionally strong and tunable electromechanical coupling as well as mechanical modes that can reach the quantum ground state of motion simply by cryogenic cooling. This makes them a unique platform for quantum simulation of electron-phonon coupling. Here, we propose an experimentally realisable setup with two such carbon nanotubes in parallel, each hosting four quantum dots. Our system not only exhibits phonon-mediated electron-electron attraction, but also supports a robust, maximally entangled Bell phase at mesoscopic scales shared across the subsystems. These features highlight its potential as a simulator of strongly correlated quantum systems.

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Suspended carbon nanotubes hosting electrostatically defined quantum dots allow for exceptionally strong and tunable electromechanical coupling as well as mechanical modes that...

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2511.02613 [2] arXiv https://arxiv.org/abs/2511.02613 [3] Publisher https://arxiv.org/abs/2511.02613

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