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Entanglement-Enhanced Quantum Sensing via Optimal Global Control with Neutral Atoms in a Cavity

Year: 2026
Type: article
Abstract: We present a deterministic protocol for the preparation of entangled states in the symmetric Dicke subspace of N spins coupled to a common cavity mode that prepares entangled states useful for quantum sensing, achieving a precision significantly better than the standard quantum limit in the presence of photon cavity loss, spontaneous emission and dephasing. The protocol combines a new geometric phase gate which can be utilized for exact unitary synthesis on the Dicke subspace, an analytic solution of the noisy quantum channel dynamics and optimal control methods. This Letter opens the way to entanglement-enhanced sensing with cold trapped atoms in cavities and is extendable to other spin systems coupled to a bosonic mode.
DOI: 10.1103/k3bb-yfdv
Language: English
Open Access status: green
Funders: European Commission, Agence Nationale de la Recherche, Horizon 2020 Framework Programme, HORIZON EUROPE Framework Programme, Australian Research Council, HORIZON EUROPE Marie Sklodowska-Curie Actions
Awards: Cavity-mediated long-range interactions for multiparticle entanglement and quantum simulation, ARC Centre of Excellence for Engineered Quantum Systems, G3646125128, G4133809974, G5322264078, Atomic Quantum Computing as a Service, European infrastructure for Rydberg Quantum Computing
OpenAlex ID: W4403885102
FWCI: 6.726
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Cited by: 2
Related to: 10