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Quantum Physics

arXiv:2209.01920 (quant-ph)
[Submitted on 5 Sep 2022 (v1), last revised 5 Feb 2023 (this version, v2)]

Title:Entanglement-enhanced magnetic induction tomography

Authors:Wenqiang Zheng, Hengyan Wang, Rebecca Schmieg, Alan Oesterle, Eugene S. Polzik
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Abstract:Magnetic induction tomography (MIT) is a sensing protocol, exploring conductive objects via their response to radio-frequency magnetic fields. MIT is used in nondestructive testing ranging from geophysics to medical applications. Atomic magnetometers, employed as MIT sensors, allow for significant improvement of the MIT sensitivity and for exploring its quantum limits. Here we report entanglement-enhanced MIT with an atomic magnetometer used as the sensing element. We generate an entangled and spin squeezed state of atoms of the sensor by stroboscopic quantum non-demolition measurement. We then utilize this spin state to demonstrate the improvement of one-dimensional MIT sensitivity beyond the standard quantum limit.
Subjects: Quantum Physics (quant-ph); Atomic Physics (physics.atom-ph); Optics (physics.optics)
Cite as: arXiv:2209.01920 [quant-ph]
  (or arXiv:2209.01920v2 [quant-ph] for this version)
  https://doi.org/10.48550/arXiv.2209.01920
Related DOI: https://doi.org/10.1103/PhysRevLett.130.203602

Submission history

From: Wenqiang Zheng [view email]
[v1] Mon, 5 Sep 2022 12:06:35 UTC (3,035 KB)
[v2] Sun, 5 Feb 2023 02:37:51 UTC (2,422 KB)
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