dc Quantum Magnetometry below the Ramsey Limit

Wood, Alexander; Stacey, Alastair; Martin, A. M.

doi:10.1103/physrevapplied.18.054019

Cited by 6 publications

(2 citation statements)

References 43 publications

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“…Furthermore, in the presence of a DC external magnetic field, the NV centers within a rotating nanodiamond experience an AC magnetic field. Quantum sensing of an AC magnetic field can have a higher sensitivity compared to that of a DC magnetic field 63 . Consequently, the mechanical rotation can enhance the sensitivity of a magnetometer in measuring DC magnetic fields.…”

Section: Discussionmentioning

confidence: 99%

Quantum control and Berry phase of electron spins in rotating levitated diamonds in high vacuum

Jin,

Shen,

et al. 2024

Nat Commun

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Levitated diamond particles in high vacuum with internal spin qubits have been proposed for exploring macroscopic quantum mechanics, quantum gravity, and precision measurements. The coupling between spins and particle rotation can be utilized to study quantum geometric phase, create gyroscopes and rotational matter-wave interferometers. However, previous efforts in levitated diamonds struggled with vacuum level or spin state readouts. To address these gaps, we fabricate an integrated surface ion trap with multiple stabilization electrodes. This facilitates on-chip levitation and, for the first time, optically detected magnetic resonance measurements of a nanodiamond levitated in high vacuum. The internal temperature of our levitated nanodiamond remains moderate at pressures below 10−5 Torr. We have driven a nanodiamond to rotate up to 20 MHz (1.2 × 109 rpm), surpassing typical nitrogen-vacancy (NV) center electron spin dephasing rates. Using these NV spins, we observe the effect of the Berry phase arising from particle rotation. In addition, we demonstrate quantum control of spins in a rotating nanodiamond. These results mark an important development in interfacing mechanical rotation with spin qubits, expanding our capacity to study quantum phenomena.

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Section: Discussionmentioning

confidence: 99%

Quantum control and Berry phase of electron spins in rotating levitated diamonds in high vacuum

Jin,

Shen,

et al. 2024

Nat Commun

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“…Interestingly, dynamic decoupling techniques are 052609-9 used for sensing of ac fields [54,66,67], largely eliminating decoherence effects from the 1/ f noise. In our approach we do not adopt any similar techniques, though it has recently been shown that such schemes should be considered for dc sensing as well [68,69]. Utilization of multilevel artificial atoms theoretically allows for better sensitivity [33,34,70], but coherence of higher transmon levels may be an issue in such strategies.…”

Section: Discussionmentioning

confidence: 99%

Optimized emulation of quantum magnetometry via superconducting qubits

Gusarov,

Perelshtein,

Hakonen

et al. 2023

Phys. Rev. A

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Evolution of quantum spin sensing: From bench-scale ODMR to compact integrations

Esmaeili,

Schmalenberg,

et al. 2024

APL Materials

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This paper provides a comprehensive review of quantum spin sensing with a focus on the nitrogen vacancy (NV) center in diamond. Beginning with the discovery of optically detected magnetic resonance in NV centers, we trace the evolution of this technology and its integration with complementary metal-oxide-semiconductor technology, marking a significant advancement in measurement science. The unique optical and spin properties of NV centers, operational at room temperature and under ambient conditions, have broadened their application spectrum, notably in magnetometry for nanoscale magnetic field detection. This work describes the transition from isolated NV centers to dense ensembles, highlighting the challenges and advancements in microfabrication and nanofabrication that have facilitated the integration of these centers with photonic structures and electronic devices. The efficient readout of NV spin states and the challenges in miniaturization are addressed, showcasing the development of compact, portable quantum sensors. We also discuss the potential impact of these sensors in various domains, including vehicle sensor systems and biomedical applications, underscoring the significance of environmental influences on magnetometric readings.

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dc Quantum Magnetometry below the Ramsey Limit

Cited by 6 publications

References 43 publications

Quantum control and Berry phase of electron spins in rotating levitated diamonds in high vacuum

Quantum control and Berry phase of electron spins in rotating levitated diamonds in high vacuum

Optimized emulation of quantum magnetometry via superconducting qubits

Evolution of quantum spin sensing: From bench-scale ODMR to compact integrations

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