Nanoscale spin detection of copper ions using double electron-electron resonance at room temperature

Zhang, Kai; Ghosh, Shreya; Saxena, Sunil; Dutt, Gurudev

doi:10.1103/physrevb.104.224412

Phys. Rev. B

2021

DOI: 10.1103/physrevb.104.224412

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Nanoscale spin detection of copper ions using double electron-electron resonance at room temperature

Kai Zhang

Shreya Ghosh

Sunil Saxena

et al.

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2024

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Cited by 2 publications

References 49 publications

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High frequency magnetometry with an ensemble of spin qubits in hexagonal boron nitride

Patrickson,

Baber,

Gaál

et al. 2024

npj Quantum Inf

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Sensors based on spin qubits in 2D crystals offer the prospect of nanoscale proximities between sensor and source, which could provide access to otherwise inaccessible signals. For AC magnetometry, the sensitivity and frequency range are typically limited by the noise spectrum, which determines the qubit coherence time. We address this using phase modulated continuous concatenated dynamic decoupling, which extends the coherence time towards the T1 limit at room temperature and enables tuneable narrowband AC magnetometry. Using an ensemble of negatively charged boron vacancies in hexagonal boron nitride, we detect out-of-plane AC fields in the range of ~ 10 − 150 MHz, and in-plane fields within ± 150 MHz of the electron spin resonance. We measure an AC magnetic field sensitivity of $$\sim 1\,\mu {{{\rm{T}}}}/\sqrt{{{{\rm{Hz}}}}}$$ ~ 1 μ T / Hz at ~ 2.5 GHz, for a sensor volume of ~ 0.1 μm3. This work establishes the viability of spin defects in 2D materials for high frequency magnetometry, with wide-ranging applications across science and technology.

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High frequency magnetometry with an ensemble of spin qubits in hexagonal boron nitride

Patrickson,

Baber,

Gaál

et al. 2024

npj Quantum Inf

View full text Add to dashboard Cite

show abstract

Quantum Spin Probe of Single Charge Dynamics

Marcks,

Onizhuk,

Wang

et al. 2024

Phys. Rev. Lett.

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Nanoscale spin detection of copper ions using double electron-electron resonance at room temperature

Cited by 2 publications

References 49 publications

High frequency magnetometry with an ensemble of spin qubits in hexagonal boron nitride

High frequency magnetometry with an ensemble of spin qubits in hexagonal boron nitride

Quantum Spin Probe of Single Charge Dynamics

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