Near-Field Sensing of Microwave Magnetic Field Phase Difference Enabled by 
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-Center Spins

Li, Mingxin; Zhang, Ning; Xu, Lixia; Zhang, Jixing; Bian, Guodong; Fan, Pengcheng; Wang, Sixian; Yuan, Hui

doi:10.1103/physrevapplied.19.054088

Cited by 2 publications

(2 citation statements)

References 39 publications

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“…When a DC magnetic field is applied, MW magnetic field drives Rabi oscillations between the m s = 0 and m s = ±1 states at resonance. The transitions between m s = 0 and m s = ±1 are driven by the left and right circular polarization σ ± respectively, [17] as depicted in Fig. 1(a).…”

Section: Basic Theory and Experimental Resultsmentioning

confidence: 99%

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Micron-sized fiber diamond probe for quantum precision measurement of microwave magnetic field

Lu 卢,

Xia 夏,

Chen 陈

et al. 2024

Chinese Phys. B

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We present a quantitative measurement of the horizontal component of the microwave magnetic field of a coplanar waveguide using a quantum diamond probe in fiber format. The measurement results are compared in detail with simulation, showing a good consistence. Further simulation shows fiber diamond probe brings negligible disturbance to the field under measurement compared to bulk diamond. This method will find important applications ranging from electromagnetic compatibility test and failure analysis of high frequency and high complexity integrated circuits.

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Section: Basic Theory and Experimental Resultsmentioning

confidence: 99%

“…[9] Diamond's non-magnetic nature minimizes MW magnetic field disturbance, enhancing measurement accuracy. Advancements in quantum state control, [10][11][12] high-resolution imaging, [13,14] communication, [15] and optimization of pulse trains [16] and magnetic field phases [17] mark a steady evolution in NV center technology.…”

Section: Introductionmentioning

confidence: 99%

Micron-sized fiber diamond probe for quantum precision measurement of microwave magnetic field

Lu 卢,

Xia 夏,

Chen 陈

et al. 2024

Chinese Phys. B

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Measurement of Charge State Dynamics in Nitrogen−Vacancy Centers Based on Microwave‐Pulses‐Assisted Longitudinal Relaxations Balancing of Spin Qutrit

Li,

Yuan,

Bian

et al. 2024

Adv Quantum Tech

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The nitrogen−vacancy (NV) center in diamond gains its versatility when negatively charged (NV−) but is mediocre when neutrally charged. Particularly, the charge states of NV centers are convertible under optical pumping and during the dark intervals, whose dynamics are mixed with the NV−s’ spin polarizations and relaxations, making them difficult to detect. Here, a microwave‐pulses‐assisted charge state dynamics (CSD) measurement method of NV centers in the dark time (DT) is proposed. The microwave pulses are designed to manipulate the populations of the NV−s’ ground state spin triplets (qutrit) to the equilibrium state before the DT. Thus, the longitudinal relaxations of the qutrit are balanced, and pure CSD can be detected. Interestingly, in an annealed bulk diamond, not only the traditional tunneling‐induced fast exponential CSD are observed, but also a slow and long‐term recharging process, which is probably attributed to the exchanging of the electrons between NV centers and the high‐energy‐level charge traps such as vacancy clusters. Furthermore, results demonstrate a 40% increase in NV−s’ contrast by properly extending the recharging DT. These results are significant for the in‐depth study of the NV centers’ CSD and can improve the sensing abilities of the NV− ensemble.

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Near-Field Sensing of Microwave Magnetic Field Phase Difference Enabled by N - V -Center Spins

Cited by 2 publications

References 39 publications

Micron-sized fiber diamond probe for quantum precision measurement of microwave magnetic field

Micron-sized fiber diamond probe for quantum precision measurement of microwave magnetic field

Measurement of Charge State Dynamics in Nitrogen−Vacancy Centers Based on Microwave‐Pulses‐Assisted Longitudinal Relaxations Balancing of Spin Qutrit

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