Diamond quantum thermometry: from foundations to applications

Fujiwara, Masazumi; Shikano, Yutaka

doi:10.1088/1361-6528/ac1fb1

Cited by 73 publications

(64 citation statements)

References 253 publications

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“…Up to now, very little work has been done to investigate the effect of diffraction on quantum thermometry, which mainly involves improving precision standards for temperature sensing in the quantum regime [20]. Improving temperature measurement precision is important in the quantum thermodynamics and modern quantum technology [21][22][23]. The commercially available pyrometer is one of the most common noncontact thermometer, which is the measurement of the thermal infrared radiation naturally emitted by all heated samples [24,25].…”

Section: Introductionmentioning

confidence: 99%

Quantum thermometry in diffraction-limited systems

Xie¹,

Xu²,

Wang³

2022

Preprint

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We investigate the ultimate quantum limit of resolving the temperatures of two thermal sources affected by the diffraction. More quantum Fisher information can be obtained with the priori information than that without the priori information. We carefully consider two strategies: the simultaneous estimation and the individual estimation. The simultaneous estimation of two temperatures is proved to satisfy the saturation condition of quantum Cramér bound and performs better than the individual estimation in the case of small degree of diffraction given the same resources. However, in the case of high degree of diffraction, the individual estimation performs better. In particular, at the maximum diffraction, the simultaneous estimation can not get any information, which is supported by a practical measurement, while the individual estimation can still get the information. In addition, we find that for the individual estimation, a practical and feasible estimation strategy by using the full Hermite-Gauss basis can saturate the quantum Cramér bound without being affected by the attenuation factor at the maximum diffraction.

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Section: Introductionmentioning

confidence: 99%

Quantum thermometry in diffraction-limited systems

Xie¹,

Xu²,

Wang³

2022

Preprint

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“…In most workflows, they first bind to target molecules or cells to produce labeled samples that are subsequently introduced into the detection area for multimodal quantum sensing. The sensing multimodality of NDs results from the dependence of electron-spin-resonance frequencies of nitrogen vacancy (NV) centers on the magnetic field [24][25][26], electric field [27][28][29], and temperature [30][31][32]. It is detected through the modulation of fluorescence intensity by microwave excitation and referred to as optically detected magnetic resonance (ODMR).…”

Section: Introductionmentioning

confidence: 99%

Glass-patternable notch-shaped microwave architecture for on-chip spin detection in biological samples

Oshimi,

Nishimura,

Matsubara

et al. 2022

Preprint

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We report a notch-shaped coplanar microwave waveguide antenna on a glass plate designed for on-chip detection of optically detected magnetic resonance (ODMR) of fluorescent nanodiamonds (NDs). A lithographically patterned thin wire at the center of the notch area in the coplanar waveguide realizes a millimeter-scale ODMR detection area (1.5 × 2.0 mm 2 ) and gigahertz-broadband characteristics with low reflection (∼ 8%). The ODMR signal intensity in the detection area is quantitatively predictable by numerical simulation. Using this chip device, we demonstrate a uniform ODMR signal intensity over the detection area for cells, tissue, and worms. The present demonstration of a chip-based microwave architecture will enable scalable chip integration of ODMR-based quantum sensing technology into various bioassay platforms.

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“…The NV center has a long coherence time of a few milliseconds [10][11][12], and could be incorporated in nanodiamond probes as small as tens of nanometers for high spatial resolution measurements. Moreover, as a temperature sensor, the NV center has a wide dynamic range from hundreds to thousands of Kelvin [13][14][15]. Owing to these properties, the NV center is a promising candidate for realizing novel high-sensitivity and high-spatial resolution temperature sensors [4,8,10,13,14,16].…”

mentioning

confidence: 99%

“…Moreover, as a temperature sensor, the NV center has a wide dynamic range from hundreds to thousands of Kelvin [13][14][15]. Owing to these properties, the NV center is a promising candidate for realizing novel high-sensitivity and high-spatial resolution temperature sensors [4,8,10,13,14,16].…”

mentioning

confidence: 99%

Temperature Sensing with RF-Dressed States of Nitrogen-Vacancy Centers in Diamond

Tabuchi¹,

Matsuzaki²,

Furuya³

et al. 2022

Preprint

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Nitrogen vacancy (NV) centers in diamond are promising systems for realizing sensitive temperature sensors. Pulsed optically detected magnetic resonance (Pulsed-ODMR) is one of the ways to measure the temperature using NV centers. However, Pulsed-ODMR requires careful calibration and strict time synchronization to control the microwave pulse, which complicates its applicability. Nonetheless, the continuous-wave optically detected magnetic resonance (CW-ODMR) in NV centers is another more advantageous way to measure temperature with NV centers, owing to its simple implementation by applying a green laser and microwave in a continuous manner. This, however, has the drawback of a lower sensitivity compared to pulsed-ODMR. Therefore, to benefit from its accessible adaptation, it is highly important to improve the sensitivity of temperature sensing with CW-ODMR. Here, we propose a novel method to measure temperature using CW-ODMR with a quantum state dressed by radio-frequency (RF) fields under transverse magnetic fields. RF fields are expected to suppress inhomogeneous broadening owing to strain variations. Experimental results confirmed that the linewidth becomes narrower in our scheme compared to the conventional one. Moreover, we estimated the sensitivity to be approximately 65.5 mK/ √ Hz, which constitutes approximately seven times improvement with respect to the sensitivity of the conventional scheme.

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Diamond quantum thermometry: from foundations to applications

Cited by 73 publications

References 253 publications

Quantum thermometry in diffraction-limited systems

Quantum thermometry in diffraction-limited systems

Glass-patternable notch-shaped microwave architecture for on-chip spin detection in biological samples

Temperature Sensing with RF-Dressed States of Nitrogen-Vacancy Centers in Diamond

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