Results 11 to 20 of about 528,108 (265)
Nonzero-Order Resonances in Single-Beam Spin-Exchange Relaxation-Free Magnetometers
Photonics, 2023 Zero-field optically pumped magnetometers operating in the spin-exchange relaxation-free (SERF) regime have been extensively studied, and usually depend on zeroth-order parametric resonance to measure the magnetic field. However, the studies conducted on
Kun Wang +5 more
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Photonics, 2023 The measurement of atomic spin polarization distribution in spin-exchange relaxation free (SERF) magnetometer is an important topic for improving the sensitivity and consistency of multi-channel magnetic field measurement applications.
Xiujie Fang +7 more
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Photonics, 2023 Inside a spin-exchange relaxation-free (SERF) co-magnetometer with a high-pressure buffer gas atomic cell, the magnetic field gradient causes the decoherence of atomic spins to produce magnetic-field gradient relaxation.
Xiujie Fang +7 more
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Weak Differentiability of Product Measures [PDF]
Mathematics of Operations Research, 2010 In this paper, we study cost functions over a finite collection of random variables. For these types of models, a calculus of differentiation is developed that allows us to obtain a closed-form expression for derivatives where “differentiation” has to be understood in the weak sense.
Bernd Heidergott, Haralambie Leahu
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On-Chip Mach-Zehnder-Like Interferometer for Atomic Spin Precession Detection
IEEE Photonics Journal, 2023 At present, most atomic spin precession detection schemes use discrete optical elements, which lead to bulky detection systems. However, chip-based spin precession detection schemes lack modulation, resulting in lower detection sensitivity. In this paper,
Zhibo Cui +4 more
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Weak measurement of Berry’s phase [PDF]
Journal of Physics A: Mathematical and Theoretical, 2021 Abstract Quantum measurements can be generalized to include complex quantities. It is possible to relate the quantum weak values of projection operators to the third order Bargmann invariants. The argument of the weak value becomes, up to a sign, equal to the Berry’s phase associated with the three state vectors.
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Progress and applications of quantum precision measurement based on SERF effect
Frontiers in Physics, 2022 With the development of quantum precision measurement technology, measurement methods based on magnetic, optical and atomic interactions have started to receive widespread attention.
Yueyang Zhai +5 more
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OMMR: Co-registration toolbox of OPM-MEG and MRI
Frontiers in Neuroscience, 2022 Magnetoencephalography (MEG) based on optically pumped magnetometers (OPM-MEG) has shown better flexibility in sensor configuration compared with the conventional superconducting quantum interference devices-based MEG system while being better suited for
Fuzhi Cao +19 more
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A novel oven structure for improving temperature uniformity of vapor cell in atomic sensors
Results in Physics, 2023 Alkali-metal vapor cells are key elements of atomic sensors. The temperature uniformity in the vapor cell is important for the sensitivity of the atomic sensors especially highly-sensitive SERF atomic magnetometers.
Yanan Gao +6 more
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Methods and applications of on-chip beam splitting: A review
Frontiers in Physics, 2022 The construction of large-scale integrated photonic circuit cannot be separated from the important role played by silicon-based optoelectronic devices. As a basic and important link in on-chip photon propagation, beam splitting is of great significance ...
Yuting Xu +3 more
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