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相关论文: Enhanced dynamic nuclear polarization via swept mi…

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In recent decades, microwave photonic channelization techniques have developed significantly. Characterized by low loss, high versatility, large instantaneous bandwidth, and immunity to electromagnetic interference, microwave photonic…

We show that the use of an optical frequency comb probe leads to dramatically improved bandwidth (as high as 12+/-1 MHz) for the detection of modulated radio frequencies in Rydberg atom-based electrometry.

Localized-surface plasmon resonance is of importance in both fundamental and applied physics for the subwavelength confinement of optical field, but realization of quantum coherent processes is confronted with challenges due to strong…

量子物理 · 物理学 2017-12-13 Pai Peng , Yong-Chun Liu , Da Xu , Qi-Tao Cao , Qihuang Gong , Yun-Feng Xiao

The SpinQuest experiment at Fermilab employs a dynamically polarized solid ammonia target to probe the spin structure of the proton, requiring stable, optimized microwave-driven Dynamic Nuclear Polarization (DNP) under high radiation…

仪器与探测器 · 物理学 2026-04-28 Vibodha Bandara , Jordan D. Roberts , Dustin Keller

Due to their large coherent scattering cross section, diamond nanoparticles (DNPs) are considered as a promising candidate material for a new neutron reflector. For investigation of scattering cross sections of packed samples, we have…

仪器与探测器 · 物理学 2020-07-17 Kenji Mishima , Toshiya Otomoa , Kazutaka Ikeda , Hidetoshi Ohshita

High-fidelity multi-qubit initialization is vital for quantum simulation, quantum information processing (QIP), and quantum sensing. In diamond platforms, nuclear spin registers can be initialized through polarization transfer from a nearby…

量子物理 · 物理学 2026-03-02 Soham Pal , Oliver T. Whaites , Wolfgang Knolle , Tania S. Monteiro , Helena S. Knowles

Near-field enhancement of the microwave field is applied for imaging high frequency radio field using a diamond chip with an $n$-doped isotopically purified diamond layer grown by microwave plasma assisted chemical vapor deposition. A short…

量子物理 · 物理学 2023-07-06 Shintaro Nomura , Hideyuki Watanabe , Satoshi Kashiwaya

Over the last two decades magic angle spinning dynamic nuclear polarization (MAS DNP) has revolutionized NMR for materials characterization, tackling its main limitation of intrinsically low sensitivity. Progress in theoretical…

化学物理 · 物理学 2025-02-18 Daniel Jardon- Alvarez , Michal Leskes

This paper presents a theory describing the dynamic nuclear polarization (DNP) process associated with an arbitrary frequency swept microwave pulse. The theory is utilized to explain the integrated solid effect (ISE) as well as the newly…

The paper presents an image denoising scheme by combining a method that is based on directional quasi-analytic wavelet packets (qWPs) with the state-of-the-art Weighted Nuclear Norm Minimization (WNNM) denoising algorithm. The qWP-based…

图像与视频处理 · 电气工程与系统科学 2023-05-10 Amir Averbuch , Pekka Neittaanmäki , Valery Zheludev , Moshe Salhov , Jonathan Hauser

We demonstrate high-resolution photonic RF filters using an RF bandwidth scaling approach based on integrated Kerr optical micro-combs. By employing both an active nonlinear micro-ring resonator (MRR) as a high-quality micro-comb source and…

Non-perturbative and phase-sensitive light-matter interactions have led to the generation of attosecond pulses of light and the control electrical currents on the same timescale. Traditionally, probing these effects via high harmonic…

光学 · 物理学 2022-05-17 Daniel M. B. Lesko , Kristina F. Chang , Scott A. Diddams

With fewer feature dimensions, filter banks are often used in light-weight full-band speech enhancement models. In order to further enhance the coarse speech in the sub-band domain, it is necessary to apply a post-filtering for harmonic…

音频与语音处理 · 电气工程与系统科学 2023-06-02 Xiaohuai Le , Tong Lei , Li Chen , Yiqing Guo , Chao He , Cheng Chen , Xianjun Xia , Hua Gao , Yijian Xiao , Piao Ding , Shenyi Song , Jing Lu

Dynamic nuclear polarisation, which transfers the spin polarisation of electrons to nuclei, is routinely applied to enhance the sensitivity of nuclear magnetic resonance; it is also critical in spintronics, particularly when spin…

Efficient polarization of organic molecules is of extraordinary relevance when performing nuclear magnetic resonance (NMR) and imaging. Commercially available routes to dynamical nuclear polarization (DNP) work at extremely…

Optical frequency combs, with precise control of repetition rate and carrier-envelope-offset frequency, have revolutionized many fields, such as fine optical spectroscopy, optical frequency standards, ultra-fast science research,…

光学 · 物理学 2018-02-14 Y. Zhang , L. Yan , X. F. Zhang , L. Zhang , W. Han , W. Guo , H. Jiang , S. Zhang

An outstanding challenge for deployable quantum technologies is the availability of high-resolution laser spectroscopy at the specific wavelengths of ultranarrow transitions in atomic and solid-state quantum systems. Here, we demonstrate a…

光学 · 物理学 2023-09-29 David A. Long , Jordan R. Stone , Yi Sun , Daron Westly , Kartik Srinivasan

For applications of solid state quantum computing and quantum simulations, high fidelity initialisation of thermally mixed electronic and nuclear spin qubits is essential. Whereas electronic spins can readily be initialised optically to…

量子物理 · 物理学 2024-04-12 O. T. Whaites , T. S. Monteiro

By harnessing quantum superposition and entanglement, remarkable progress has sprouted over the past three decades from different areas of research in communication computation and simulation. To further improve the processing ability of…

应用物理 · 物理学 2021-01-12 Ye Yang , Yaqing Jin , Xiao Xiang , Wei Li , Tao Liu , Shougang Zhang , Ruifang Dong , Ming Li

Nuclear magnetic resonance (NMR) spectroscopy is a widely used tool for chemical analysis and molecular structure identification. Because it typically relies on the weak magnetic fields produced by a small thermal nuclear spin polarization,…