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Arrays of 10 nm-diameter point contacts of exchange-coupled spin-majority/spin-minority ferromagnetic metals, integrated into infrared-terahertz range photon resonators, are fabricated and measured electrically and optically. Giant,…

介观与纳米尺度物理 · 物理学 2013-11-27 V. Korenivski , A. Iovan , A. Kadigrobov , R. I. Shekhter

Individually addressed Er$^{3+}$ ions in solid-state hosts are promising resources for quantum repeaters, because of their direct emission in the telecom band and compatibility with silicon photonic devices. While the Er$^{3+}$ electron…

We demonstrate microwave manipulation of the spin states of electrically injected spin-polarized electrons in silicon. Although the silicon channel is bounded by ferromagnetic metal films, we show that moderate microwave power can be…

介观与纳米尺度物理 · 物理学 2013-12-16 C. C. Lo , J. Li , I. Appelbaum , J. J. L. Morton

Nuclear spins show long coherence times and are well isolated from the environment, which are properties making them promising for quantum information applications. Here, we present a method for nuclear spin readout by probing the…

介观与纳米尺度物理 · 物理学 2021-06-30 Jonas Mielke , Jason R. Petta , Guido Burkard

Optically addressable molecular triplet spins provide a chemically tunable platform for quantum application, but their coherence is often limited by interactions with surrounding spin baths. Here we demonstrate controlled suppression of…

We consider an electronic spin, such as a nitrogen-vacancy (NV) center in diamond, weakly coupled to a large number (bath) of nuclear spins, and subjected to the Rabi driving with a periodically alternating phase (multiple rotary echo). We…

介观与纳米尺度物理 · 物理学 2015-03-25 V. V. Mkhitaryan , F. Jelezko , V. V. Dobrovitski

Recently, rotation sensors utilizing the nuclear spins of nitrogen-vacancy color centers in diamond have been demonstrated. However, these devices are power-intensive and challenging to integrate into small chip-based radiofrequency…

In this article, we study control of electron-nuclear spin dynamics at magnetic field strengths where the Larmor frequency of the nucleus is comparable to the hyperfine coupling strength. The quantization axis for the nuclear spin differs…

量子物理 · 物理学 2009-11-13 Navin Khaneja

Detecting nuclear spins using single Nitrogen-Vacancy (NV) centers is of particular importance in nano-scale science and engineering, but often suffers from the heating effect of microwave fields for spin manipulation, especially under high…

量子物理 · 物理学 2024-09-06 Zhiyi Hu , Fengjian Jiang , Jingyan He , Yulin Dai , Ya Wang , Nanyang Xu , Jiangfeng Du

To discuss whether an enhanced isomer decay is a preferred process in a plasma environment it is required to know the structure of the isomer as well as the nearby states. The spin-21/2, 6.85-hour high-spin isomer in 93Mo is investigated…

核理论 · 物理学 2011-01-20 M. Hasegawa , Y. Sun , S. Tazaki , K. Kaneko , T. Mizusaki

We have theoretically analyzed coherent nuclear-spin dynamics induced by electron transport through a quantum-dot spin valve. The hyperfine interaction between electron and nuclear spins in a quantum dot allows for the transfer of angular…

介观与纳米尺度物理 · 物理学 2015-06-23 Stefano Chesi , W. A. Coish

We describe a method to hyperpolarize 3He nuclear spins at high magnetic fields (4.7 Tesla) solely by a magnetized plasma. The conditions for such a magnetized plasma are fulfilled when the mean free path of the free electrons is much…

原子物理 · 物理学 2018-12-12 A. Maul , P. Blümler , P. -J. Nacher , E. Otten , G. Tastevin , W. Heil

Coherent control of individual molecular spins in nano-devices is a pivotal prerequisite for fulfilling the potential promised by molecular spintronics. By applying electric field pulses during time-resolved electron spin resonance…

Nuclear spins in solids offer a promising avenue for developing scalable quantum hardware. Leveraging nearby single-color centers, these spins can be efficiently addressed at the single-site level through spin resonance. However,…

量子物理 · 物理学 2024-02-14 Majid Zahedian , Vadim Vorobyov , Jörg Wrachtrup

Coherent dynamics of localized spins in semiconductors is limited by spectral diffusion arising from dipolar fluctuation of lattice nuclear spins. Here we extend the semiclassical theory of spectral diffusion for nuclear spins I=1/2 to the…

介观与纳米尺度物理 · 物理学 2007-05-23 Rogerio de Sousa , Neil Shenvi , K. Birgitta Whaley

Spin noise spectroscopy is an optical technique which can probe spin resonances non-perturbatively. First applied to atomic vapours, it revealed detailed information about nuclear magnetism and the hyperfine interaction. In solids, this…

材料科学 · 物理学 2015-10-21 Steeve Cronenberger , Denis Scalbert , David Ferrand , Hervé Boukari , Joël Cibert

The sensitivity of Magnetic Resonance Imaging (MRI) depends strongly on nuclear spin polarisation and, motivated by this observation, dynamical nuclear spin polarisation has recently been applied to enhance MRI protocols (Kurhanewicz, J.,…

In this review, we describe the potentialities offered by the nuclear magnetic resonance (NMR) technique to explore at a microscopic level new quantum states of condensed matter induced by high magnetic fields. We focus on experiments…

强关联电子 · 物理学 2017-11-30 Claude Berthier , Mladen Horvatić , Marc-Henri Julien , Hadrien Mayaffre , Steffen Krämer

The laws of quantum mechanics are often tested against the behaviour of the lightest element in the periodic table, hydrogen. One of the most striking properties of molecular hydrogen is the coupling between molecular rotational properties…

Coherent oscillations between any two levels from four nuclear spin states of I=3/2 have been demonstrated in a nanometre-scale NMR semiconductor device, where nuclear spins are all-electrically controlled. Using this device, we discuss…

量子物理 · 物理学 2009-08-04 S. K. Ozdemir , A. Miranowicz , T. Ota , G. Yusa , N. Imoto , Y. Hirayama