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Optically addressable spin defects in hexagonal boron nitride hold promise for room-temperature quantum technologies, but their microscopic identities remain largely unknown. Using first principles calculations, we show that coupled spin…

材料科学 · 物理学 2026-05-21 Guanjian Hu , Jijun Huang , Bing Huang , Song Li

Donor spins in silicon-28 ($^{28}$Si) are among the most performant qubits in the solid state, offering record coherence times and gate fidelities above 99%. Donor spin qubits can be fabricated using the semiconductor-industry compatible…

We report the nanoscale spin detection and electron paramagnetic resonance (EPR) spectrum of copper (Cu$^{2+}$) ions via double electron-electron resonance with single spins in diamond at room temperature and low magnetic fields. We measure…

量子物理 · 物理学 2022-01-06 Kai Zhang , Shreya Ghosh , Sunil Saxena , M. V. Gurudev Dutt

The nuclear spin of a phosphorus atom in silicon has been used as a quantum bit in various quantum-information experiments. It has been proposed that this nuclear-spin qubit can be efficiently controlled by an ac electric field, when…

介观与纳米尺度物理 · 物理学 2019-10-02 Bence Hetényi , Péter Boross , András Pályi

A method for high-field optically detected nuclear magnetic resonance (ODNMR) is developed sensitive to 10**8 nuclei. Nuclear spin transitions are induced using a radio frequency coil and detected through Faraday rotation spectroscopy.…

介观与纳米尺度物理 · 物理学 2007-05-23 M. Poggio , D. D. Awschalom

Here we describe a new high frequency/high field continuous wave and pulsed electrically detected magnetic resonance (CW EDMR and pEDMR) setup, operating at 263 GHz and resonance fields between 0 and 12 T. Spin dependent transport in…

材料科学 · 物理学 2015-12-09 W. Akhtar , A. Schnegg , S. Veber , C. Meier , M. Fehr , K. Lips

This work reports the measurement of electron $g$ factor anisotropy ($| \Delta g |$ = $| g_{001} - g_{1 \bar 1 0} |$) for phosphorous donor qubits in strained silicon (sSi = Si/Si$_{1-x}$Ge$_x$) environments. Multi-million-atom…

介观与纳米尺度物理 · 物理学 2018-08-01 M. Usman , H. Huebl , A. R. Stegner , C. D. Hill , M. S. Brandt , L. C. L. Hollenberg

The Cosmic Axion Spin Precession Experiment (CASPEr) seeks to measure oscillating torques on nuclear spins caused by axion or axion-like-particle (ALP) dark matter via nuclear magnetic resonance (NMR) techniques. A sample spin-polarized…

We propose a technique for measuring the state of a single donor electron spin using a field-effect transistor induced two-dimensional electron gas and electrically detected magnetic resonance techniques. The scheme is facilitated by…

介观与纳米尺度物理 · 物理学 2009-11-13 Mohan Sarovar , Kevin C. Young , Thomas Schenkel , K. Birgitta Whaley

The scattering of conduction electrons off neutral donors depends sensitively on the relative orientation of their spin states. We present a theory of spin-dependent scattering in the two dimensional electron gas (2DEG) of field effect…

介观与纳米尺度物理 · 物理学 2009-07-25 Rogerio de Sousa , Cheuk Chi Lo , Jeffrey Bokor

We present two strategies for performing two-qubit operations on the electron spins of an exchange-coupled pair of phosphorus donors in silicon, using the ability to set the donor nuclear spins in arbitrary states. The effective magnetic…

量子物理 · 物理学 2014-06-10 Rachpon Kalra , Arne Laucht , Charles Hill , Andrea Morello

We report on a strategy to indirectly readout the spectrum of an electronic spin via polarization transfer to nuclear spins in its local environment. The nuclear spins are far more abundant and have longer lifetimes, allowing repeated…

量子物理 · 物理学 2024-02-27 Arjun Pillai , Moniish Elanchezhian , Teemu Virtanen , Sophie Conti , Ashok Ajoy

Donor spin states in silicon are a promising candidate for quantum information processing. One possible donor spin readout mechanism is the bound exciton transition that can be excited optically and creates an electrical signal when it…

介观与纳米尺度物理 · 物理学 2023-02-02 Teemu Loippo , Antti Kanniainen , Juha T. Muhonen

If we try to measure the backward optical diffraction radiation (BODR) of high energy electrons from a conductive slit or a semi infinitive plate, the electron beam will pass thru the bending or steering magnets or magnet lenses before…

加速器物理 · 物理学 2009-11-07 G. A. Naumenko

We measure electrically detected magnetic resonance (EDMR) on organic light-emitting diodes (OLEDs) made of the polymer poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV) at room temperature and high magnetic fields, where…

介观与纳米尺度物理 · 物理学 2018-04-18 H. Malissa , R. Miller , D. L. Baird , S. Jamali , G. Joshi , M. Bursch , S. Grimme , J. van Tol , J. M. Lupton , C. Boehme

The development of a new era of quantum devices requires an understanding of how paramagnetic dopants or impurity spins behave in crystal hosts. Here, we describe a new spectroscopic technique which uses traditional Electron Spin Resonance…

We present the design and implementation of a scanning probe microscope, which combines electrically detected magnetic resonance (EDMR) and (photo-)conductive atomic force microscopy ((p)cAFM). The integration of a 3-loop 2-gap X-band…

Spin defects in diamond serve as powerful building blocks for quantum technologies, especially for applications in quantum sensing and quantum networking. Electron-nuclear defects formed in the environment of optically active spins, such as…

量子物理 · 物理学 2026-04-10 Alexander Ungar , Hao Tang , Andrew Stasiuk , Bo Xing , Boning Li , Ju Li , Alexandre Cooper , Paola Cappellaro

The rapidly rising fields of spintronics and quantum information science have led to a strong interest in developing the ability to coherently manipulate electron spins. Electron spin resonance (ESR) is a powerful technique to manipulate…

材料科学 · 物理学 2009-11-13 M. Pioro-Ladriere , T. Obata , Y. Tokura , Y. -S. Shin , T. Kubo , K. Yoshida , T. Taniyama , S. Tarucha