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J-driven Dynamic Nuclear Polarization (JDNP) was recently proposed for enhancing the sensitivity of solution-state nuclear magnetic resonance (NMR), while bypassing the limitations faced by conventional (Overhauser) DNP at magnetic fields…

Chemical Physics · Physics 2023-01-03 Maria Grazia Concilio , Lucio Frydman

Efficient hyperpolarisation of nuclear spins via optically active defect centers, such as the nitrogen vacancy (NV) center in diamond, has great potential for enhancing NMR based quantum information processing and nanoscale magnetic…

We report a method for nanometer-scale pulsed nuclear magnetic resonance imaging and spectroscopy. Periodic radiofrequency pulses are used to create temporal correlations in the statistical polarization of a solid organic sample. The spin…

Mesoscale and Nanoscale Physics · Physics 2013-10-01 John M. Nichol , Tyler R. Naibert , Eric R. Hemesath , Lincoln J. Lauhon , Raffi Budakian

Optical dynamic nuclear polarization (DNP) offers an attractive approach to enhancing the sensitivity of nuclear magnetic resonance (NMR) spectroscopy. Efficient, optically-generated electron polarization can be leveraged to operate across…

We consider the dynamic nuclear spin polarization (DNP) using two electrons in a double quantum dot in presence of external magnetic field and spin-orbit interaction, in various schemes of periodically repeated sweeps through the S-T+…

Mesoscale and Nanoscale Physics · Physics 2015-06-17 Izhar Neder , Mark S. Rudner , Bertrand I. Halperin

Dynamic nuclear polarization (DNP) has become a very important hyperpolarization method because it can dramatically increase the sensitivity of nuclear magnetic resonance (NMR) of various molecules. Liquid-state DNP based on Overhauser…

Chemical Physics · Physics 2016-05-10 Yugui He , Zhen Zhang , Jiwen Feng , Chongyang Huang , Fang Chen , Maili Liu , Chaoyang Liu

One of solution-state Nuclear Magnetic Resonance (NMR)'s main weaknesses, is its relative insensitivity. J-driven Dynamic Nuclear Polarization (JDNP) was recently proposed for enhancing the sensitivity of solution-state NMR, by bypassing…

Chemical Physics · Physics 2023-08-07 Maria Grazia Concilio , Lucio Frydman

The use of nitrogen-vacancy centers in diamond as a non-invasive platform for hyperpolarizing nuclear spins in molecular samples is a promising area of research with the potential to enhance the sensitivity of nuclear magnetic resonance…

Quantum Physics · Physics 2024-08-08 H. Espinós , C. Munuera-Javaloy , I. Panadero , P. Acedo , R. Puebla , J. Casanova , E. Torrontegui

NV-diamonds have attracted keen interest for nanoscale sensing and spin manipulation. In particular, the non-equilibrium electron spin polarization after optical excitation of single NV centers has successfully been transferred to nuclear…

Mesoscale and Nanoscale Physics · Physics 2021-11-24 R. Rizzato , F. Bruckmaier , K. S. Liu , S. J. Glaser , D. B. Bucher

At the magnetic fields of common NMR instruments, electron Zeeman frequencies are too high for efficient electron-nuclear dipolar cross-relaxation to occur in solution. The rate of that process fades with the electron Zeeman frequency as…

Quantum Physics · Physics 2021-04-22 Maria Grazia Concilio , Murari Soundararajan , Lucio Frydman , Ilya Kuprov

Distant dipolar field (DDF)-based nuclear magnetic resonance is an active research area with many fundamental properties still not well understood. Already several intriguing applications have developed, like HOMOGENIZED and IDEAL…

Medical Physics · Physics 2009-09-29 Curtis Andrew Corum

We introduce a novel NMR approach that extends the capabilities of indirect dynamic nuclear polarization (DNP) under magic-angle spinning to probe the local environment of half-integer spin quadrupolar nuclei. Compared to…

A model of dynamic orientation using optimized radiofrequency (RF) irradiation produced perpendicular to the holding field is developed for the spin-1 system required for tensor-polarized fixed-target experiments. The derivation applies to…

Nuclear Theory · Physics 2017-07-25 Dustin Keller

PulsePol is an elegantly designed pulse-sequence-based quantum control scheme that enables polarization transfer between electron and nuclear spins, for example, in nitrogen-vacancy (NV) centers. However, previous analyses of PulsePol…

We present dynamic nuclear polarization (DNP) in the simplest pseudospin quantum Hall ferromagnet (QHF) of an InSb two-dimensional electron gas with a large g factor using tilted magnetic fields. The DNP-induced amplitude change of a…

Mesoscale and Nanoscale Physics · Physics 2015-05-18 H. W. Liu , K. F. Yang , T. D. Mishima , M. B. Santos , Y. Hirayama

The integration on a single chip of the sensitivity-relevant electronics of nuclear magnetic resonance (NMR) and electron spin resonance (ESR) spectrometers is a promising approach to improve the limit of detection, especially for samples…

Instrumentation and Detectors · Physics 2020-03-09 Nergiz Sahin Solmaz , Marco Grisi , Alessandro Valentino Matheoud , Gabriele Gualco , Giovanni Boero

We study a mechanism by which nuclear hyperpolarization due to the polarization transfer from a microwave-pulse-controlled electron spin is suppressed. From analytical and numerical calculations of the unitary dynamics of multiple nuclear…

Quantum Physics · Physics 2024-03-12 Kento Sasaki , Eisuke Abe

Dynamic nuclear polarization is widely used to enhance the sensitivity of nuclear magnetic resonance. It is presently the method of choice for enhancing the sensitivity of high-field solid state NMR experiments performed under cryogenic…

Chemical Physics · Physics 2022-02-02 Maria Grazia Concilio , Ilya Kuprov , Lucio Frydman

Nuclear electric resonance (NER) is based on nuclear magnetic resonance mediated by spatial oscillations of electron spin domains excited by a radio frequency (RF) electric field, and it allows us to investigate the spatial distribution of…

Mesoscale and Nanoscale Physics · Physics 2012-10-25 S. Watanabe , G. Igarashi , N. Kumada , Y. Hirayama

We use microwave-induced dynamic nuclear polarization (DNP) of the substitutional nitrogen defects (P1 centers) in diamond to hyperpolarize bulk $^{13}$C nuclei in both single crystal and powder samples at room temperature at 3.34 T. The…