scholarly journals A Ku band pulsed electron paramagnetic resonance spectrometer using an arbitrary waveform generator for quantum control experiments at millikelvin temperatures

2015 ◽  
Vol 86 (6) ◽  
pp. 063110 ◽  
Author(s):  
Yung Szen Yap ◽  
Yutaka Tabuchi ◽  
Makoto Negoro ◽  
Akinori Kagawa ◽  
Masahiro Kitagawa
Keyword(s):  
Quantum Control ◽  
Waveform Generator ◽  
Electron Paramagnetic Resonance Spectrometer ◽  
Arbitrary Waveform Generator ◽  
Paramagnetic Resonance ◽  
Arbitrary Waveform ◽  
Millikelvin Temperatures ◽  
Pulsed Electron Paramagnetic Resonance ◽  
Electron Paramagnetic ◽  
Ku Band

Multi-Frequency Pulsed Overhauser DNP at 1.2 Tesla

2017 ◽  
Vol 231 (3) ◽  
Author(s):  
Philipp Schöps ◽  
Philipp E. Spindler ◽  
Thomas F. Prisner
Keyword(s):  
Electron Spin ◽  
Electron Spin Polarization ◽  
Waveform Generator ◽  
Nuclear Spins ◽  
Paramagnetic Resonance ◽  
Band Frequency ◽  
Overhauser Effect ◽  
Arbitrary Waveform ◽  
Microwave Excitation ◽  
Electron Paramagnetic

AbstractDynamic nuclear polarization (DNP) is a methodology to increase the sensitivity of nuclear magnetic resonance (NMR) spectroscopy. It relies on the transfer of the electron spin polarization from a radical to coupled nuclear spins, driven by microwave excitation resonant with the electron spin transitions. In this work we explore the potential of pulsed multi-frequency microwave excitation in liquids. Here, the relevant DNP mechanism is the Overhauser effect. The experiments were performed with TEMPOL radicals in aqueous solution at room temperature using a Q-band frequency (1.2 T) electron paramagnetic resonance (EPR) spectrometer combined with a Minispec NMR spectrometer. A fast arbitrary waveform generator (AWG) enabled the generation of multi-frequency pulses used to either sequentially or simultaneously excite all three

scholarly journals Coherent manipulation and quantum phase interference in a fullerene-based electron triplet molecular qutrit

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Ye-Xin Wang ◽  
Zheng Liu ◽  
Yu-Hui Fang ◽  
Shen Zhou ◽  
Shang-Da Jiang ◽  
...  
Keyword(s):  
Quantum Information Processing ◽  
Quantum Phase ◽  
Information Storage ◽  
Paramagnetic Resonance ◽  
Molecular Electron ◽  
Phase Interference ◽  
Superposition States ◽  
Pulsed Electron Paramagnetic Resonance ◽  
Electron Paramagnetic ◽  
Coherent Manipulation

AbstractHigh-spin magnetic molecules are promising candidates for quantum information processing because their intrinsic multiplicity facilitates information storage and computational operations. However, due to the absence of suitable sublevel splittings, their susceptibility to environmental disturbances and limitation from the selection rule, the arbitrary control of the quantum state of a molecular electron multiplet has not been realized. Here, we exploit the photoexcited triplet of C70 as a molecular electron spin qutrit with pulsed electron paramagnetic resonance. We prepared the system into 3-level superposition states characteristic of a qutrit and validated them by the tomography of their density matrices. To further elucidate the coherence of the operation and the nature of the system as a qutrit, we demonstrated the quantum phase interference in the superposition. The interference pattern is further interpreted as a map of possible evolution paths in the space of phase factors, representing the quantum nature of the 3-level system.

scholarly journals Probing the Hydrogen Bonding of the Ferrous–NO Heme Center of nNOS by Pulsed Electron Paramagnetic Resonance

2015 ◽  
Vol 119 (25) ◽  
pp. 6641-6649 ◽  
Author(s):  
Andrei V. Astashkin ◽  
Li Chen ◽  
Bradley O. Elmore ◽  
Deepak Kunwar ◽  
Yubin Miao ◽  
...  
Keyword(s):  
Electron Paramagnetic Resonance ◽  
Hydrogen Bonding ◽  
Paramagnetic Resonance ◽  
Pulsed Electron Paramagnetic Resonance ◽  
Electron Paramagnetic
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