Low-power synchronous helical pulse sequences for large anisotropic interactions in MAS NMR: Double-quantum excitation of 14N

2020 ◽  
Vol 153 (24) ◽  
pp. 244202
Author(s):  
Rihards Aleksis ◽  
Andrew J. Pell
Keyword(s):  
Low Power ◽  
Pulse Sequences ◽  
Mas Nmr ◽  
Double Quantum ◽  
Anisotropic Interactions ◽  
Quantum Excitation

scholarly journals Two-axis quantum control of a fast valley qubit in silicon

2019 ◽  
Vol 5 (1) ◽  
Author(s):  
Nicholas E. Penthorn ◽  
Joshua S. Schoenfield ◽  
John D. Rooney ◽  
Lisa F. Edge ◽  
HongWen Jiang
Keyword(s):  
Quantum Dots ◽  
Quantum Control ◽  
Pulse Sequences ◽  
Operation Time ◽  
Double Quantum ◽  
Energy Splitting ◽  
Electron Charge ◽  
Process Tomography ◽  
High Degree ◽  
Charge Noise

Abstract Quantum dots in silicon are a promising architecture for semiconductor quantum computing due to a high degree of electric control and compatibility with existing silicon fabrication processes. Although electron charge and spin are prominent methods for encoding the qubit state, valley states in silicon can also store quantum information via valley-orbit coupling with protection against charge noise. By observing coherent oscillations between valley states in a Si/SiGe double quantum dot device tuned to the two-electron charge configuration, we measure the valley energy splitting in both quantum dots individually. We further demonstrate two-axis quantum control of the valley qubit using gated pulse sequences with X and Z rotations occurring within a fast operation time of 300 ps. This control is used to completely map out the surface of the Bloch sphere in a single phase-space plot that is subsequently used for state and process tomography.

Low-power homonuclear dipolar recoupling using supercycled symmetry-based and exponentially-modulated pulse sequences

2011 ◽  
Vol 503 (4-6) ◽  
pp. 310-315 ◽  
Author(s):  
Anders Bodholt Nielsen ◽  
Sheetal Kumar Jain ◽  
Niels Chr. Nielsen
Keyword(s):  
Low Power ◽  
Pulse Sequences ◽  
Dipolar Recoupling

Low-power XiX decoupling in MAS NMR experiments

2003 ◽  
Vol 163 (2) ◽  
pp. 332-339 ◽  
Author(s):  
Matthias Ernst ◽  
Ago Samoson ◽  
Beat H Meier
Keyword(s):  
Low Power ◽  
Mas Nmr

Glass Network Evolution with Bi3+/Ti4+Substitution in Phosphate Glasses Formulated with a Constant Oxygen/Phosphorus Ratio. EXAFS, XANES, and31P Double Quantum MAS NMR

2003 ◽  
Vol 15 (25) ◽  
pp. 4709-4716 ◽  
Author(s):  
Lionel Montagne ◽  
Sylvie Daviero ◽  
Gérard Palavit ◽  
Abdelillah Shaim ◽  
Mohamed Et-Tabirou
Keyword(s):  
Glass Network ◽  
Network Evolution ◽  
Phosphate Glasses ◽  
Mas Nmr ◽  
Double Quantum

scholarly journals Low-power broadband solid-state MAS NMR of 14N

2017 ◽  
Vol 146 (19) ◽  
pp. 194202 ◽  
Author(s):  
Andrew J. Pell ◽  
Kevin J. Sanders ◽  
Sebastian Wegner ◽  
Guido Pintacuda ◽  
Clare P. Grey
Keyword(s):  
Solid State ◽  
Low Power ◽  
Mas Nmr
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