Quantitative prediction of nuclear-spin-diffusion-limited coherence times of molecular quantum bits based on copper(ii)

2017 ◽  
Vol 53 (32) ◽  
pp. 4477-4480 ◽  
Author(s):  
S. Lenz ◽  
K. Bader ◽  
H. Bamberger ◽  
J. van Slageren
Keyword(s):  
Electron Spin ◽  
Nuclear Spin ◽  
Spin Diffusion ◽  
Spin Dynamics ◽  
Quantitative Prediction ◽  
Quantum Bits ◽  
Diffusion Limited ◽  
Frozen Solutions ◽  
Electron Spin Dynamics

We have investigated the electron spin dynamics in a series of copper(ii) β-diketonate complexes both in frozen solutions and doped solids. We simulate the coherence decay quantitatively without fit parameters.

scholarly journals Nuclear-spin-pattern control of electron-spin dynamics in a series of V(iv) complexes

2019 ◽  
Vol 10 (36) ◽  
pp. 8447-8454 ◽  
Author(s):  
Cassidy E. Jackson ◽  
Chun-Yi Lin ◽  
Spencer H. Johnson ◽  
Johan van Tol ◽  
Joseph M. Zadrozny
Keyword(s):  
Spin Relaxation ◽  
Electron Spin ◽  
Nuclear Spin ◽  
Spin Dynamics ◽  
Relaxation Times ◽  
Open Shell ◽  
Pattern Control ◽  
Electron Spin Dynamics

This report details how the design of specific nuclear-spin patterns on ligands modulates spin-relaxation times in a set of open-shell vanadium(iv) complexes.

scholarly journals Electron spin dynamics and spin–lattice relaxation of trityl radicals in frozen solutions

2016 ◽  
Vol 18 (36) ◽  
pp. 24954-24965 ◽  
Author(s):  
Hanjiao Chen ◽  
Alexander G. Maryasov ◽  
Olga Yu. Rogozhnikova ◽  
Dmitry V. Trukhin ◽  
Victor M. Tormyshev ◽  
...  
Keyword(s):  
Electron Spin ◽  
Self Assembly ◽  
Nuclear Polarization ◽  
Spin Dynamics ◽  
Lattice Relaxation ◽  
Spin Lattice Relaxation ◽  
Spin Lattice ◽  
Frozen Solutions ◽  
Electron Spin Dynamics ◽  
Trityl Radical

Self-assembly of trityl radical aggregates dominates electron spin dynamics for dynamic nuclear polarization.

CONTROLLING SPIN COHERENCE WITH SEMICONDUCTOR NANOSTRUCTURES

2008 ◽  
Vol 22 (01n02) ◽  
pp. 111-112
Author(s):  
DAVID D. AWSCHALOM
Keyword(s):  
Information Processing ◽  
Quantum Information ◽  
Electron Spin ◽  
Nuclear Spin ◽  
Room Temperature ◽  
Quantum Information Processing ◽  
Spin Dynamics ◽  
Spin Coherence ◽  
Electron Spin Dynamics ◽  
Coherent Spin

We present two emerging opportunities for manipulating and communicating coherent spin states in semiconductors. First, we show that semiconductor microcavities offer unique means of controlling light-matter interactions in confined geometries, resulting in a wide range of applications in optical communications and inspiring proposals for quantum information processing and computational schemes. Studies of spin dynamics in microcavities — a new and promising research field — have revealed novel effects such as polarization beats, stimulated spin scattering, and giant Faraday rotation. Here, we study the electron spin dynamics in optically-pumped GaAs microdisk lasers with quantum wells and interface-fluctuation quantum dots in the active region. In particular, we examine how the electron spin dynamics are modified by the stimulated emission in the disks, and observe an enhancement of the spin coherence time when the optical excitation is in resonance with a high quality ( Q ~ 5000) lasing mode.1 This resonant enhancement, contrary to expectations from the observed trend in the carrier recombination time, is then manipulated by altering the cavity design and dimensions. In analogy to devices based on excitonic coherence, this ability to engineer coherent interactions between electron spins and photons may provide novel pathways towards spin dependent quantum optoelectronics. In a second example, the nitrogen-vacancy (N-V) center in diamond has garnered interest as a room-temperature solid-state system not only for exploring electronic and nuclear spin phenomena but also as a candidate for spin-based quantum information processing. Spin coherence times of up to 50 microseconds have been reported for ensembles of N-V centers and a two-qubit gate utilizing the electron spin of a N-V center and the nuclear spin of a nearby C-13 atom has been demonstrated. Here, we present experiments using angle-resolved magneto-photoluminescence microscopy to investigate anisotropic spin interactions of single N-V centers in diamond at room temperature.2 Negative peaks in the photoluminescence intensity are observed as a function of both magnetic field magnitude and angle, and can be explained by coherent spin precession and anisotropic relaxation at spin-level anticrossings. Additionally, precise field alignment with the symmetry axis of a single N-V center reveals the resonant magnetic dipolar coupling of a single "bright" electron spin of an N-V center to small numbers of "dark" spins of nitrogen defects in its immediate vicinity, which are otherwise undetected by photoluminescence. Most recently, we are exploring the possibility of utilizing this magnetic dipole coupling between bright and dark spins to couple two spatially separated single N-V center spins by means of intermediate nitrogen spins. Note from Publisher: This article contains the abstract only.

Resident electron spin dynamics of II-VI quantum dots

2009 ◽  
Vol 94 (21) ◽  
pp. 213111 ◽  
Author(s):  
V. Gapon ◽  
J. Puls ◽  
F. Henneberger
Keyword(s):  
Quantum Dots ◽  
Electron Spin ◽  
Spin Dynamics ◽  
Electron Spin Dynamics

The Methyl-Rotor Electron-Spin Dynamics in the Smoluchowski Drift-Diffusional Framework

1997 ◽  
Vol 125 (1) ◽  
pp. 52-64 ◽  
Author(s):  
Anders R SØrnes ◽  
Nikolas P Benetis
Keyword(s):  
Electron Spin ◽  
Spin Dynamics ◽  
Electron Spin Dynamics

Ultrafast Optical Measurement of Hole and Electron Spin Dynamics in Germanium

2010 ◽  
Author(s):  
Arthur L. Smirl ◽  
Eric J. Loren ◽  
Julien Rioux ◽  
J. E. Sipe ◽  
Henry M. van Driel
Keyword(s):  
Electron Spin ◽  
Optical Measurement ◽  
Spin Dynamics ◽  
Ultrafast Optical ◽  
Electron Spin Dynamics

Effect of electron spin dynamics on solid-state dynamic nuclear polarization performance

2014 ◽  
Vol 16 (35) ◽  
pp. 18694-18706 ◽  
Author(s):  
Ting Ann Siaw ◽  
Matthias Fehr ◽  
Alicia Lund ◽  
Allegra Latimer ◽  
Shamon A. Walker ◽  
...  
Keyword(s):  
Solid State ◽  
Electron Spin ◽  
Dynamic Nuclear Polarization ◽  
Nuclear Polarization ◽  
Spin Dynamics ◽  
Nitroxide Radicals ◽  
Flip Flop ◽  
State Dynamic ◽  
Spin Flip ◽  
Electron Spin Dynamics

Optimum integral EPR saturation, determined by electron T1e and electron spin flip-flop rate, maximizes solid-state DNP performance using nitroxide radicals.

Room‐temperature electron spin dynamics in GaAs/AlGaAs quantum wells

1996 ◽  
Vol 68 (6) ◽  
pp. 797-799 ◽  
Author(s):  
Atsushi Tackeuchi ◽  
Yuji Nishikawa ◽  
Osamu Wada
Keyword(s):  
Quantum Wells ◽  
Electron Spin ◽  
Room Temperature ◽  
Spin Dynamics ◽  
Temperature Electron ◽  
Electron Spin Dynamics
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