scholarly journals Metal–ligand covalency enables room temperature molecular qubit candidates

2019 ◽  
Vol 10 (27) ◽  
pp. 6707-6714 ◽  
Author(s):  
Majed S. Fataftah ◽  
Matthew D. Krzyaniak ◽  
Bess Vlaisavljevich ◽  
Michael R. Wasielewski ◽  
Joseph M. Zadrozny ◽  
...  
Keyword(s):  
Room Temperature ◽  
Spin Dynamics ◽  
Metal Ligand ◽  
Coherent Spin

Metal–ligand covalency enables observation of coherent spin dynamics to room temperature in a series of vanadium(iv) and copper(ii) catechol complexes.

Coherent spin dynamics in Permalloy-GaAs hybrids at room temperature

2008 ◽  
Vol 92 (24) ◽  
pp. 241920 ◽  
Author(s):  
P. E. Hohage ◽  
J. Nannen ◽  
S. Halm ◽  
G. Bacher ◽  
M. Wahle ◽  
...  
Keyword(s):  
Room Temperature ◽  
Spin Dynamics ◽  
Coherent Spin

scholarly journals Coherent spin dynamics in nanopatterned ferromagnet-semiconductor hybrids at room-temperature

2010 ◽  
Author(s):  
P. E. Hohage ◽  
J. Nannen ◽  
M. Wahle ◽  
S. F. Fischer ◽  
U. Kunze ◽  
...  
Keyword(s):  
Room Temperature ◽  
Spin Dynamics ◽  
Coherent Spin

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.

scholarly journals Coherent Spin Transport and Suppression of Spin Relaxation in InSb Nanowires with Single Subband Occupancy at Room Temperature

Small ◽  
2014 ◽  
pp. n/a-n/a ◽  
Author(s):  
Saumil Bandyopadhyay ◽  
Md. Iftekhar Hossain ◽  
Hasnain Ahmad ◽  
Jayasimha Atulasimha ◽  
Supriyo Bandyopadhyay
Keyword(s):  
Spin Relaxation ◽  
Room Temperature ◽  
Spin Transport ◽  
Insb Nanowires ◽  
Coherent Spin

Coherent Spin Dynamics in Molecular Cr8Zn Wheels

2015 ◽  
Vol 6 (24) ◽  
pp. 5062-5066 ◽  
Author(s):  
Alberto Ghirri ◽  
Alessandro Chiesa ◽  
Stefano Carretta ◽  
Filippo Troiani ◽  
Johan van Tol ◽  
...  
Keyword(s):  
Spin Dynamics ◽  
Coherent Spin

scholarly journals Stray-field-induced modification of coherent spin dynamics

2007 ◽  
Author(s):  
L. Meier ◽  
G. Salis ◽  
C. Ellenberger ◽  
E. Gini ◽  
K. Ensslin
Keyword(s):  
Spin Dynamics ◽  
Stray Field ◽  
Coherent Spin

scholarly journals Coherent spin dynamics of electrons and holes in CsPbBr3 perovskite crystals

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Vasilii V. Belykh ◽  
Dmitri R. Yakovlev ◽  
Mikhail M. Glazov ◽  
Philipp S. Grigoryev ◽  
Mujtaba Hussain ◽  
...  
Keyword(s):  
Spin Dynamics ◽  
Coherent Spin

scholarly journals Effective Manipulation of Spin Dynamics by Polarization Electric Field in InGaN/GaN Quantum Wells at Room Temperature

2020 ◽  
Vol 7 (13) ◽  
pp. 1903400
Author(s):  
Xingchen Liu ◽  
Ning Tang ◽  
Shixiong Zhang ◽  
Xiaoyue Zhang ◽  
Hongming Guan ◽  
...  
Keyword(s):  
Electric Field ◽  
Quantum Wells ◽  
Room Temperature ◽  
Spin Dynamics ◽  
Polarization Electric Field
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