scholarly journals New Moiré Landscapes for Atomic Spins

Physics ◽  
2021 ◽  
Vol 14 ◽  
Author(s):  
Carmen Rubio-Verdú ◽  
M. Reyes Calvo
Keyword(s):  
Atomic Spins

scholarly journals Spin-Mechanics with Nitrogen-Vacancy Centers and Trapped Particles

Micromachines ◽  
2021 ◽  
Vol 12 (6) ◽  
pp. 651
Author(s):  
Maxime Perdriat ◽  
Clément Pellet-Mary ◽  
Paul Huillery ◽  
Loïc Rondin ◽  
Gabriel Hétet
Keyword(s):  
Degrees Of Freedom ◽  
Theoretical Background ◽  
Nitrogen Vacancy ◽  
Full Potential ◽  
Strongly Coupled ◽  
Trapped Particles ◽  
Quantum Regime ◽  
Atomic Spins ◽  
Nitrogen Vacancy Centers ◽  
Mechanical Oscillators

Controlling the motion of macroscopic oscillators in the quantum regime has been the subject of intense research in recent decades. In this direction, opto-mechanical systems, where the motion of micro-objects is strongly coupled with laser light radiation pressure, have had tremendous success. In particular, the motion of levitating objects can be manipulated at the quantum level thanks to their very high isolation from the environment under ultra-low vacuum conditions. To enter the quantum regime, schemes using single long-lived atomic spins, such as the electronic spin of nitrogen-vacancy (NV) centers in diamond, coupled with levitating mechanical oscillators have been proposed. At the single spin level, they offer the formidable prospect of transferring the spins’ inherent quantum nature to the oscillators, with foreseeable far-reaching implications in quantum sensing and tests of quantum mechanics. Adding the spin degrees of freedom to the experimentalists’ toolbox would enable access to a very rich playground at the crossroads between condensed matter and atomic physics. We review recent experimental work in the field of spin-mechanics that employ the interaction between trapped particles and electronic spins in the solid state and discuss the challenges ahead. Our focus is on the theoretical background close to the current experiments, as well as on the experimental limits, that, once overcome, will enable these systems to unleash their full potential.

scholarly journals Entangling atomic spins with a Rydberg-dressed spin-flip blockade

2015 ◽  
Vol 12 (1) ◽  
pp. 71-74 ◽  
Author(s):  
Y.-Y. Jau ◽  
A. M. Hankin ◽  
T. Keating ◽  
I. H. Deutsch ◽  
G. W. Biedermann
Keyword(s):  
Spin Flip ◽  
Atomic Spins

scholarly journals Magnetic Interaction between Surface-Engineered Rare-Earth Atomic Spins

2012 ◽  
Vol 2 (2) ◽  
Author(s):  
Chiung-Yuan Lin ◽  
Jheng-Lian Li ◽  
Yao-Hsien Hsieh ◽  
Keng-Liang Ou ◽  
B. A. Jones
Keyword(s):  
Rare Earth ◽  
Magnetic Interaction ◽  
Atomic Spins

scholarly journals Readout and control of an endofullerene electronic spin

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Dinesh Pinto ◽  
Domenico Paone ◽  
Bastian Kern ◽  
Tim Dierker ◽  
René Wieczorek ◽  
...  
Keyword(s):  
Self Assembly ◽  
Large Scale ◽  
Dipolar Interaction ◽  
Nitrogen Vacancy ◽  
Zero Field ◽  
Zero Field Splitting ◽  
Paramagnetic Resonance ◽  
Near Surface ◽  
Atomic Spins ◽  
And Control

AbstractAtomic spins for quantum technologies need to be individually addressed and positioned with nanoscale precision. C60 fullerene cages offer a robust packaging for atomic spins, while allowing in-situ physical positioning at the nanoscale. However, achieving single-spin level readout and control of endofullerenes has so far remained elusive. In this work, we demonstrate electron paramagnetic resonance on an encapsulated nitrogen spin (14N@C60) within a C60 matrix using a single near-surface nitrogen vacancy (NV) center in diamond at 4.7 K. Exploiting the strong magnetic dipolar interaction between the NV and endofullerene electronic spins, we demonstrate radio-frequency pulse controlled Rabi oscillations and measure spin-echos on an encapsulated spin. Modeling the results using second-order perturbation theory reveals an enhanced hyperfine interaction and zero-field splitting, possibly caused by surface adsorption on diamond. These results demonstrate the first step towards controlling single endofullerenes, and possibly building large-scale endofullerene quantum machines, which can be scaled using standard positioning or self-assembly methods.

Certified quantum non-demolition measurement of atomic spins

CLEO: 2014 ◽  
2014 ◽  
Author(s):  
R. J. Sewell ◽  
M. Napolitano ◽  
N. Behbood ◽  
G. Colangelo ◽  
F. Martin Ciurana ◽  
...  
Keyword(s):  
Atomic Spins

Post-Growth Annealing of (Ga, Mn)As under Sb Capping

2012 ◽  
Vol 229-231 ◽  
pp. 243-246
Author(s):  
I. Ulfat ◽  
J. Adell ◽  
P. Pal ◽  
J. Sadowski ◽  
L. Ilver ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Exchange Interaction ◽  
Valence Band ◽  
Spectroscopic Investigations ◽  
Atomic Spins

(Ga,Mn)As is a model diluted ferromagnet system in which the atomic spins of Mn ions are ferromagnetically arranged due to the exchange interaction with valence band holes. An important tecchnological concern regarding this system has been approaches that might result in reduction of the density of Mn interstitial and increase in the content of Mn in order to make the system practically feasible. To accomplish the objective we report the results of our recent synchrotron radiation based spectroscopic investigations concening annealing induced modification of as-grown (Ga,Mn)As layers covered with Sb capping.

scholarly journals Entanglement of a Gas of Atomic Spins

2002 ◽  
Vol 101 (3) ◽  
pp. 449-457 ◽  
Author(s):  
N.P. Bigelow
Keyword(s):  
Atomic Spins

scholarly journals Free coherent evolution of a coupled atomic spin system initialized by electron scattering

Science ◽  
2021 ◽  
Vol 372 (6545) ◽  
pp. 964-968
Author(s):  
Lukas M. Veldman ◽  
Laëtitia Farinacci ◽  
Rasa Rejali ◽  
Rik Broekhoven ◽  
Jérémie Gobeil ◽  
...  
Keyword(s):  
Magnetic Interaction ◽  
Scanning Tunneling ◽  
Local Magnetization ◽  
Tunneling Microscopy ◽  
Pump Probe ◽  
Atomic Spin ◽  
Spin Lattice ◽  
Atomic Spins ◽  
Insight Into ◽  
A Current

Full insight into the dynamics of a coupled quantum system depends on the ability to follow the effect of a local excitation in real-time. Here, we trace the free coherent evolution of a pair of coupled atomic spins by means of scanning tunneling microscopy. Rather than using microwave pulses, we use a direct-current pump-probe scheme to detect the local magnetization after a current-induced excitation performed on one of the spins. By making use of magnetic interaction with the probe tip, we are able to tune the relative precession of the spins. We show that only if their Larmor frequencies match, the two spins can entangle, causing angular momentum to be swapped back and forth. These results provide insight into the locality of electron spin scattering and set the stage for controlled migration of a quantum state through an extended spin lattice.

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