Spintronics - physics reviews
SPINTRONICS - WIKI basic review articles ... by David Awschalom
- 2018
Quantum technologies with optically interfaced solid-state spins
David D. Awschalom1,2, Ronald Hanson 3,4, Jörg Wrachtrup5,6 and Brian B. Zhou1,7
Spins of impurities in solids provide a unique architecture to realize quantum technologies. A quantum register of electron and
nearby nuclear spins in the lattice encompasses high-fidelity state manipulation and readout, long-lived quantum memory, and
long-distance transmission of quantum states by optical transitions that coherently connect spins and photons. These features,
combined with solid-state device engineering, establish impurity spins as promising resources for quantum networks, information processing and sensing. Focusing on optical methods for the access and connectivity of single spins, we review recent
progress in impurity systems such as colour centres in diamond and silicon carbide, rare-earth ions in solids and donors in
silicon. We project a possible path to chip-scale quantum technologies through sustained advances in nanofabrication,
quantum control and materials engineering.
- 2013
Quantum Spintronics: Engineering and Manipulating Atom-Like Spins in Semiconductors
David D. Awschalom, Lee C. Bassett,1 Andrew S. Dzurak,2 Evelyn L. Hu,3 Jason R. Petta
The past decade has seen remarkable progress in isolating and controlling quantum coherence
using charges and spins in semiconductors. Quantum control has been established at room
temperature, and electron spin coherence times now exceed several seconds, a nine–order-of-magnitude
increase in coherence compared with the first semiconductor qubits. These coherence times
rival those traditionally found only in atomic systems, ushering in a new era of ultracoherent
spintronics. We review recent advances in quantum measurements, coherent control, and the
generation of entangled states and describe some of the challenges that remain for processing
quantum information with spins in semiconductors
- 2007
Challenges for semiconductor spintronics
High-volume information-processing and communications devices are at present based on
semiconductor devices, whereas information-storage devices rely on multilayers of magnetic metals
and insulators. Switching within information-processing devices is performed by the controlled motion
of small pools of charge, whereas in the magnetic storage devices information storage and retrieval is
performed by reorienting magnetic domains (although charge motion is often used for the fi nal stage
of readout). Semiconductor spintronics offers a possible direction towards the development of hybrid
devices that could perform all three of these operations, logic, communications and storage, within the
same materials technology. By taking advantage of spin coherence it also may sidestep some limitations
on information manipulation previously thought to be fundamental. This article focuses on advances
towards these goals in the past decade, during which experimental progress has been extraordinary.
- 2001