Quantum computation with quantum dots
TLDR
In this paper, a universal set of one-and two-quantum-bit gates for quantum computation using the spin states of coupled single-electron quantum dots is proposed, and the desired operations are effected by the gating of the tunneling barrier between neighboring dots.Abstract:
We propose an implementation of a universal set of one- and two-quantum-bit gates for quantum computation using the spin states of coupled single-electron quantum dots. Desired operations are effected by the gating of the tunneling barrier between neighboring dots. Several measures of the gate quality are computed within a recently derived spin master equation incorporating decoherence caused by a prototypical magnetic environment. Dot-array experiments that would provide an initial demonstration of the desired nonequilibrium spin dynamics are proposed.read more
Citations
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Quantum Computation and Quantum Information
TL;DR: This chapter discusses quantum information theory, public-key cryptography and the RSA cryptosystem, and the proof of Lieb's theorem.
Journal ArticleDOI
Spintronics: a spin-based electronics vision for the future.
Stuart A. Wolf,Stuart A. Wolf,David D. Awschalom,Robert A. Buhrman,J. M. Daughton,S. von Molnar,Michael L. Roukes,Almadena Chtchelkanova,Daryl Treger +8 more
TL;DR: This review describes a new paradigm of electronics based on the spin degree of freedom of the electron, which has the potential advantages of nonvolatility, increased data processing speed, decreased electric power consumption, and increased integration densities compared with conventional semiconductor devices.
Journal ArticleDOI
Spintronics: Fundamentals and applications
TL;DR: Spintronics, or spin electronics, involves the study of active control and manipulation of spin degrees of freedom in solid-state systems as discussed by the authors, where the primary focus is on the basic physical principles underlying the generation of carrier spin polarization, spin dynamics, and spin-polarized transport.
Journal ArticleDOI
Superconductivity at 39 K in magnesium diboride
TL;DR: In this article, the authors reported the discovery of bulk superconductivity in magnesium diboride, MgB2, with a transition temperature of 39'K, which they believe to be the highest yet determined for a non-copper-oxide bulk superconductor.
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A silicon-based nuclear spin quantum computer
TL;DR: In this paper, a scheme for implementing a quantum-mechanical computer is presented, where information is encoded onto the nuclear spins of donor atoms in doped silicon electronic devices.
References
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Book
Quantum Theory: Concepts and Methods
Asher Peres,Leslie E. Ballentine +1 more
TL;DR: In this article, the authors introduce the concept of complex vector space and describe a set of properties of composite systems, including Bell's Theorem, and the notion of spacetime symmetry.
BookDOI
The quantum statistics of dynamic processes
Eugen Fick,Günter Sauermann +1 more
TL;DR: In this article, the authors give an introduction to the general principles of the quantum statistics of dynamical processes, and, on the other hand, provide readers who are interested in the treatment of particular phenomena with methods for solving specific problems.
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