Quantum Computing and Quantum Bits in Mesoscopic Systems

✍ Scribed by A. J. Leggett (auth.), A. J. Leggett, B. Ruggiero, P. Silvestrini (eds.)

• Publisher: Springer US
• Year: 2004
• Tongue: English
• Leaves: 263
• Edition: 1
• Category: Library

✦ Synopsis

Quantum information science is a new field of science and technology which requires the collaboration of researchers coming from different fields of physics, mathematics, and engineering: both theoretical and applied. Quantum Computing and Quantum Bits in Mesoscopic Systems addresses fundamental aspects of quantum physics, enhancing the connection between the quantum behavior of macroscopic systems and information theory. In addition to theoretical quantum physics, the book comprehensively explores practical implementation of quantum computing and information processing devices.
On the experimental side, this book reports on recent and previous observations of quantum behavior in several physical systems, coherently coupled Bose-Einstein condensates, quantum dots, superconducting quantum interference devices, Cooper pair boxes, and electron pumps in the context of the Josephson effect. In these systems, the book discusses all required steps, from fabrication through characterization to the final basic implementation for quantum computing.

✦ Table of Contents

Front Matter....Pages i-ix
When is a Quantum-Mechanical System “Isolated”?....Pages 1-11
Manipulation and Readout of a Josephson Qubit....Pages 13-21
Aharonov-Casher Effect Suppression of Macroscopic Flux Tunneling....Pages 23-30
Squid Systems in View of Macroscopic Quantum Coherence And Adiabatic Quantum Gates....Pages 31-40
Test Of An rf-Squid System With Stroboscopic One-Shot Readout Under Microwave Irradiation....Pages 41-45
Squid Rings As Devices for Controlling Quantum Entanglement and Information....Pages 47-57
Manipulating Quantum Transitions in A Persistent Current Qubit....Pages 59-67
Vortices In Josephson Arrays Interacting With Nonclassical Microwaves In A Dissipative Environment....Pages 69-76
Realization Of Universal Quantum Cloning and of the Not Gate by Optical Parametric Amplification....Pages 77-85
New Quantum Nanostructures....Pages 87-94
Transport Investigations of Chemical Nanostructures....Pages 95-99
Long-Range Coherence in Bose-Einstein Condensates....Pages 101-109
A Simple Quantum Equation for Decoherence through Interaction with the Environment....Pages 111-122
Searching for A Semiclassical Shor’s Algorithm....Pages 123-131
Low T c Josephson Junction Response to an Ultrafast Laser Pulse....Pages 133-138
Influence of the Measurement Process on the Step Width in the Coulomb Staircase....Pages 139-148
Josephson Junction Triangular Prism Qubits Coupled to A Resonant LC Bus....Pages 149-159
Incoherent and Coherent Tunneling of Macroscopic Phase in Flux Qubits....Pages 161-169
Decoherence In Flux Qubits Due to 1/f Noise in Josephson Junctions....Pages 171-184
Zeeman Splitting in Quantum Dots....Pages 185-191
Gate Errors in Solid-State Quantum Computer Architectures....Pages 193-199
Quantum Computing with Electron Spins in Quantum Dots....Pages 201-209
Relation Between Dephasing and Renormalization Phenomena in Quantum Two-Level Systems....Pages 211-218
Superconducting Quantum Computing Without Switches....Pages 219-227
Scalable Architecture for Adiabatic Quantum Computing of Np-Hard Problems....Pages 229-236
Semiclassical Analysis of 1/ f Noise in Josephson Qubits....Pages 237-245
Solid-State Analog of an Optical Interferometer....Pages 247-253
Single Electron Transistors with Al/AlO x /Nb and Nb/AlO x /Nb Junctions....Pages 255-262
Time-Local Master Equations: Influence Functional and Cumulant Expansion....Pages 263-271
Back Matter....Pages 273-273

✦ Subjects

Condensed Matter Physics;Atomic, Molecular, Optical and Plasma Physics;Solid State Physics;Spectroscopy and Microscopy