Reduced Decoherence in Large Quantum Registers
No Thumbnail Available
Date
2006-10-11
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
The American Physical Society
Abstract
Among the biggest obstacles for building larger (and thus more powerful) quantum-information processors is decoherence, the decay of quantum-information by the coupling between the quantum register and its environment. Procedures for reducing decoherence processes will be essential for successful operation of larger quantum processors. We study model quantum registers consisting of up to 4900 qubits and measure their decay as a function of the register size. We demonstrate that appropriate sequences of qubit rotations reduce the coupling between system and environment for all sizes of the quantum register, thus preserving the quantum-information 50 times longer than without decoupling.
Description
Table of contents
Keywords
Citation
Krojanski, Hans G.; Suter, Dieter: Reduced Decoherence in Large Quantum Registers. In: Physical Review Letters Jg. 97(2006), 150503.