density functional theory 1electronic structure 1high-performance computing 1open-source software 1plane-wave methods 1pseudopotentials 1
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Showing 2003 · quant-phShow all
3 papers · 2 filters
quant-ph2003★ 79 cited
Exponential speed-up with a single bit of quantum information: Testing the quantum butterfly effect
David Poulin, Robin Blume-Kohout, Raymond Laflamme +1
We present an efficient quantum algorithm to measure the average fidelity decay of a quantum map under perturbation using a single bit of quantum information. Our algorithm scales…
quant-ph2003★ 216 cited
Objective properties from subjective quantum states: Environment as a witness
Harold Ollivier, David Poulin, Wojciech H. Zurek
We study the emergence of objective properties in open quantum systems. In our analysis, the environment is promoted from a passive role of reservoir selectively destroying quantum…
quant-ph2003★ 115 cited
Description of a quantum convolutional code
H. Ollivier, J. -P. Tillich
We describe a quantum error correction scheme aimed at protecting a flow of quantum information over long distance communication. It is largely inspired by the theory of classical…