Work

Robustness of quantum gates in the presence of noise

Year: 2003

Type: article

Abstract: We define several quantitative measures of the robustness of a quantum gate against noise. Exact analytic expressions for the robustness against depolarizing noise are obtained for all bipartite unitary quantum gates, and it is found that the controlled-NOT gate is the most robust two-qubit quantum gate, in the sense that it is the quantum gate which can tolerate the most depolarizing noise and still generate entanglement. Our results enable us to place several analytic upper bounds on the value of the threshold for quantum computation, with the best bound in the most pessimistic error model being ${p}_{\mathrm{th}}<~0.5.$

Source: Physical Review A

DOI: 10.1103/physreva.68.012308

Authors: Aram W. Harrow, Michael A. Nielsen

Institutions: The University of Queensland, Massachusetts Institute of Technology

Language: English

Topic: Quantum Computing Algorithms and Architecture

Subfield: Artificial Intelligence

Field: Computer Science

Domain: Physical Sciences

Open Access status: green

Funders: University of Queensland, Agricultural Research Development Agency, Army Research Office

OpenAlex ID: W1545271014

FWCI: 7.285

Cites: 22

Cited by: 171

Related to: 10