Year: 2007
Type: article
Abstract: Quantum optimal control theory allows us to design accurate quantum gates. We employ it to design high-fidelity two-bit gates for Josephson charge qubits in the presence of both leakage and noise. Our protocol considerably increases the fidelity of the gate and, more important, it is quite robust in the disruptive presence of 1/f noise. The improvement in the gate performances discussed in this work (errors approximately 10(-3)-10(-4) in realistic cases) allows us to cross the fault tolerance threshold.
Source: Physical Review Letters
Institutions: Karlsruhe Institute of Technology, Scuola Normale Superiore, National Enterprise for NanoScience and NanoTechnology, Harvard University, University of Trento, European Centre for Theoretical Studies in Nuclear Physics and Related Areas, Scuola Internazionale Superiore di Studi Avanzati
Language: English
Subfield: Artificial Intelligence
Field: Computer Science
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2034282770