Double SQUID tunable flux qubit manipulated by fast pulses: operation requirements, dissipation and decoherence
Istituto di Fotonica e Nanotecnologie CNR, via del Cineto Romano 42, 00156 Rome, Italy
Corresponding author: a firstname.lastname@example.org
Revised: 17 November 2006
Published online: 7 February 2007
A double SQUID manipulated by fast magnetic flux pulses can be used as a tunable flux qubit. In this paper we study the requirements for the qubit operation and evaluate the dissipation and decoherence due to the manipulation, with particular attention to the contribution related to the applied tuning control, not present in simpler flux qubits. Furthermore, we shortly discuss the possibility to use an integrated Rapid Single Flux Quantum logic for the qubit control.
PACS: 03.67.Lx – Quantum computation / 85.25.Dq – Superconducting quantum interference devices (SQUIDs)
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2007