학술논문
One- and Two-Qubit Gates: Rabi Technique and Single Unipolar Pulses.
Document Type
Article
Author
Source
Subject
*PICOSECOND pulses
*QUANTUM gates
*STRUCTURAL optimization
*ELECTRIC lines
*MAGNETIC fields
*QUBITS
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Language
ISSN
1063-7834
Abstract
Methods for controlling states of interacting superconducting flux qubits using power-efficient devices of fast single-quantum logic (Josephson nonlinearity cavities) are studied. One- and two-qubit quantum logical operations performed within the conventional control technique using Rabi pulses and using picosecond single unipolar magnetic field pulses are comparatively analyzed. It is shown that all main operations can be implemented with an accuracy of better than 97% due to optimization of the shape and parameters of unipolar control pulses (associated with, e.g., propagation of fluxons in transmission lines). The efficiency of the developed technique for programming a two-qubit quantum processor implementing the simplest Deutsch–Jozsa algorithm is demonstrated. [ABSTRACT FROM AUTHOR]