This tutorial aims at giving an introductory treatment of the circuit analysis of
superconducting qubits, ie, two-level systems in superconducting circuits. It also touches …

At the interfaces of metal and dielectric materials, strong light–matter interactions excite
surface plasmons; this allows electromagnetic field confinement and enhancement on the …

Near-term quantum computers are limited by the decoherence of qubits to only being able to
run low-depth quantum circuits with acceptable fidelity. This severely restricts what quantum …

With the advent of hybrid quantum classical algorithms using parameterized quantum
circuits, the question of how to optimize these algorithms and circuits emerges. In this paper …

Numerical modeling of radio-frequency waves in plasma with sufficiently high spatial and
temporal resolution remains challenging even with modern computers. However, such …

In a superconducting quantum processor with nearest-neighbor coupling, the dispersive
interaction between adjacent qubits can result in an effective next-nearest-neighbor …

The i swap gate is an entangling swapping gate where the qubits obtain a phase of i if the
state of the qubits is swapped. Here we present a simple implementation of the controlled-i …

Lattice gauge theories are a fascinating and rich class of theories relating to the most
fundamental models of particle physics, and as experimental control on the quantum level …

As we are approaching actual application of quantum technology, it is essential to exploit the
current quantum resources in the best possible way. With this in mind, it might not be …

The tracking control of quantum correlations between two coupled qubits is analyzed, where
only one of the qubits is coupled to a Markovian environment. Such a system is a …