In the past 20 years, impressive progress has been made both experimentally and
theoretically in superconducting quantum circuits, which provide a platform for manipulating …

Already in the first edition of this book [1], a great number of interesting and important
applications for Josephson junctions were discussed. In the decades that have passed since …

Controllable interaction between superconducting qubits is desirable for large-scale
quantum computation and simulation. Here, based on a theoretical proposal by Yan et …

Faithfully transferring the quantum state is essential for quantum information processing.
Here we demonstrate a fast (in 84 ns) and high-fidelity (99.2%) transfer of arbitrary quantum …

Searching topological states in artificial systems has recently become a rapidly growing field
of research. Meanwhile, significant experimental progress on observing topological …

Qubit initialization is a critical task in quantum computation and communication. Extensive
efforts have been made to achieve this with high speed, efficiency and scalability. However …

Operator spreading, often characterized by out-of-time-order correlators (OTOCs), is one of
the central concepts in quantum many-body physics. However, measuring OTOCs is …

According to quantum mechanics, chiral states cannot be non-degenerate eingenstates of a
parity-conserving Hamiltonian. This is in contradiction to the existence of chiral molecules …

Quantum simulation of different exotic topological phases of quantum matter on a noisy
intermediate-scale quantum (NISQ) processor is attracting growing interest. Here, we …

Quantum holonomic gates hold built-in resilience to local noises and provide a promising
approach for implementing fault-tolerant quantum computation. We propose to realize high …