Quantum-mechanical effects at the macroscopic level were first explored in Josephson-
junction-based superconducting circuits in the 1980s. In recent decades, the emergence of …

Over the last two decades, tremendous advances have been made for constructing large-
scale quantum computers. In particular, quantum computing platforms based on …

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

Despite the high measurement fidelity that can now be reached, the dispersive qubit readout
of circuit quantum electrodynamics is plagued by a loss of its quantum nondemolition …

We show that parametric coupling techniques can be used to generate selective entangling
interactions for multi-qubit processors. By inducing coherent population exchange between …

We describe and implement a family of entangling gates activated by radio-frequency flux
modulation applied to a tunable transmon that is statically coupled to a neighboring …

Qubit connectivity is an important property of a quantum processor, with an ideal processor
having random access—the ability of arbitrary qubit pairs to interact directly. This a …

We autonomously stabilize arbitrary states of a qubit through parametric modulation of the
coupling between a fixed frequency qubit and resonator. The coupling modulation is …

We review the physical phenomena that arise when quantum mechanical energy levels are
modulated in time. The dynamics resulting from changes in the transition frequency is a …

In state-of-the-art quantum computing platforms, including superconducting qubits and
trapped ions, imperfections in the two-qubit entangling gates are the dominant contributions …