Delivering on the revolutionary promise of a universal quantum computer will require
processors with millions of quantum bits (qubits),–. In superconducting quantum processors …

For decades following its introduction in 1968, the resistively and capacitively shunted
junction (RCSJ) model, sometimes referred to as the Stewart–McCumber model, was …

Quantum systems are notoriously difficult to simulate with classical means. Recently, the
idea of using another quantum system—which is experimentally more controllable—as a …

Decoherence in quantum bit circuits is presently a major limitation to their use for quantum
computing purposes. We present experiments, inspired from NMR, that characterize …

In the emerging field of quantum computation and quantum information, superconducting
devices are promising candidates for the implementation of solid-state quantum bits (qubits) …

We demonstrate Mach-Zehnder–type interferometry in a superconducting flux qubit. The
qubit is a tunable artificial atom, the ground and excited states of which exhibit an avoided …

We have studied the dephasing of a superconducting flux qubit coupled to a dc-SQUID
based oscillator. By varying the bias conditions of both circuits we were able to tune their …

Josephson junctions are a central element in superconducting quantum technology; in these
devices, irreversibility arises from abrupt slips of the quantum phase difference across the …

Recent demonstrations of macroscopic quantum coherence in Josephson junction based
electronic circuits have opened an entirely new dimension for research and applications in …

We apply the quantum jump approach to address the statistics of work in a driven two-level
system coupled to a heat bath. We demonstrate how this question can be analyzed by …