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 …

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

Detection mechanisms for low mass bosonic dark matter candidates, such as the axion or
hidden photon, leverage potential interactions with electromagnetic fields, whereby the dark …

The unique features of quantum theory offer a powerful new paradigm for information
processing. Translating these mathematical abstractions into useful algorithms and …

In contrast to a single quantum bit, an oscillator can store multiple excitations and
coherences provided one has the ability to generate and manipulate complex multiphoton …

Superconducting qubits in a waveguide have long-range interactions mediated by photons
that cause the emergence of collective states. Destructive interference between the qubits …

Single-photon detection is an essential component in many experiments in quantum optics,
but it remains challenging in the microwave domain. We realize a quantum nondemolition …

Thorough control of quantum measurement is key to the development of quantum
information technologies. Many measurements are destructive, removing more information …

Quantum technology relies on the utilization of resources, like quantum coherence and
entanglement, which allow quantum information and computation processing. This …

We demonstrate a superconducting resonator with variable coupling to a measurement
transmission line. The resonator coupling can be adjusted through zero to a photon …