We report recent progress on the phase space formulation of quantum mechanics with
coordinate‐momentum variables, focusing more on new theory of (weighted) constraint …

The phase‐space formulation of quantum mechanics has recently seen increased use in
testing quantum technologies, including methods of tomography for state verification and …

We construct a new class of quantum error-correcting codes for a bosonic mode, which are
advantageous for applications in quantum memories, communication, and scalable …

Quantum physics allows for entanglement between microscopic and macroscopic objects,
described by discrete and continuous variables, respectively. As in Schrödinger's famous cat …

Quantum superpositions of distinct coherent states in a single-mode harmonic oscillator,
known as “cat states,” have been an elegant demonstration of Schrödinger's famous cat …

Encoding a qubit in a high-quality superconducting microwave cavity offers the opportunity
to perform the first layer of error correction in a single device but presents a challenge: how …

The quantum Rabi model describing the fundamental interaction between light and matter is
a cornerstone of quantum physics. It predicts exotic phenomena like quantum phase …

Quantum computation presents a powerful new paradigm for information processing. A
robust universal quantum computer can be realized with any well controlled quantum …

We propose to directly and quantum-coherently couple a superconducting transmon qubit to
magnons—the quanta of the collective spin excitations, in a nearby magnetic particle. The …

Manipulating the state of a logical quantum bit (qubit) usually comes at the expense of
exposing it to decoherence. Fault-tolerant quantum computing tackles this problem by …