Kitaev's toric code is an exactly solvable model with Z 2-topological order, which has
potential applications in quantum computation and error correction. However, a direct …

Heralding techniques are useful in quantum communication to circumvent losses without
resorting to error-correction schemes or quantum repeaters. Such techniques are realized …

The generation of genuine multipartite entangled states is challenging in practice. Here we
explore an alternative route to this task, via autonomous entanglement engines which use …

Leakage is a particularly damaging error that occurs when a qubit state falls out of its two-
level computational subspace. Compared to independent depolarizing noise, leaked qubits …

The existence of ideal quantum measurements is one of the fundamental predictions of
quantum mechanics. In theory, an ideal measurement projects a quantum state onto the …

The Hilbert space of a physical qubit typically features more than two energy levels. Using
states outside the qubit subspace can provide advantages in quantum computation. To …

We present a scheme for dissipatively generating maximal entanglement in a heralded
manner. Our setup requires incoherent interactions with two thermal baths at different …

Classical realism demands that system properties exist independently of whether they are
measured, while noncontextuality demands that the results of measurements do not depend …

Random numbers are required for a variety of applications from secure communications to
Monte Carlo simulation. Yet randomness is an asymptotic property, and no output string …

We study theoretically the dynamics of a driven-dissipative qubit-resonator system.
Specifically, a transmon qubit is coupled to a transmission-line resonator; this system is …