Quantum control of a linear oscillator using a static dispersive coupling to a nonlinear ancilla
underpins a wide variety of experiments in circuit QED. Extending this control to more than …

Three-dimensional microwave cavity resonators have been shown to reach lifetimes of the
order of a second by maximizing the cavity volume relative to its surface, using better …

Given some group G of logical gates, for instance the Clifford group, what are the quantum
encodings for which these logical gates can be implemented by simple physical operations …

High-coherence qubits, which can store and manipulate quantum states for long times with
low error rates, are necessary building blocks for quantum computers. Here we propose a …

The measurement of energy is a fundamental tool used, for example, in exploring the early
universe, characterizing particle decay processes, as well as in quantum technology and …

A Kerr nonlinear oscillator (KNO) supports a pair of steady eigenstates, coherent states with
opposite phases, that are good for the encoding of continuous variable qubit basis states …

Flat-band systems provide an ideal platform for exploring exotic quantum phenomena,
where the strongly suppressed kinetic energy in these flat energy bands suggests the …

Magic state cultivation is a newly proposed protocol that represents the state of the art in
magic state generation. It uses the transversality of the $\text {H} _ {XY} $ gate on the 2d …

We demonstrate a synergy between dual-rail qubit encoding and continuous-time quantum
walks (CTQW) to realize universal quantum logic in superconducting circuits. Utilizing the …

Quasiparticle poisoning errors in Majorana-based qubits are not suppressed by the
underlying topological properties, which undermines the usefulness of this proposed …