Alessandro Bruno

TL;DR: In this article, the two parity measurements comprising the stabilizers of the three-qubit repetition code protecting one logical qubit from physical bit-flip errors were realized using a five qubit superconducting processor.

TL;DR: These hybrid Josephson elements are promising for applications requiring microwave superconducting circuits operating in a magnetic field, where nonsinusoidal current-phase relations in the elements produce a double-well Josephson potential.

TL;DR: This work employs a circuit quantum electrodynamics chip with moderate coupling between a resonator and transmon qubit to realise digital quantum simulation of deep-strong coupling dynamics, enabling exploration of extreme coupling regimes and quantum phase transitions and demonstrates a clear first step towards larger complexities such as in the Dicke model.

TL;DR: In this paper, superconducting microwave-frequency resonators based on NbTiN nanowires were proposed for circuit QED experiments requiring strong coupling to quantum systems with small electric dipole moments and requiring a magnetic field.

TL;DR: In this article, the authors present microwave-frequency NbTiN resonators on silicon, systematically achieving internal quality factors above 1 1/m in the quantum regime, and they use two techniques to reduce losses associated with two-level systems: an additional substrate surface treatment prior to Nb TiN deposition to optimize the metal-substrate interface and deep reactive-ion etching of the substrate to displace the substrate-vacuum interfaces away from high electric fields.