Quantum error correction offers a promising path for performing high fidelity quantum
computations. Although fully fault-tolerant executions of algorithms remain unrealized …

Future fault-tolerant quantum computers will require storing and processing quantum data in
logical qubits. Here we realize a suite of logical operations on a distance-2 surface code …

The typical time-independent view of quantum error correction (QEC) codes hides significant
freedom in the decomposition into circuits that are executable on hardware. Using the …

The leakage of quantum information out of the two computational states of a qubit into other
energy states represents a major challenge for quantum error correction. During the …

Superconducting qubits are a promising platform for building fault-tolerant quantum
computers, with recent achievement showing the suppression of logical error with increasing …

Quantum error correction offers a promising path for performing quantum computations with
low errors. Although a fully fault-tolerant execution of a quantum algorithm remains …

Minimizing leakage from computational states is a challenge when using many-level
systems like superconducting quantum circuits as qubits. We realize and extend the …

Active quantum error correction is a central ingredient to achieve robust quantum
processors. In this paper we investigate the potential of quantum machine learning for …

Quantum computing is poised to solve practically useful problems which are computationally
intractable for classical supercomputers. However, the current generation of quantum …

Bosonic cat qubits stabilized by two-photon driven dissipation benefit from exponential
suppression of bit-flip errors and an extensive set of gates preserving this protection. These …