Artificial intelligence and machine learning for quantum technologies

M Krenn, J Landgraf, T Foesel, F Marquardt - Physical Review A, 2023 - APS
In recent years the dramatic progress in machine learning has begun to impact many areas
of science and technology significantly. In the present perspective article, we explore how …

Quantum information processing with superconducting circuits: a review

G Wendin - Reports on Progress in Physics, 2017 - iopscience.iop.org
During the last ten years, superconducting circuits have passed from being interesting
physical devices to becoming contenders for near-future useful and scalable quantum …

Beating the break-even point with a discrete-variable-encoded logical qubit

Z Ni, S Li, X Deng, Y Cai, L Zhang, W Wang, ZB Yang… - Nature, 2023 - nature.com
Quantum error correction (QEC) aims to protect logical qubits from noises by using the
redundancy of a large Hilbert space, which allows errors to be detected and corrected in real …

High-fidelity, frequency-flexible two-qubit fluxonium gates with a transmon coupler

L Ding, M Hays, Y Sung, B Kannan, J An, A Di Paolo… - Physical Review X, 2023 - APS
We propose and demonstrate an architecture for fluxonium-fluxonium two-qubit gates
mediated by transmon couplers (FTF, for fluxonium-transmon-fluxonium). Relative to …

Encoding a magic state with beyond break-even fidelity

RS Gupta, N Sundaresan, T Alexander, CJ Wood… - Nature, 2024 - nature.com
To run large-scale algorithms on a quantum computer, error-correcting codes must be able
to perform a fundamental set of operations, called logic gates, while isolating the encoded …

Demonstration of logical qubits and repeated error correction with better-than-physical error rates

A Paetznick, MP da Silva, C Ryan-Anderson… - arxiv preprint arxiv …, 2024 - arxiv.org
The promise of quantum computers hinges on the ability to scale to large system sizes, eg,
to run quantum computations consisting of more than 100 million operations fault-tolerantly …

Quantum error correction below the surface code threshold

R Acharya, L Aghababaie-Beni, I Aleiner… - arxiv preprint arxiv …, 2024 - arxiv.org
Quantum error correction provides a path to reach practical quantum computing by
combining multiple physical qubits into a logical qubit, where the logical error rate is …

Surpassing millisecond coherence in on chip superconducting quantum memories by optimizing materials and circuit design

S Ganjam, Y Wang, Y Lu, A Banerjee, CU Lei… - Nature …, 2024 - nature.com
The performance of superconducting quantum circuits for quantum computing has advanced
tremendously in recent decades; however, a comprehensive understanding of relaxation …

Disentangling losses in tantalum superconducting circuits

KD Crowley, RA McLellan, A Dutta, N Shumiya… - Physical Review X, 2023 - APS
Superconducting qubits are a leading system for realizing large-scale quantum processors,
but overall gate fidelities suffer from coherence times limited by microwave dielectric loss …

High-fidelity parametric beamsplitting with a parity-protected converter

Y Lu, A Maiti, JWO Garmon, S Ganjam, Y Zhang… - nature …, 2023 - nature.com
Fast, high-fidelity operations between microwave resonators are an important tool for
bosonic quantum computation and simulation with superconducting circuits. An attractive …