Advances in bosonic quantum error correction with Gottesman–Kitaev–Preskill Codes: Theory, engineering and applications

AJ Brady, A Eickbusch, S Singh, J Wu… - Progress in Quantum …, 2024 - Elsevier
Encoding quantum information into a set of harmonic oscillators is considered a hardware
efficient approach to mitigate noise for reliable quantum information processing. Various …

A superconducting dual-rail cavity qubit with erasure-detected logical measurements

KS Chou, T Shemma, H McCarrick, TC Chien… - Nature Physics, 2024 - nature.com
A critical challenge in develo** scalable quantum systems is correcting the accumulation
of errors while performing operations and measurements. It is known that systems where …

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 …

Coherent coupling and non-destructive measurement of trapped-ion mechanical oscillators

PY Hou, JJ Wu, SD Erickson, DC Cole, G Zarantonello… - Nature Physics, 2024 - nature.com
Precise quantum control and measurement of several harmonic oscillators, such as the
modes of the electromagnetic field in a cavity or of mechanical motion, are key for their use …

Dual-rail encoding with superconducting cavities

JD Teoh, P Winkel, HK Babla… - Proceedings of the …, 2023 - National Acad Sciences
The design of quantum hardware that reduces and mitigates errors is essential for practical
quantum error correction (QEC) and useful quantum computation. To this end, we introduce …

High-coherence kerr-cat qubit in 2d architecture

A Hajr, B Qing, K Wang, G Koolstra, Z Pedramrazi… - Physical Review X, 2024 - APS
The Kerr-cat qubit is a bosonic qubit in which multiphoton Schrödinger cat states are
stabilized by applying a two-photon drive to an oscillator with a Kerr nonlinearity. The …

Demonstrating a superconducting dual-rail cavity qubit with erasure-detected logical measurements

KS Chou, T Shemma, H McCarrick, TC Chien… - ar** scalable error-corrected quantum systems is the
accumulation of errors while performing operations and measurements. One promising …

Certifiable lower bounds of Wigner negativity volume and non-Gaussian entanglement with conditional displacement gates

LH Zaw - Physical Review Letters, 2024 - APS
In circuit and cavity quantum electrodynamics devices where control qubits are dispersively
coupled to high-quality-factor cavities, characteristic functions of cavity states can be directly …

Engineering multimode interactions in circuit quantum acoustodynamics

U von Lüpke, IC Rodrigues, Y Yang, M Fadel, Y Chu - Nature Physics, 2024 - nature.com
In recent years, important progress has been made towards encoding and processing
quantum information in the large Hilbert space of bosonic modes. Mechanical resonators …

Hamiltonian extrema of an arbitrary flux-biased Josephson circuit

A Miano, VR Joshi, G Liu, W Dai, PD Parakh, L Frunzio… - PRX Quantum, 2023 - APS
Flux-biased loops including one or more Josephson junctions are ubiquitous elements in
quantum information experiments based on superconducting circuits. These quantum …