High-on-off-ratio beam-splitter interaction for gates on bosonically encoded qubits

BJ Chapman, SJ de Graaf, SH Xue, Y Zhang, J Teoh… - PRX Quantum, 2023 - APS
Encoding a qubit in a high-quality superconducting microwave cavity offers the opportunity
to perform the first layer of error correction in a single device but presents a challenge: how …

Observation of Josephson harmonics in tunnel junctions

D Willsch, D Rieger, P Winkel, M Willsch, C Dickel… - Nature Physics, 2024 - nature.com
Approaches to developing large-scale superconducting quantum processors must cope with
the numerous microscopic degrees of freedom that are ubiquitous in solid-state devices …

Shaping photons: Quantum information processing with bosonic cQED

A Copetudo, CY Fontaine, F Valadares… - Applied Physics …, 2024 - pubs.aip.org
With its rich dynamics, the quantum harmonic oscillator is an innate platform for
understanding real-world quantum systems and could even excel as the heart of a quantum …

Double-Fourier engineering of Josephson energy-phase relationships applied to diodes

AM Bozkurt, J Brookman, V Fatemi, AR Akhmerov - SciPost Physics, 2023 - scipost.org
We present a systematic method to design arbitrary energy-phase relations using parallel
arms of two series Josephson tunnel junctions each. Our approach employs Fourier …

Autoparametric resonance extending the bit-flip time of a cat qubit up to 0.3 s

A Marquet, A Essig, J Cohen, N Cottet, A Murani… - Physical Review X, 2024 - APS
Cat qubits, for which logical| 0⟩ and| 1⟩ are coherent states|±α⟩ of a harmonic mode, offer
a promising route towards quantum error correction. Using dissipation to our advantage so …

Symmetries of the squeeze-driven Kerr oscillator

F Iachello, RG Cortiñas, F Pérez-Bernal… - Journal of Physics A …, 2023 - iopscience.iop.org
Symmetries of the squeeze-driven Kerr oscillator - IOPscience This site uses cookies. By
continuing to use this site you agree to our use of cookies. To find out more, see our Privacy and …

Dissipationless nonlinearity in quantum material Josephson diodes

C Schrade, V Fatemi - Physical Review Applied, 2024 - APS
Dissipationless nonlinearities for three-wave mixing are a key component of many
superconducting quantum devices, such as amplifiers and bosonic qubits. So far, such third …

Mapping Molecular Hamiltonians into Hamiltonians of Modular cQED Processors

N Lyu, A Miano, I Tsioutsios, RG Cortiñas… - Journal of Chemical …, 2023 - ACS Publications
We introduce a general method based on the operators of the Dyson-Masleev
transformation to map the Hamiltonian of an arbitrary model system into the Hamiltonian of a …

[PDF][PDF] Geometrical description and Faddeev-Jackiw quantization of electrical networks

A Parra-Rodriguez, IL Egusquiza - arXiv preprint arXiv …, 2023 - researchgate.net
In lumped-element electrical circuit theory, the problem of solving Maxwell's equations in the
presence of media is reduced to two sets of equations, the constitutive equations …

Faddeev-Jackiw quantisation of nonreciprocal quasi-lumped electrical networks

A Parra-Rodriguez, IL Egusquiza - arXiv preprint arXiv:2401.09120, 2024 - arxiv.org
Following a consistent geometrical description previously introduced in Parra-Rodriguez et
al.(2023), we present an exact method for obtaining canonically quantisable Hamiltonian …