Superconducting-qubit readout via low-backaction electro-optic transduction

RD Delaney, MD Urmey, S Mittal, BM Brubaker… - Nature, 2022 - nature.com
Entangling microwave-frequency superconducting quantum processors through optical light
at ambient temperature would enable means of secure communication and distributed …

Microwaves in quantum computing

JC Bardin, DH Slichter, DJ Reilly - IEEE journal of microwaves, 2021 - ieeexplore.ieee.org
Quantum information processing systems rely on a broad range of microwave technologies
and have spurred development of microwave devices and methods in new operating …

Propagating quantum microwaves: towards applications in communication and sensing

M Casariego, EZ Cruzeiro, S Gherardini… - Quantum Science …, 2023 - iopscience.iop.org
The field of propagating quantum microwaves is a relatively new area of research that is
receiving increased attention due to its promising technological applications, both in …

Magnetic field-resilient quantum-limited parametric amplifier

M Xu, R Cheng, Y Wu, G Liu, HX Tang - PRX Quantum, 2023 - APS
Superconducting parametric amplifiers are crucial components in microwave quantum
circuits for enabling quantum-limited signal readout. The best-performing such amplifiers are …

Performance of a kinetic inductance traveling-wave parametric amplifier at 4 kelvin: Toward an alternative to semiconductor amplifiers

M Malnou, J Aumentado, MR Vissers, JD Wheeler… - Physical review applied, 2022 - APS
Most microwave readout architectures in quantum computing or sensing rely on a
semiconductor amplifier at 4 K, typically a high-electron mobility transistor (HEMT). Despite …

Broadband SNAIL parametric amplifier with microstrip impedance transformer

D Ezenkova, D Moskalev, N Smirnov, A Ivanov… - Applied Physics …, 2022 - pubs.aip.org
Josephson parametric amplifiers are an important part of a modern superconducting
quantum computing platform and squeezed quantum states generation devices. Traveling …

Single-Shot Readout and Weak Measurement of a Tin-Vacancy Qubit in Diamond

EI Rosenthal, S Biswas, G Scuri, H Lee, AJ Stein… - Physical Review X, 2024 - APS
The negatively charged tin-vacancy center in diamond (SnV-) is an emerging platform for
building the next generation of long-distance quantum networks. This is due to the SnV-'s …

In situ amplification of spin echoes within a kinetic inductance parametric amplifier

W Vine, M Savytskyi, A Vaartjes, A Kringhøj… - Science …, 2023 - science.org
The use of superconducting microresonators together with quantum-limited Josephson
parametric amplifiers has enhanced the sensitivity of pulsed electron spin resonance (ESR) …

Dark‐State Induced Quantum Nonreciprocity

N Nefedkin, M Cotrufo, A Krasnok… - Advanced Quantum …, 2022 - Wiley Online Library
With the development of quantum technologies and their broad applications, the
phenomenon of reciprocity breaking has been evolving from an effective tool in classical …

Transmon-qubit readout using an in situ bifurcation amplification in the mesoscopic regime

R Dassonneville, T Ramos, V Milchakov, C Mori… - Physical Review …, 2023 - APS
We demonstrate a transmon-qubit readout based on the nonlinear response to a drive of
polaritonic meters in situ coupled to the qubit. Inside a three-dimensional readout cavity, we …