Superconducting sensors and methods in geophysical applications

R Stolz, M Schmelz, V Zakosarenko… - Superconductor …, 2021 - iopscience.iop.org
More than 50 years ago superconducting quantum interference devices (SQUIDs) were
invented. Since then many applications opened up. Already in a 1980 workshop (Weinstock …

[HTML][HTML] Photonic quantum metrology

E Polino, M Valeri, N Spagnolo, F Sciarrino - AVS Quantum Science, 2020 - pubs.aip.org
Quantum metrology is one of the most promising applications of quantum technologies. The
aim of this research field is the estimation of unknown parameters exploiting quantum …

Colloquium: Quantum limits to the energy resolution of magnetic field sensors

MW Mitchell, S Palacios Alvarez - Reviews of Modern Physics, 2020 - APS
The energy resolution per bandwidth ER is a figure of merit that combines the field
resolution, bandwidth or duration of the measurement, and size of the sensed region …

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 …

Quantum sensing in tweezer arrays: Optical magnetometry on an individual-atom sensor grid

D Schäffner, T Schreiber, F Lenz, M Schlosser, G Birkl - PRX Quantum, 2024 - APS
We implement a scalable platform for quantum sensing comprising hundreds of sites
capable of holding individual laser-cooled atoms and demonstrate the applicability of this …

Improving qubit coherence using closed-loop feedback

A Vepsäläinen, R Winik, AH Karamlou… - Nature …, 2022 - nature.com
Superconducting qubits are a promising platform for building a larger-scale quantum
processor capable of solving otherwise intractable problems. In order for the processor to …

Remote sensing of a levitated superconductor with a flux-tunable microwave cavity

P Schmidt, R Claessen, G Higgins, J Hofer… - Physical Review …, 2024 - APS
We present a cavity-electromechanical system comprising a superconducting quantum
interference device which is embedded in a microwave resonator and coupled via a pickup …

Heisenberg-limited single-mode quantum metrology in a superconducting circuit

W Wang, Y Wu, Y Ma, W Cai, L Hu, X Mu, Y Xu… - Nature …, 2019 - nature.com
Two-mode interferometers lay the foundations for quantum metrology. Instead of exploring
quantum entanglement in the two-mode interferometers, a single bosonic mode also …

SQUIDs for magnetic and electromagnetic methods in mineral exploration

R Stolz, M Schiffler, M Becken, A Thiede… - Mineral Economics, 2022 - Springer
Research on quantum sensors for the detection of magnetic fields (quantum
magnetometers) is one of the fast-moving areas of Quantum Technologies. Since there exist …

Single-quadrature quantum magnetometry in cavity electromagnonics

MS Ebrahimi, A Motazedifard, MB Harouni - Physical Review A, 2021 - APS
A scheme of an ultrasensitive magnetometer in the cavity quantum electromagnonics is
proposed, where the intracavity microwave mode is coupled to a magnonic mode via …