Coherent Control of a Long-Lived Nuclear Memory Spin in a Germanium-Vacancy Multi-Qubit Node

N Grimm, K Senkalla, PJ Vetter, J Frey, P Gundlapalli… - Physical Review Letters, 2025 - APS
The ability to process and store information on surrounding nuclear spins is a major
requirement for group-IV color center-based repeater nodes. We demonstrate coherent …

Optimal function estimation with photonic quantum sensor networks

J Bringewatt, A Ehrenberg, T Goel, AV Gorshkov - Physical Review Research, 2024 - APS
The problem of optimally measuring an analytic function of unknown local parameters each
linearly coupled to a qubit sensor is well understood, with applications ranging from field …

Quantum Advantage in Distributed Sensing with Noisy Quantum Networks

A Zang, A Kolar, A Gonzales, J Chung, SK Gray… - ar**, field sensing, and
precision measurements within fundamental physics. With the advent of distributed quantum …

Heisenberg-limited continuous-variable distributed quantum metrology with arbitrary weights

W Ge, K Jacobs - arxiv preprint arxiv:2412.01074, 2024 - arxiv.org
Distributed quantum metrology (DQM) enables the estimation of global functions of d
distributed parameters beyond the capability of separable sensors. To estimate an arbitrary …

Randomized measurements as a tool in quantum information processing

S Imai - 2023 - dspace.ub.uni-siegen.de
With limited control over quantum systems, how can we extract information about them and
characterize their properties? This thesis addresses this question from several perspectives …