activity
20192026
most citedEvaluating the Holevo Cramér-Rao bound for multi-parameter quantum metrology

123 citations · 128 across the 6 of their papers we have counts for

collaborators

6 papers

quant-ph2026

The limits of erasure-based postselection for quantum error mitigation

Sam J. Griffiths, Jamie Friel, Brian Vlastakis

In both classical and quantum error correction, heralded erasures are known to be easier to tolerate than unheralded general stochastic errors. Whilst an established benefit of los…

quant-ph2026

Developments in superconducting erasure qubits for hardware-efficient quantum error correction

Maria Violaris, Luciana Henaut, James Wills +3

Quantum computers are inherently noisy, and a crucial challenge for achieving large-scale, fault-tolerant quantum computing is to implement quantum error correction. A promising di…

cs.DS2025

-Motif: Parallel Subgraph Isomorphism via Tabular Operations for Scalable Layout Selection

Yulun Wang, Esteban Ginez, Jamie Friel +4

Subgraph isomorphism is a fundamental problem in graph analysis that seeks to find all instances of a pattern graph within a larger data graph while preserving structural relations…

quant-ph2025

QMIO: A tightly integrated hybrid HPCQC system

Javier Cacheiro, Álvaro C Sánchez, Russell Rundle +4

High-Performance Computing (HPC) systems are the most powerful tools that we currently have to solve complex scientific simulations. Quantum computing (QC) has the potential to enh…

quant-ph2020★ 5 cited

Attainability of the Holevo-Cramér-Rao bound for two-qubit 3D magnetometry

Jamie Friel, Pantita Palittapongarnpim, Francesco Albarelli +1

We study quantum-limited 3D magnetometry using two qubits. Two qubits form the smallest multi-qubit system for 3D magnetometry, the simultaneous estimation of three phases, as it i…

quant-ph2019★ 123 cited

Evaluating the Holevo Cramér-Rao bound for multi-parameter quantum metrology

Francesco Albarelli, Jamie F. Friel, Animesh Datta

Only with the simultaneous estimation of multiple parameters are the quantum aspects of metrology fully revealed. This is due to the incompatibility of observables. The fundamental…