277 citations · 608 across the 17 of their papers we have counts for
17 papers
Critique of "Use of roster charts in the investigation and prosecution of nurses ..." by John O' Quigley
Richard D. Gill
The paper "Use of roster charts in the investigation and prosecution of nurses suspected of inflicting deliberate harm on patients" by Prof. John O'Quigley explores an interesting…
Further comments on "Is the moon there if nobody looks? Bell inequalities and physical reality"
Richard D. Gill
Kupczynski (2023) claims that Gill and Lambare (2022a, 2022b) misrepresent several of his published papers. This paper shows that the latest version of his "contextuality by defaul…
Bell's theorem is an exercise in the statistical theory of causality
Richard D. Gill
In this short note, I derive the Bell-CHSH inequalities as an elementary result in the present-day theory of statistical causality based on graphical models or Bayes' nets, defined…
Commentary: Is the moon there if nobody looks -- Bell inequalities and physical reality
Richard D. Gill, Justo P. Lambare
Marian Kupczynski(MK)is the author of a controversial paper published (2020) in the journal Frontiers in Physics. The work is built around a mathematical claim by MK which is actua…
Comment on: Bell tests explained by classical optics without quantum entanglement
Richard D. Gill
In a paper published in the journal Physics Essays in 2021, the author D.L. Mamas writes "A polarized photon interacts with a polarizer through the component of the photon's electr…
Optimal statistical analyses of Bell experiments
Richard D. Gill
We show how both smaller and more reliable p-values can be computed in Bell-type experiments by using statistical deviations from no-signalling equalities to reduce statistical noi…
Kupczynski's Contextual Locally Causal Probabilistic Models are constrained by Bell's theorem
Richard D. Gill, Justo Pastor Lambare
In a sequence of papers, Marian Kupczynski has argued that Bell's theorem can be circumvented if one takes correct account of contextual setting-dependent parameters describing mea…
Quantum Computation, Data Science, and Bell games
Richard D. Gill
I draw attention to statistical, probabilistic, computer science aspects of the highly related topics of the Bell game and of a possible future Quantum Internet.
Comment on "Quantum correlations are weaved by the spinors of the Euclidean primitives"
Richard D. Gill
I point out fatal mathematical errors in the paper "Quantum correlations are weaved by the spinors of the Euclidean primitives" by Joy Christian, published (2019) in the journal Ro…
Anna Karenina and The Two Envelopes Problem
R. D. Gill
The Anna Karenina principle is named after the opening sentence in the eponymous novel: Happy families are all alike; every unhappy family is unhappy in its own way. The Two Envelo…
Tomography and state reconstruction with superconducting single-photon detectors
Jelmer J. Renema, Giulia Frucci, Michiel J. A. de Dood +3
We perform quantum state reconstruction of coherent and thermal states with a detector which has an enhanced multiphoton response. The detector is based on superconducting nanowire…
A tight Tsirelson inequality for infinitely many outcomes
S. Zohren, P. Reska, R. D. Gill +1
We present a novel tight bound on the quantum violations of the CGLMP inequality in the case of infinitely many outcomes. Like in the case of Tsirelson's inequality the proof of ou…
The Monty Hall Problem is not a Probability Puzzle (it's a challenge in mathematical modelling)
Richard D. Gill
Suppose you're on a game show, and you're given the choice of three doors: Behind one door is a car; behind the others, goats. You pick a door, say No. 1, and the host, who knows w…
Schrödinger's cat meets Occam's razor
Richard D. Gill
We discuss V.P. Belavkin's (2007) approach to the Schrödinger cat problem and show its close relation to ideas based on superselection and interaction with the environment develope…
Separable Measurement Estimation of Density Matrices and its Fidelity Gap with Collective Protocols
E. Bagan, M. A. Ballester, R. D. Gill +2
We show that there exists a gap between the performance of separable and collective measurements in qubit mixed-state estimation that persists in the large sample limit. We charact…
State estimation for large ensembles
R. D. Gill, S. Massar
We consider the problem of estimating the state of a large but finite number of identical quantum systems. In the limit of large the problem simplifies. In particular the o…
Fisher information in quantum statistics
O. E. Barndorff-Nielsen, R. D. Gill
Braunstein and Caves (1994) proposed to use Helstrom's {\em quantum information} number to define, meaningfully, a metric on the set of all possible states of a given quantum syste…