activity
20232026
most citedOn the clique covering numbers of Johnson graphs

4 citations · 4 across the 5 of their papers we have counts for

collaborators

6 papers

quant-ph2026

Link-middle-cut lower bounds for Clifford circuit synthesis

Søren Fuglede Jørgensen

Minimizing the number of CNOT gates required to synthesize a Clifford operator is a central problem in quantum circuit optimization. We extend the link--middle--cut (LMC) framework…

quant-ph2026

Lower bounds for the CNOT-complexity of linear reversible operators

Søren Fuglede Jørgensen

The CNOT-complexity of an invertible matrix over is the minimum number of CNOT gates needed to synthesize the corresponding linear reversible operator. While the max…

quant-ph2026

Variance reduction methods in the estimation of Pauli sums

Søren Fuglede Jørgensen, Rafael Emilio Barfknecht, Patrick Ettenhuber +1

Accurately estimating expectation values of quantum observables with as few measurements as possible is crucial to many quantum computing applications. We introduce a framework tha…

quant-ph2025

On Exact Sizes of Minimal CNOT Circuits

Jens Emil Christensen, Søren Fuglede Jørgensen, Andreas Pavlogiannis +1

Computing a minimum-size circuit that implements a certain function is a standard optimization task. We consider circuits of CNOT gates, which are fundamental binary gates in rever…

math.CO2025★ 4 cited

On the clique covering numbers of Johnson graphs

Søren Fuglede Jørgensen

We initiate a study of the vertex clique covering numbers of Johnson graphs , the smallest numbers of cliques necessary to cover the vertices of those graphs. We prove ide…

cs.DS2023

Sublinear Time Shortest Path in Expander Graphs

Noga Alon, Allan Grønlund, Søren Fuglede Jørgensen +1

Computing a shortest path between two nodes in an undirected unweighted graph is among the most basic algorithmic tasks. Breadth first search solves this problem in linear time, wh…