Linear Cross-Entropy Certification of Quantum Computational Advantage in Gaussian Boson Sampling

Autor: Javier Martínez-Cifuentes, Hubert de Guise, Nicolás Quesada

Publikováno v: PRX Quantum, Vol 5, Iss 4, p 040312 (2024)

Validation of quantum advantage claims in the context of Gaussian boson sampling (GBS) currently relies on providing evidence that the experimental samples genuinely follow their corresponding ground truth, i.e., the theoretical model of the experime

Externí odkaz: https://doaj.org/article/4d101228d8ef4252a665cecc4d93d09b

Generalized interference of fermions and bosons

Autor: Dylan Spivak, Murphy Yuezhen Niu, Barry C. Sanders, Hubert de Guise

Publikováno v: Physical Review Research, Vol 4, Iss 2, p 023013 (2022)

Using tools from representation theory, we derive expressions for the coincidence rate of partially-distinguishable particles in an interferometry experiment. Our expressions are valid for either bosons or fermions, and for any number of particles. I

Externí odkaz: https://doaj.org/article/305afb8a5ea64682b17dab991bd29851

$SU(1,1)$ covariant $s$-parametrized maps

Autor: Ulrich Seyfarth, Hubert de Guise, Andrei B. Klimov, Luis L. Sánchez-Soto

Publikováno v: E-Prints Complutense. Archivo Institucional de la UCM
instname
E-Prints Complutense: Archivo Institucional de la UCM
Universidad Complutense de Madrid

We propose a practical recipe to compute the ${s}$-parametrized maps for systems with $SU(1,1)$ symmetry using a connection between the ${Q}$ and ${P} $ symbols through the action of an operator invariant under the group. The particular case of the s

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::de7816a85401f47a7256768939c5bf06
http://arxiv.org/abs/2012.02993

Generalized Multiphoton Quantum Interference

Autor: Max Tillmann, Si-Hui Tan, Sarah E. Stoeckl, Barry C. Sanders, Hubert de Guise, René Heilmann, Stefan Nolte, Alexander Szameit, Philip Walther

Publikováno v: Physical Review X, Vol 5, Iss 4, p 041015 (2015)

Nonclassical interference of photons lies at the heart of optical quantum information processing. Here, we exploit tunable distinguishability to reveal the full spectrum of multiphoton nonclassical interference. We investigate this in theory and expe

Externí odkaz: https://doaj.org/article/92064b1b989342469d0d341edd05339b

Sum rules in multiphoton coincidence rates

Autor: Hubert de Guise, David Amaro-Alcalá, Dylan Spivak

Publikováno v: Physics Letters A. 384:126459

We show that sums of carefully chosen coincidence rates in a multiphoton interferometry experiment can be simplified by replacing the original unitary scattering matrix with a coset matrix containing $0$s. The number and placement of these $0$s reduc

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3100d1d63c779b3b8f29989bac4a18db
https://doi.org/10.1016/j.physleta.2020.126459