Hippolyte Dourdent
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View article: Network-Device-Independent Certification of Causal Nonseparability
Network-Device-Independent Certification of Causal Nonseparability Open
Causal nonseparability is the property underlying quantum processes incompatible with a definite causal order. So far it has remained a central open question as to whether any process with a clear physical realisation can violate a causal …
View article: Network-Device-Independent Certification of Causal Nonseparability
Network-Device-Independent Certification of Causal Nonseparability Open
Causal nonseparability is the property underlying quantum processes incompatible with a definite causal order. So far it has remained a central open question as to whether any process with a clear physical realisation can violate a causal …
View article: Erratum: Quantum Circuits with Classical Versus Quantum Control of Causal Order [PRX Quantum 2, 030335 (2021)]
Erratum: Quantum Circuits with Classical Versus Quantum Control of Causal Order [PRX Quantum 2, 030335 (2021)] Open
Received 19 June 2023DOI:https://doi.org/10.1103/PRXQuantum.4.030901Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain a…
View article: Comparing the quantum switch and its simulations with energetically constrained operations
Comparing the quantum switch and its simulations with energetically constrained operations Open
Quantum mechanics allows processes to be superposed, leading to a genuinely\nquantum lack of causal structure. For example, the process known as the quantum\nswitch applies two operations ${\\cal A}$ and ${\\cal B}$ in a superposition of\n…
View article: Semi-Device-Independent Certification of Causal Nonseparability with Trusted Quantum Inputs
Semi-Device-Independent Certification of Causal Nonseparability with Trusted Quantum Inputs Open
While the standard formulation of quantum theory assumes a fixed background causal structure, one can relax this assumption within the so-called process matrix framework. Remarkably, some processes, termed causally nonseparable, are incomp…
View article: Comparing the quantum switch and its simulations with energetically-constrained operations
Comparing the quantum switch and its simulations with energetically-constrained operations Open
Quantum mechanics allows processes to be superposed, leading to a genuinely quantum lack of causal structure. For example, the process known as the quantum switch applies two operations ${\cal A}$ and ${\cal B}$ in a superposition of the t…
View article: Quantum Circuits with Classical Versus Quantum Control of Causal Order
Quantum Circuits with Classical Versus Quantum Control of Causal Order Open
Quantum supermaps are transformations that map quantum operations to quantum\noperations. It is known that quantum supermaps which respect a definite,\npredefined causal order between their input operations correspond to\nfixed-order quant…
View article: Semi-Device-Independent Certification of Causal Nonseparability with Trusted Quantum Inputs
Semi-Device-Independent Certification of Causal Nonseparability with Trusted Quantum Inputs Open
While the standard formulation of quantum theory assumes a fixed background causal structure, one can relax this assumption within the so-called process matrix framework. Remarkably, some processes, termed causally nonseparable, are incomp…
View article: A Quantum Gödelian Hunch
A Quantum Gödelian Hunch Open
What if the paradoxical nature of quantum theory could find its source in some undecidability analog to that of Gödel's incompleteness theorem ? This essay aims at arguing for such Gödelian hunch via two case studies. Firstly, using a narr…
View article: Contextuality, Witness of Quantum Weirdness
Contextuality, Witness of Quantum Weirdness Open
The notion of contextuality, which emerges from a theorem established by Simon Kochen and Ernst Specker (1960-1967) and by John Bell (1964-1966), is certainly one of the most fundamental aspects of quantum weirdness. If it is a questioning…
View article: Birefringent masks that are optimal for generating bottle fields: erratum
Birefringent masks that are optimal for generating bottle fields: erratum Open
A sign error in the handedness of the rotating eigenpolarization pattern is corrected. This correction implies that a bottle field can be produced using just a stress-engineered optical element, without the need for a half-wave plate.
View article: Birefringent masks that are optimal for generating bottle fields
Birefringent masks that are optimal for generating bottle fields Open
An optical bottle field containing a three-dimensional intensity null at the focal point can be generated by placing a spatially inhomogeneous birefringent mask at the pupil of an aplanatic high-NA focusing system. We derive the optimal bi…