51 citations · 224 across the 30 of their papers we have counts for
30 papers
Quantum models of interaction Hamiltonians and their paradoxes
Nicolas Gisin, Serge Massar, Jef Pauwels +1
In quantum physics it is commonplace to model the interaction of remote systems with a many-body Hamiltonian. Taking such an action-at-a-distance description {\it à la lettre} lead…
The quantum supremum of the Bell inequality is not attained in finite dimension
Jef Pauwels
In 2010, Pál and Vértesi found a family of finite-dimensional strategies for the Bell inequality whose optimized values appeared to converge as the local Hilbert-space d…
The Entanglement Content of Quantum Measurement Bases
Jef Pauwels, Otfried Gühne
Bell-state measurements are essential ingredients in many protocols for quantum information processing, ranging from quantum teleportation and dense coding to entanglement distribu…
Uncountably many inequivalent maximally entangled measurements for two qutrits
Elna Svegborn, Jef Pauwels, Nicolas Gisin +1
Every two-qubit measurement basis composed of maximally entangled eigenstates can be transformed into the Bell basis via local unitary operations. For higher dimensions, in contras…
Tunable Families of Multiqubit Elegant Joint Measurements
Jef Pauwels, Nicolas Gisin
We give a closed-form construction of the -qubit Elegant Joint Measurement (EJM) proposed in [PRL \textbf{136}, 190201 (2026)] and show that it is part of a tunable family of me…
Bipartite Bound Information Exists
Jef Pauwels, Nicolas Gisin, Renato Renner
There exist bipartite quantum states that cost entanglement to create, yet from which no singlet can be distilled. This extreme irreversibility is known as bound entanglement. A qu…
Certification of the genuine resolution of photon number resolving detectors
Jef Pauwels, Towsif Taher, Roope Uola +3
Photon-number-resolving (PNR) detectors are essential components of photonic quantum technologies, yet thus far, no practical metric exists to certify how many photons they can gen…
Quantum correlations in prepare-and-measure scenarios and their semi-device-independent applications
Jonatan Bohr Brask, Nicolas Brunner, Jef Pauwels +2
A key aspect in quantum information is to understand the advantage offered by quantum systems over classical ones in communication tasks. In recent years, a fundamental approach to…
Stronger Welch Bounds and Optimal Approximate -Designs
Riccardo Castellano, Dmitry Grinko, Sadra Boreiri +2
The question of how well a finite ensemble of quantum states can approximate Haar randomness is relevant in many areas of quantum physics. Here we consider this problem from a geom…
Bell and EPR experiments with signalling data
Lucas Maquedano, Sophie Egelhaaf, Amro Abou-Hachem +4
The no-signalling principle is a fundamental assumption in Bell-inequality and quantum-steering experiments. Nonetheless, experimental imperfections can lead to apparent violations…
All Entangled States are Nonlocal and Self-Testable in the Broadcast Scenario
Pavel Sekatski, Jef Pauwels
Entanglement and Bell nonlocality are known to be inequivalent: there exist entangled states that admit a local hidden-variable model for all local measurements. Here we show that…
The Multiqubit Elegant Joint Measurement
Jef Pauwels, Nicolas Gisin
The Elegant Joint Measurement (EJM) is a highly symmetric, partially entangled two-qubit measurement whose local marginals form a regular tetrahedron on the Bloch sphere and which…
Symmetric Localizable Multipartite Quantum Measurements from Pauli Orbits
Jef Pauwels, Cyril Branciard, Alejandro Pozas-Kerstjens +1
While the structure of entangled quantum states is relatively well understood, the characterization of entangled measurements, especially in multipartite and high-dimensional setti…
Quantum inputs in the prepare-and-measure scenario and stochastic teleportation
Elna Svegborn, Jef Pauwels, Armin Tavakoli
We investigate prepare-and-measure scenarios in which a sender and a receiver use entanglement to send quantum information over a channel with limited capacity. We formalise this f…
Quantum stochastic communication via high-dimensional entanglement
Chao Zhang, Jia-Le Miao, Xiao-Min Hu +6
Entanglement has the ability to enhance the transmission of classical information over a quantum channel. However, fully harvesting this advantage typically requires complex entang…
Certification of quantum correlations and DIQKD at arbitrary distances through routed Bell tests
Pavel Sekatski, Jef Pauwels, Edwin Peter Lobo +2
Transmission loss represents a major obstacle to the device-independent certification of quantum correlations over long distances, limiting applications such as device-independent…
Prepare-and-measure scenarios with photon-number constraints
Carles Roch i Carceller, Jef Pauwels, Stefano Pironio +1
We study correlations in the prepare-and-measure scenario when quantum communication is constrained by photon-number statistics. Such constraints are natural and practical control…
Holographic (Eternal) Inflation
Thomas Hertog, Jef Pauwels, Victoria Venken
We identify a minisuperspace of complex deformations of ABJM theory for which the partition function specifies the amplitude of an eternally inflating universe. The boundary theory…
Classification of joint quantum measurements based on entanglement cost of localization
Jef Pauwels, Alejandro Pozas-Kerstjens, Flavio Del Santo +1
Despite their importance in quantum theory, joint quantum measurements remain poorly understood. An intriguing conceptual and practical question is whether joint quantum measuremen…
Certifying measurement incompatibility in prepare-and-measure and Bell scenarios
Sophie Egelhaaf, Jef Pauwels, Marco Túlio Quintino +1
We consider the problem of certifying measurement incompatibility in a prepare-and-measure (PM) scenario. We present different families of sets of qubit measurements which are inco…
Binarisation of multi-outcome measurements in high-dimensional quantum correlation experiments
Armin Tavakoli, Roope Uola, Jef Pauwels
High-dimensional systems are an important frontier for photonic quantum correlation experiments. These correlation tests commonly prescribe measurements with many possible outcomes…
Information capacity of quantum communication under natural physical assumptions
Jef Pauwels, Stefano Pironio, Armin Tavakoli
The quantum prepare-and-measure scenario has been studied under various physical assumptions on the emitted states. Here, we first discuss how different assumptions are conceptuall…
Device-Independent Quantum Key Distribution Based on Routed Bell Tests
Tristan Le Roy-Deloison, Edwin Peter Lobo, Jef Pauwels +1
Photon losses are the main obstacle to fully photonic implementations of device-independent quantum key distribution (DIQKD). Motivated by recent work showing that routed Bell scen…
Certifying long-range quantum correlations through routed Bell tests
Edwin Peter Lobo, Jef Pauwels, Stefano Pironio
Losses in the transmission channel, which increase with distance, pose a major obstacle to photonics demonstrations of quantum nonlocality and its applications. Recently, Chaturved…