245 citations · 2.1k across the 68 of their papers we have counts for
68 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…
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 power of quantum catalytic local operations
Patryk Lipka-Bartosik, Jessica Bavaresco, Nicolas Brunner +1
A key result in entanglement theory is that the addition of a catalyst dramatically enlarges the set of possible state transformations via local operations and classical communicat…
Catalytic Activation of Bell Nonlocality
Jessica Bavaresco, Nicolas Brunner, Antoine Girardin +2
The correlations of certain entangled states can be perfectly simulated classically via a local model. Hence such states are termed Bell local, as they cannot lead to Bell inequali…
Partial independence suffices to rule out Real Quantum Theory experimentally
Mirjam Weilenmann, Nicolas Gisin, Pavel Sekatski
The role of complex quantities in quantum theory has been puzzling physicists since the beginnings. It is thus natural to ask whether, in order to describe our experiments, the mat…
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…
Bell nonlocality in quantum networks with unreliable sources: Loophole-free postelection via self-testing
Sadra Boreiri, Nicolas Brunner, Pavel Sekatski
We discuss Bell nonlocality in quantum networks with unreliable sources. Our main result is a condition on the observed data which ensures that inconclusive events can be safely di…
Topologically Robust Quantum Network Nonlocality
Sadra Boreiri, Tamas Krivachy, Pavel Sekatski +2
We discuss quantum network Bell nonlocality in a setting where the network structure is not fully known. More concretely, an honest user may trust their local network topology, but…
Joint-measurability and quantum communication with untrusted devices
Michele Masini, Marie Ioannou, Nicolas Brunner +2
Photon loss represents a major challenge for the implementation of quantum communication protocols with untrusted devices, e.g. in the device-independent (DI) or semi-DI approaches…
Noise-robust proofs of quantum network nonlocality
Sadra Boreiri, Bora Ulu, Nicolas Brunner +1
Quantum networks allow for novel forms of quantum nonlocality. By exploiting the combination of entangled states and entangled measurements, strong nonlocal correlations can be gen…
Custom Bell inequalities from formal sums of squares
Victor Barizien, Pavel Sekatski, Jean-Daniel Bancal
Bell inequalities play a key role in certifying quantum properties for device-independent quantum information protocols. It is still a major challenge, however, to devise Bell ineq…
Towards the device-independent certification of a quantum memory
Pavel Sekatski, Jean-Daniel Bancal, Marie Ioannou +2
Quantum memories represent one of the main ingredients of future quantum communication networks. Their certification is therefore a key challenge. Here we develop efficient certifi…
Calibration-Independent Certification of a Quantum Frequency Converter
Matthias Bock, Pavel Sekatski, Jean-Daniel Bancal +5
We report on a method to certify a unitary operation with the help of source and measurement apparatuses whose calibration throughout the certification process needs not be trusted…
Compatibility of projective measurements subject to white noise and loss
Pavel Sekatski
It is well known that when two or more quantum measurements suffer from imperfections they may lose their incompatibility. For a quantum system of finite dimension d we study the i…
Unlimited One-Way Steering
Pavel Sekatski, Florian Giraud, Roope Uola +1
This work explores the asymmetry of quantum steering in a setup using high-dimensional entanglement. We construct entangled states with the following properties: one party (A…
Simple Buehler-optimal confidence intervals on the average success probability of independent Bernoulli trials
Jean-Daniel Bancal, Pavel Sekatski
One-sided confidence intervals are presented for the average of non-identical Bernoulli parameters. These confidence intervals are expressed as analytical functions of the total nu…
Automated design of quantum optical experiments for device-independent quantum key distribution
Xavier Valcarce, Pavel Sekatski, Elie Gouzien +2
Device-independent quantum key distribution (DIQKD) reduces the vulnerability to side-channel attacks of standard QKD protocols by removing the need for characterized quantum devic…
Entanglement of trapped-ion qubits separated by 230 meters
V. Krutyanskiy, M. Galli, V. Krcmarsky +13
We report on an elementary quantum network of two atomic ions separated by 230 m. The ions are trapped in different buildings and connected with 520(2) m of optical fiber. At each…
Equivalence between simulability of high-dimensional measurements and high-dimensional steering
Benjamin D. M. Jones, Roope Uola, Thomas Cope +4
The effect of quantum steering arises from the judicious combination of an entangled state with a set of incompatible measurements. Recently, it was shown that this form of quantum…
Towards a minimal example of quantum nonlocality without inputs
Sadra Boreiri, Antoine Girardin, Bora Ulu +3
The network scenario offers interesting new perspectives on the phenomenon of quantum nonlocality. Notably, when considering networks with independent sources, it is possible to de…
Simulability of high-dimensional quantum measurements
Marie Ioannou, Pavel Sekatski, Sébastien Designolle +3
We investigate the compression of quantum information with respect to a given set of high-dimensional measurements. This leads to a notion of simulability, where we d…
Benchmarking single-photon sources from an auto-correlation measurement
Pavel Sekatski, Enky Oudot, Patrik Caspar +2
Here we argue that the probability that a given source produces exactly a single photon is a natural quantity to benchmark single-photon sources as it certifies the absence of mult…
Receiver-Device-Independent Quantum Key Distribution Protocols
Marie Ioannou, Pavel Sekatski, Alastair A. Abbott +3
We discuss quantum key distribution protocols and their security analysis, considering a receiver-device-independent (RDI) model. The sender's (Alice's) device is partially charact…
Certification of Genuine Multipartite Entanglement with General and Robust Device-independent Witnesses
Chao Zhang, Wen-Hao Zhang, Pavel Sekatski +12
Genuine multipartite entanglement represents the strongest type of entanglement, which is an essential resource for quantum information processing. Standard methods to detect genui…