228 citations · 648 across the 28 of their papers we have counts for
29 papers
Information causality does not single out the set of quantum correlations
Marco Pompili, Mirjam Weilenmann
Information causality (IC) was introduced as a physical principle that imposes constraints on the non-local correlations between two parties (Alice and Bob) in a Bell scenario. Spe…
Multi-copy and Catalytic Superactivation of Genuine Multipartite Nonlocality
Bora Ulu, Mirjam Weilenmann, Nicolas Brunner
Genuine multipartite Bell nonlocality (GMNL) aims at capturing correlations between many distant observers that are globally Bell nonlocal. A commonly used definition for GMNL is b…
Generalised contextuality of continuous variable quantum theory can be revealed with a single projective measurement
Pauli Jokinen, Mirjam Weilenmann, Martin Plávala +3
Generalized contextuality is a possible indicator of non-classical behaviour in quantum information theory. In finite-dimensional systems, this is justified by the fact that noncon…
Correlation Self-Testing of Quantum Theory against Generalised Probabilistic Theories with Restricted Relabelling Symmetry
Kuntal Sengupta, Mirjam Weilenmann, Roger Colbeck
Correlation self-testing of quantum theory involves identifying a task or set of tasks whose optimal performance can be achieved only by theories that can realise the same set of c…
Timed demolition measurements
Konstantinos Manos, Mirjam Weilenmann, Miguel Navascues
Picture an experimental scenario where a closed quantum system, evolving through a time-independent Hamiltonian, is subject to a demolition measurement at a chosen time. The Hamilt…
Device Independent Quantum Key Activation
Bora Ulu, Nicolas Brunner, Mirjam Weilenmann
Device-independent quantum key distribution (DIQKD) allows two distant parties to establish a secret key, based only on the observed Bell nonlocal distribution. It remains however,…
Practical Advantage of Classical Communication in Entanglement Detection
Wen-Bo Xing, Min-Yu Lv, Lingxia Zhang +9
Entanglement is the cornerstone of quantum communication, yet conventional detection relies solely on local measurements. In this work, we present a unified theoretical and experim…
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…
No-broadcasting characterizes operational contextuality
Pauli Jokinen, Mirjam Weilenmann, Martin Plávala +3
Operational contextuality forms a rapidly developing subfield of quantum information theory. However, the characterization of the quantum mechanical entities that fuel the phenomen…
Memory attacks in network nonlocality and self-testing
Mirjam Weilenmann, Costantino Budroni, Miguel Navascues
We study what can or cannot be certified in communication scenarios where the assumption of independence and identical distribution (iid) between experimental rounds fails. In this…
Tsirelson's Inequality for the Precession Protocol is Maximally Violated by Quantum Theory
Lin Htoo Zaw, Mirjam Weilenmann, Valerio Scarani
The precession protocol involves measuring , the probability that a uniformly precessing observable (like the position of a harmonic oscillator or a coordinate undergoing spat…
Monogamy relations for relativistically causal correlations
Mirjam Weilenmann
Non-signalling conditions encode minimal requirements that any (quantum) systems must satisfy in order to be consistent with special relativity. Recent works have argued that in sc…
Optimisation of time-ordered processes in the finite and asymptotic regime
Mirjam Weilenmann, Costantino Budroni, Miguel Navascues
Many problems in quantum information theory can be formulated as optimizations over the sequential outcomes of dynamical systems subject to unpredictable external influences. Such…
Multi-system measurements in generalized probabilistic theories and their role in information processing
Giorgos Eftaxias, Mirjam Weilenmann, Roger Colbeck
Generalized probabilistic theories (GPTs) provide a framework in which a range of possible theories can be examined, including classical theory, quantum theory and those beyond. In…
Advantages of multi-copy nonlocality distillation and its application to minimizing communication complexity
Giorgos Eftaxias, Mirjam Weilenmann, Roger Colbeck
Nonlocal correlations are a central feature of quantum theory, and understanding why quantum theory has a limited amount of nonlocality is a fundamental problem. Since nonlocality…
Testing real quantum theory in an optical quantum network
Zheng-Da Li, Ya-Li Mao, Mirjam Weilenmann +12
Quantum theory is commonly formulated in complex Hilbert spaces. However, the question of whether complex numbers need to be given a fundamental role in the theory has been debated…
Quantum theory based on real numbers can be experimentally falsified
Marc-Olivier Renou, David Trillo, Mirjam Weilenmann +5
While complex numbers are essential in mathematics, they are not needed to describe physical experiments, expressed in terms of probabilities, hence real numbers. Physics however a…
Optimized detection of high-dimensional entanglement
Xiao-Min Hu, Wen-Bo Xing, Yu Guo +9
Entanglement detection is one of the most conventional tasks in quantum information processing. While most experimental demonstrations of high-dimensional entanglement rely on fide…
Quantum Preparation Games
Mirjam Weilenmann, Edgar A. Aguilar, Miguel Navascues
A preparation game is a task whereby a player sequentially sends a number of quantum states to a referee, who probes each of them and announces the measurement result. The measurem…
Towards correlation self-testing of quantum theory in the adaptive Clauser-Horne-Shimony-Holt game
Mirjam Weilenmann, Roger Colbeck
Correlation self-testing of a theory addresses the question of whether we can identify the set of correlations realisable in a theory from its performance in a particular informati…
Self-testing of physical theories, or, is quantum theory optimal with respect to some information-processing task?
Mirjam Weilenmann, Roger Colbeck
Self-testing usually refers to the task of taking a given set of observed correlations that are assumed to arise via a process that is accurately described by quantum theory, and t…
Entanglement Detection Beyond Measuring Fidelities
Mirjam Weilenmann, Benjamin Dive, David Trillo +2
One of the most widespread methods to determine if a quantum state is entangled, or to quantify its entanglement dimensionality, is by measuring its fidelity with respect to a pure…
Analysing causal structures in generalised probabilistic theories
Mirjam Weilenmann, Roger Colbeck
Causal structures give us a way to understand the origin of observed correlations. These were developed for classical scenarios, but quantum mechanical experiments necessitate thei…
Smooth entropy in axiomatic thermodynamics
Mirjam Weilenmann, Lea Krämer Gabriel, Philippe Faist +1
Thermodynamics can be formulated in either of two approaches, the phenomenological approach, which refers to the macroscopic properties of systems, and the statistical approach, wh…