228 citations · 3.3k across the 71 of their papers we have counts for
72 papers
Quantum steering with imprecise measurements
Armin Tavakoli
We study quantum steering experiments without assuming that the trusted party can perfectly control their measurement device. Instead, we introduce a scenario in which these measur…
Implicit Neural Representation in Medical Imaging: A Comparative Survey
Amirali Molaei, Amirhossein Aminimehr, Armin Tavakoli +4
Implicit neural representations (INRs) have gained prominence as a powerful paradigm in scene reconstruction and computer graphics, demonstrating remarkable results. By utilizing n…
Semidefinite programming relaxations for quantum correlations
Armin Tavakoli, Alejandro Pozas-Kerstjens, Peter Brown +1
Semidefinite programs are convex optimisation problems involving a linear objective function and a domain of positive semidefinite matrices. Over the last two decades, they have be…
Compression of Entanglement Improves Quantum Communication
Yu Guo, Hao Tang, Jef Pauwels +7
Shared entanglement can significantly amplify classical correlations between systems interacting over a limited quantum channel. A natural avenue is to use entanglement of the same…
Post-quantum nonlocality in the minimal triangle scenario
Alejandro Pozas-Kerstjens, Antoine Girardin, Tamás Kriváchy +2
We investigate network nonlocality in the triangle scenario when all three parties have no input and binary outputs. Through an explicit example, we prove that this minimal scenari…
Resource-efficient high-dimensional entanglement detection via symmetric projections
Simon Morelli, Marcus Huber, Armin Tavakoli
We introduce two families of criteria for detecting and quantifying the entanglement of a bipartite quantum state of arbitrary local dimension. The first is based on measurements i…
Weak entanglement improves quantum communication using only product measurements
Amélie Piveteau, Alastair A. Abbott, Sadiq Muhammad +2
We show that weakly entangled states can improve communication over a qubit channel using only separate, interference-free, measurements of individual photons. We introduce a commu…
Correspondence between entangled states and entangled bases under local transformations
Florian Pimpel, Martin J. Renner, Armin Tavakoli
We investigate whether pure entangled states can be associated to a measurement basis in which all vectors are local unitary transformations of the original state. We prove that fo…
Certification of non-classicality in all links of a photonic star network without assuming quantum mechanics
Ning-Ning Wang, Alejandro Pozas-Kerstjens, Chao Zhang +6
Networks composed of independent sources of entangled particles that connect distant users are a rapidly developing quantum technology and an increasingly promising test-bed for fu…
Quantum key distribution rates from semidefinite programming
Mateus Araújo, Marcus Huber, Miguel Navascués +2
Computing the key rate in quantum key distribution (QKD) protocols is a long standing challenge. Analytical methods are limited to a handful of protocols with highly symmetric meas…
Almost qudits in the prepare-and-measure scenario
Jef Pauwels, Stefano Pironio, Erik Woodhead +1
Quantum communication is often investigated in scenarios where only the dimension of Hilbert space is known. However, assigning a precise dimension is often an approximation of wha…
Classical Cost of Transmitting a Qubit
Martin J. Renner, Armin Tavakoli, Marco Túlio Quintino
We consider general prepare-and-measure scenarios in which Alice can transmit qubit states to Bob, who can perform general measurements in the form of positive operator-valued meas…
Entanglement-assisted quantum communication with simple measurements
Amélie Piveteau, Jef Pauwels, Emil Håkansson +3
Dense coding is the seminal example of how entanglement can boost qubit communication, from sending one bit to sending two bits. This is made possible by projecting separate partic…
Entanglement swapping and quantum correlations via Elegant Joint Measurements
Cen-Xiao Huang, Xiao-Min Hu, Yu Guo +8
We use hyper-entanglement to experimentally realize deterministic entanglement swapping based on quantum Elegant Joint Measurements. These are joint projections of two qubits onto…
Adaptive advantage in entanglement-assisted communications
Jef Pauwels, Stefano Pironio, Emmanuel Zambrini Cruzeiro +1
Entanglement is known to boost the efficiency of classical communication. In distributed computation, for instance, exploiting entanglement can reduce the number of communicated bi…
Recycling nonlocality in a quantum network
Ya-Li Mao, Zheng-Da Li, Anna Steffinlongo +6
It has recently been discovered that the nonlocality of an entangled qubit pair can be recycled for several Bell experiments. Here, we go beyond standard Bell scenarios and investi…
Entanglement detection with imprecise measurements
Simon Morelli, Hayata Yamasaki, Marcus Huber +1
We investigate entanglement detection when the local measurements only nearly correspond to those intended. This corresponds to a scenario in which measurement devices are not perf…
Projective measurements are sufficient for recycling nonlocality
Anna Steffinlongo, Armin Tavakoli
Unsharp measurements are widely seen as the key resource for recycling the nonlocality of an entangled state shared between several sequential observers. Contrasting this, we here…
Certification of a Nonprojective Qudit Measurement using Multiport Beamsplitters
Daniel Martínez, Esteban S. Gómez, Jaime Cariñe +5
Generalised quantum measurements go beyond the textbook concept of a projection onto an orthonormal basis in Hilbert space. They are not only of fundamental relevance but have also…
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…
Entanglement in prepare-and-measure scenarios: many questions, a few answers
Jef Pauwels, Armin Tavakoli, Erik Woodhead +1
Entanglement and quantum communication are paradigmatic resources in quantum information science leading to correlations between systems that have no classical analogue. Correlatio…
Operational nonclassicality in minimal autonomous thermal machines
Jonatan Bohr Brask, Fabien Clivaz, Géraldine Haack +1
Thermal machines exploit interactions with multiple heat baths to perform useful tasks, such as work production and refrigeration. In the quantum regime, tasks with no classical co…
Full network nonlocality
Alejandro Pozas-Kerstjens, Nicolas Gisin, Armin Tavakoli
Networks have advanced the study of nonlocality beyond Bell's theorem. Here, we introduce the concept of full network nonlocality, which describes correlations that necessitate all…
Bell nonlocality in networks
Armin Tavakoli, Alejandro Pozas-Kerstjens, Ming-Xing Luo +1
Bell's theorem proves that quantum theory is inconsistent with local physical models. It has propelled research in the foundations of quantum theory and quantum information science…