228 citations · 3.3k across the 71 of their papers we have counts for
11 papers · 2 filters
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…