Nicolas Brunner

Nonlocality of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>W</mml:mi></mml:math>and Dicke states subject to losses

2015 · Physical Review A

We discuss the nonlocality of $W$ and Dicke states subject to losses. We consider two noise models, namely, loss of excitations and loss of particles, and investigate how much loss can be tolerated such that …

Semi-device-independent characterization of multipartite entanglement of states and measurements

2018 · Physical Review A

The semi-device-independent framework allows one to draw conclusions about properties of an unknown quantum system under weak assumptions. Here we present a semi-device-independent scheme for the characterization of multipartite entanglement based around a game played …

Noise-Robust and Loss-Tolerant Quantum Steering with Qudits

2022 · arXiv (Cornell University)

A primary requirement for a robust and unconditionally secure quantum network is the establishment of quantum nonlocal correlations over a realistic channel. While loophole-free tests of Bell nonlocality allow for entanglement certification in such a …

Certifying high-dimensional quantum channels

2024 · arXiv (Cornell University)

The use of high-dimensional systems for quantum communication opens interesting perspectives, such as increased information capacity and noise resilience. In this context, it is crucial to certify that a given quantum channel can reliably transmit …