7 papers
Quantum-Limited Blind Source Separation of Classical Light
Janis Nötzel, Janis Nötzel, Kiran Adhikari
Using the framework of quantum multiparameter estimation, we study the problem of separating independent thermal optical sources mixed by an unknown passive linear transformation,…
Entanglement-assisted authenticated BB84 protocol
Pol Julià Farré, Vladlen Galetsky, Soham Ghosh +2
In this work, we present a novel authenticated Quantum Key Distribution (QKD) protocol employing maximally entangled qubit pairs. In the absence of noise, we securely authenticate…
Infinite-fold Asymptotic Quantum Advantage in Classical Correlation Sensing
Janis Nötzel, Pere Munar-Vallespir
We study the hypothesis testing problem of distinguishing between correlated thermal noise and uncorrelated thermal noise of the same average energy on detectors in asymptotic…
Data Transmission over a Bosonic Arbitrarily Varying Quantum Channel
Janis Nötzel, Florian Seitz
Arbitrarily varying channels offer a powerful framework for analyzing the robustness of quantum communication systems, especially for classical-quantum models, where the analysis d…
Photonic processor benchmarking for variational quantum process tomography
Vladlen Galetsky, Paul Kohl, Janis Nötzel
We present a quantum-analogous experimental demonstration of variational quantum process tomography using an optical processor. This approach leverages classical one-hot encoding a…
Feasibility of Logical Bell State Generation in Memory Assisted Quantum Networks
Vladlen Galetsky, Nilesh Vyas, Alberto Comin +1
This study explores the feasibility of utilizing quantum error correction (QEC) to generate and store logical Bell states in heralded quantum entanglement protocols, crucial for qu…