3 papers
quant-ph2026
Witnesses of non-Gaussian features as lower bounds of stellar rank
Jan Provazník, Šimon Bräuer, Vojtěch Kala +2
Quantum non-Gaussian states and operations serve as fundamental resources for universal quantum computation, error correction, and high-precision metrology, extending beyond the Ga…
quant-ph2025
Optical states with higher stellar rank
Jan Provazník, Olga Solodovnikova, Radim Filip +1
Quantum non-Gaussian states of traveling light fields are crucial components of quantum information processing protocols; however, their preparation is experimentally challenging.…
quant-ph2025
Catability as a metric for evaluating superposed coherent states
Šimon Bräuer, Jan Provazník, Vojtěch Kala +1
Superposed coherent states are central to quantum technologies, yet their reliable identification remains a challenge, especially in noisy or resource-constrained settings. We intr…