From the 1 of 10 linked papers with an AI index.
10 papers
Higher-order covariance matrices for non-Gaussian quantum states
VojtÄch Kala, Petr Marek, Nicolas J. Cerf
The paper introduces higher-order covariance matrices built from quadrature monomials to characterize non‑Gaussian continuous‑variable quantum states, showing how they transform un…
Picosecond Schrödinger cat states for ultrafast optical quantum processing
Mamoru Endo, Kan Takase, Takefumi Nomura +12
Non-Gaussian states are essential resources for universal, fault-tolerant optical quantum computing, but their generation rate remains limited by low heralding probabilities and op…
Generalization of catability for parity-less cat states
Michal MatulÃk, Jan ProvaznÃk, Petr Marek +1
We extend the nullifier-based certification framework of catability from parity-defined coherent cat states to parity-less Kerr cat states. Since Kerr cats cannot be distinguished…
Catability as a metric for evaluating superposed coherent states
Å imon Bräuer, Jan ProvaznÃk, VojtÄch 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…
Environment-Assisted Decoherence Suppression of Optical Non-Gaussian States
Akihiro Machinaga, Naoki Aritomi, Ryoga Sakurada +10
Optical loss is a common bottleneck in photonic quantum information processing, undermining the quantum advantage over classical approaches. Although several countermeasures, such…
Witnesses of non-Gaussian features as lower bounds of stellar rank
Jan ProvaznÃk, Å imon Bräuer, VojtÄch 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…