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quant-ph2026
Symmetry-resolved parent Hamiltonians for entangled bosonic cat resources
Šimon Bräuer, Klaus Mølmer
Schrödinger cat states, formed from superpositions of well-separated coherent states, are promising resources for bosonic quantum information. We construct parent Hamiltonians for…
quant-ph2026
Generalization of catability for parity-less cat states
Michal Matulík, Jan Provazník, 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…
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…