4 papers
Symmetry-Resolved Parent Hamiltonians for Entangled Bosonic Cat Resources
Šimon Bräuer, Klaus Mølmer
We derive parent Hamiltonians in terms of oscillator operators for multimode bosonic cat resource states. The construction separates a universal branch Hamiltonian, which confines…
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…
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…
Generalized squeezing as a witness
Šimon Bräuer, Tomáš Opatrný, Petr Marek
Quantum systems can be prepared in an infinite continuum of states, but only some of them can be used as resources for quantum technologies. Discerning whether a specific quantum s…