3 papers
quant-ph2026
Symmetric Localizable Multipartite Quantum Measurements from Pauli Orbits
Jef Pauwels, Cyril Branciard, Alejandro Pozas-Kerstjens +1
While the structure of entangled quantum states is relatively well understood, the characterization of entangled measurements, especially in multipartite and high-dimensional setti…
quant-ph2026
How many systems can be dephased before the quantum switch becomes causally definite?
Yassine Benhaj, Kuntal Sengupta, Cyril Branciard
Quantum processes with indefinite causal order -- so-called causally nonseparable processes -- can exhibit various advantages over quantum circuits with a fixed or a well-defined c…
quant-ph2024
Network-Device-Independent Certification of Causal Nonseparability
Hippolyte Dourdent, Alastair A. Abbott, Ivan Å upiÄ +1
Causal nonseparability is the property underlying quantum processes incompatible with a definite causal order. So far it has remained a central open question as to whether any proc…