9 papers
The classical limit of quantum mechanics through coarse-grained measurements
Fatemeh Bibak, Carlo Cepollaro, Nicolás Medina Sánchez +2
Understanding how classical physics emerges from quantum mechanics remains a central problem in the foundations of physics. Here we derive a classical limit from finite-resolution…
Reconstruction of Quantum Fields: CCR, CAR and Transfields
Nicolás Medina Sánchez, Borivoje DakiÄ
One of the traditional ways of introducing bosons and fermions is through creation-annihilation algebras. Historically, these have been associated with emission and absorption proc…
Acquisition of delocalized information via classical and quantum carriers
Julian Maisriml, Sebastian Horvat, Borivoje DakiÄ
We investigate the information-theoretic power of spatial superposition by analyzing tasks in which infor- mation is locally encoded at multiple distant sites and must be acquired…
Post-processing optimization and optimal bounds for non-adaptive shadow tomography
Andrea Caprotti, Joshua Morris, Borivoje DakiÄ
Informationally overcomplete POVMs are known to outperform minimally complete measurements in many tomography and estimation tasks, and they also leave a purely classical freedom i…
Entanglement without Quantum Mechanics: Operational Constraints on the Quantum Signature
Samuel Schlegel, Borivoje DakiÄ, Flavio Del Santo
Entanglement is often regarded as an inherently quantum feature. We show that this does not have to be the case: under restricted operational access, classical correlations can app…
Testing Single Photon Entanglement using Self-Referential Measurements
Daniel Kun, Teodor Strömberg, Borivoje DakiÄ +2
Entanglement does not always require one particle per party. It was predicted some thirty years ago that a single photon traversing a beam splitter could violate a Bell inequality.…