3 papers
quant-ph2026
No extension of the Quantum Tensor Product admits a Superposition principle
Vincenzo Fiorentino, Kuntal Sengupta
Textbook quantum superposition refers to the feature that certain linear combinations of Hilbert space rays, each representing a valid quantum state, are themselves valid states. T…
quant-ph2025
Correlation Self-Testing of Quantum Theory against Generalised Probabilistic Theories with Restricted Relabelling Symmetry
Kuntal Sengupta, Mirjam Weilenmann, Roger Colbeck
Correlation self-testing of quantum theory involves identifying a task or set of tasks whose optimal performance can be achieved only by theories that can realise the same set of c…
quant-ph2024
Achieving Maximal Causal Indefiniteness in a Maximally Nonlocal Theory
Kuntal Sengupta
Quantum theory allows for the superposition of causal orders between operations, i.e., for an indefinite causal order; an implication of the principle of quantum superposition. Sin…