3 papers
quant-ph2026
Quantum Interference Needs Convention: Overlap-Determinability and Unified No-Superposition Principle
Jeongho Bang, Kyoungho Cho, Ki Hyuk Yee
Quantum superposition is often phrased as the ability to add state vectors. In practice, however, the physical quantity is a ray (a rank-one projector), so each input specifies onl…
quant-ph2026
Learning at the Edge of Causality: Optimal Learning-Sample Complexity from No-Signaling Constraints
Jeongho Bang, Kyoungho Cho, Jeongwoo Jae
What ultimately fixes the sample cost of quantum learning -- algorithmic ingenuity or physical law? We study this question in an arena where computation, learning, and causality co…
quant-ph2025
Entangling Power and Its Deviation: A Quantitative Analysis on Input-State Dependence and Variability in Entanglement Generation
Kyoungho Cho, Jeongho Bang
Quantifying the entangling capability of quantum operations is a fundamental task in quantum information science. Traditionally, this capability is measured by the entangling power…