11 papers
Quantum Noncommutativity Uniquely Determines Relative Entropy
Gilad Gour
Quantum relative entropy is a core concept in physics, governing the limits of communication, thermodynamic irreversibility and quantum resource conversion. However, the requiremen…
Fundamental limits for thermodynamic control with quantum feedback
Kaiyuan Ji, Gilad Gour, Mark M. Wilde
The study of feedback control inspired by Maxwell's demon is central to the understanding of the relationship between thermodynamics and information. In this paper, we establish fu…
Optimal Trace Inequalities for Single-Shot Quantum Information
Gilad Gour
Single-shot quantum information theory is governed not only by entropy exponents, but also by the finite-resource constants that multiply them. These constants directly affect the…
Optimal Universal Bounds for Quantum Divergences
Gilad Gour
We identify a universal structural principle underlying the smoothing of classical divergences: the optimizer of the smoothing problem is a clipped probability vector, independentl…
Instability as a Quantum Resource
Goni Yoeli, Gilad Gour
We consolidate coherence, athermality, and nonuniformity as sub-resources within an underlying quantum resource theory: instability. We formulate instability axiomatically as the t…
Quantum Reverse Shannon Theorem Simplified
Gilad Gour
We revisit the quantum reverse Shannon theorem, a central result in quantum information theory that characterizes the resources needed to simulate quantum channels when entanglemen…