4 papers
Online learning of quantum states under structure
Akshay Bansal, Jiahui Liu
Quantum state tomography is fundamental to quantum information processing but becomes infeasible at scale due to the exponential growth of the state space. Shadow tomography allevi…
Divergence Inequalities with Applications in Ergodic Theory
Ian George, Alice Zheng, Akshay Bansal
The data processing inequality is central to information theory and motivates the study of monotonic divergences. However, it is not clear operationally we need to consider all suc…
Online learning of a panoply of quantum objects
Akshay Bansal, Ian George, Soumik Ghosh +2
In many quantum tasks, there is an unknown quantum object that one wishes to learn. An online strategy for this task involves adaptively refining a hypothesis to reproduce such an…
Impossibility of adversarial self-testing and secure sampling
Akshay Bansal, Atul Singh Arora, Thomas Van Himbeeck +1
Self-testing is the task where spatially separated Alice and Bob cooperate to deduce the inner workings of untrusted quantum devices by interacting with them in a classical manner.…