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quant-ph2026
Improved regret bounds for structured online learning of quantum states
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…
quant-ph2024
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…
quant-ph2024
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.…