9 citations · 16 across the 13 of their papers we have counts for
5 papers · 1 filter
Fundamental Limit on the Power of Entanglement Assistance in Quantum Communication
Lasse H. Wolff, Paula Belzig, Matthias Christandl +2
The optimal rate of reliable communication over a quantum channel can be enhanced by pre-shared entanglement. Whereas the enhancement may be unbounded in infinite-dimensional setti…
Learning pure quantum states (almost) without regret
Josep Lumbreras, Mikhail Terekhov, Marco Tomamichel
We initiate the study of sample-optimal quantum state tomography with minimal disturbance to the samples. Can we efficiently learn a precise description of a quantum state through…
Quantum Channel Simulation in Fidelity is no more difficult than State Splitting
Michael X. Cao, Rahul Jain, Marco Tomamichel
Characterizing the minimal communication needed for the quantum channel simulation is a fundamental task in the quantum information theory. In this paper, we show that, in fidelity…
On the composable security of weak coin flipping
Jiawei Wu, Yanglin Hu, Akshay Bansal +1
Weak coin flipping is a cryptographic primitive in which two mutually distrustful parties generate a shared random bit to agree on a winner via remote communication. While a stand-…
Linear bandits with polylogarithmic minimax regret
Josep Lumbreras, Marco Tomamichel
We study a noise model for linear stochastic bandits for which the subgaussian noise parameter vanishes linearly as we select actions on the unit sphere closer and closer to the un…