Quantum Channel Marginal Problem

no code implementations • 22 Feb 2021 • Chung-Yun Hsieh, Matteo Lostaglio, Antonio Acín

Given a set of local dynamics, are they compatible with a global dynamics?

Quantum Physics Mathematical Physics Mathematical Physics

The original Wigner's friend paradox within a realist toy model

no code implementations • 26 Jan 2021 • Matteo Lostaglio, Joseph Bowles

The original Wigner's friend paradox is a gedankenexperiment involving an observer described by an external agent.

Quantum Physics

Certifying quantum signatures in thermodynamics and metrology via contextuality of quantum linear response

no code implementations • 2 Apr 2020 • Matteo Lostaglio

We identify a fundamental difference between classical and quantum dynamics in the linear response regime by showing that the latter is in general contextual.

Quantum Physics