11 papers
Resource theory of interactive quantum instruments
Chung-Yun Hsieh, Armin Tavakoli, Huan-Yu Ku +1
Quantum instruments describe both the classical outcome and the updated quantum state in a measurement process. To do this in a non-trivial way, instruments must have the capabilit…
Reducing measurement error with adaptivity
James Byrne, Noah Linden, Paul Skrzypczyk
We show that adaptivity, also called feed-forward, is a powerful resource in reducing the error of measurement circuits that combine multiple uses of a noisy measuring device. In p…
Characterizing entanglement at finite temperature: how does a "classical" paramagnet become a quantum spin liquid?
Snigdh Sabharwal, Matthias Gohlke, Paul Skrzypczyk +1
Quantum spin liquids (QSL) are phases of matter which are distinguished not by the symmetries they break, but rather by the patterns of entanglement within them. Although these ent…
Automated quantum circuit optimization with randomized replacements
Marcin Szyniszewski, Aleks Kissinger, Noah Linden +1
Quantum circuit optimization - the process of transforming a quantum circuit into an equivalent one with reduced time and space requirements - is crucial for maximizing the utility…
Unspeakable Coherence Concentration
Benjamin Stratton, Chung-Yun Hsieh, Paul Skrzypczyk
Unspeakable coherence is a key feature separating quantum and classical physics. Modelled as asymmetry with respect to a continuous transformation generated by a physically relevan…
Activation of post-quantum steering
Ana Belén Sainz, Paul Skrzypczyk, Matty J. Hoban
There are possible physical theories that give greater violations of Bell's inequalities than the corresponding Tsirelson bound, termed post-quantum non-locality. Such theories do…