4 papers
Exact and approximate conditions of tabletop reversibility: when is Petz recovery cost-free?
Minjeong Song, Hyukjoon Kwon, Valerio Scarani
Channels that describe open quantum dynamics are inherently irreversible: it is impossible to undo their effect completely, but one can study partial recovery of the…
Thermalization of finite complexity and its application to heat bath algorithmic cooling
Xueyuan Hu, Valerio Scarani
We introduce a class of thermal operations based on the collision model, where the system sequentially interacts with uncorrelated bath molecules via energy-preserving unitaries. T…
Petz recovery maps of single-qubit decoherence channels in an ion trap quantum processor
Wen-Han Png, Valerio Scarani
The Petz recovery map provides a near-optimal reversal of quantum noise, yet proposals for its implementation are only recent. We propose a physical realization of the exact state-…
All three-angle variants of Tsirelson's precession protocol, and improved bounds for wedge integrals of Wigner functions
Lin Htoo Zaw, Valerio Scarani
Tsirelson's precession protocol is a nonclassicality witness that can be defined for both discrete and continuous variable systems. Its original version involves measuring a preces…