379 citations · 986 across the 12 of their papers we have counts for
12 papers · 1 filter
Experimental assessment of physical realism in a quantum-controlled device
Pedro R. Dieguez, Jéferson R. Guimarães, John P. S. Peterson +2
Bohr's complementarity principle has been challenged by quantum delayed-choice experiments wherein quantum systems are claimed to behave neither as wave nor as a particle, but in a…
Experimental Validation of Fully Quantum Fluctuation Theorems Using Dynamic Bayesian Networks
Kaonan Micadei, John P. S. Peterson, Alexandre M. Souza +5
Fluctuation theorems are fundamental extensions of the second law of thermodynamics for small systems. Their general validity arbitrarily far from equilibrium makes them invaluable…
Easy access to energy fluctuations in non-equilibrium quantum many-body systems
Marcela Herrera, John P. S. Peterson, Roberto M. Serra +1
We combine theoretical and experimental efforts to propose a method for studying energy fluctuations, in particular, to obtain the related bi-stochastic matrix of transition probab…
Implementation of a Quantum Engine Fuelled by Information
John P. S. Peterson, Roberto S. Sarthour, Raymond Laflamme
Here, we show the implementation of a complete cycle of a quantum engine fuelled by information. This engine is a quantum version of the Szilard engine, where information is used t…
Fast Simulation of Magnetic Field Gradients for Optimization of Pulse Sequences
John P. S. Peterson, Hemant Katiyar, Raymond Laflamme
We study how to simulate, efficiently, pulse field gradients (PFG) used in nuclear magnetic resonance (NMR). An efficient simulation requires discretization in time and space. We s…
Enhancing quantum control by improving shape pulse generation
John P. S. Peterson, Roberto S. Sarthour, Raymond Laflamme
Most quantum processors requires pulse sequences for controlling quantum states. Here, we present an alternative algorithm for computing an optimal pulse sequence in order to perfo…
Experimental characterization of a spin quantum heat engine
John P. S. Peterson, Tiago B. Batalhão, Marcela Herrera +4
Developments in the thermodynamics of small quantum systems envisage non-classical thermal machines. In this scenario, energy fluctuations play a relevant role in the description o…
Reversing the direction of heat flow using quantum correlations
Kaonan Micadei, John P. S. Peterson, Alexandre M. Souza +6
Heat spontaneously flows from hot to cold in standard thermodynamics. However, the latter theory presupposes the absence of initial correlations between interacting systems. We her…
Reliability of digitized quantum annealing and the decay of entanglement
John P. S. Peterson, Roberto S. Sarthour, Alexandre M. Souza +3
We performed a banged-digital-analog simulation of a quantum annealing protocol in a two-qubit Nuclear Magnetic Resonance (NMR) quantum computer. Our experimental simulation employ…
Experimental rectification of entropy production by a Maxwell's Demon in a quantum system
P. A. Camati, J. P. S. Peterson, T. B. Batalhão +5
Maxwell's demon explores the role of information in physical processes. Employing information about microscopic degrees of freedom, this "intelligent observer" is capable of compen…
High Resolution non-Markovianity in NMR
Nadja K. Bernardes, John P. S. Peterson, Roberto S. Sarthour +5
Memoryless time evolutions are ubiquitous in nature but often correspond to a resolution-induced approximation, i.e. there are correlations in time whose effects are undetectable.…
Experimental demonstration of information to energy conversion in a quantum system at the Landauer Limit
John P. P. Silva, Roberto S. Sarthour, Alexandre M. Souza +5
Landauer's principle sets fundamental thermodynamical constraints for classical and quantum information processing, thus affecting not only various branches of physics, but also of…