464 citations · 619 across the 13 of their papers we have counts for
5 papers · 1 filter
A simple derivation of the Lindblad equation
Carlos Alexandre Brasil, Felipe Fernandes Fanchini, Reginaldo de Jesus Napolitano
We present a derivation of the Lindblad equation - an important tool for the treatment of non-unitary evolutions - that is accessible to undergraduate students in physics or mathem…
How much time does a measurement take?
Carlos Alexandre Brasil, Leonardo Andreta de Castro, Reginaldo de Jesus Napolitano
We consider the problem of measurement using the Lindblad equation, which allows the introduction of time in the interaction between the measured system and the measurement apparat…
Quantum state tomography and quantum logical operations in a three qubits NMR quadrupolar system
A. G. Araujo-Ferreira, Carlos Alexandre Brasil, D. O. Soares-Pinto +3
In this work, we present an implementation of quantum logic gates and algorithms in a three effective qubits system, represented by a (I = 7/2) NMR quadrupolar nuclei. To implement…
Protecting a quantum state from environmental noise by an incompatible finite-time measurement
Carlos Alexandre Brasil, Leonardo Andreta de Castro, Reginaldo de Jesus Napolitano
We show that measurements of finite duration performed on an open two-state system can protect the initial state from a phase-noisy environment, provided the measured observable do…
The master equation for the reduced open-system dynamics, including a Lindbladian description of finite-duration measurement
Carlos Alexandre Brasil, Reginaldo de Jesus Napolitano
We consider the problem of the measurement of a system occurring during a finite time interval, while environmentally-induced noise decreases the system-state coherence. We assume…