Zobrazeno 1 - 10
of 20
pro vyhledávání: '"de Castro, Leonardo Andreta"'
Publikováno v:
Quantum 4, 295 (2020)
Measurement-based quantum computing (MBQC) is a promising alternative to traditional circuit-based quantum computing predicated on the construction and measurement of cluster states. Recent work has demonstrated that MBQC provides a more general fram
Externí odkaz:
http://arxiv.org/abs/1909.11817
Publikováno v:
Acta Physica Slovaca 69, No.1, 1-74 (2019)
We provide an introduction to the theory of quantum measurements that is centered on the pivotal role played by John von Neumann's model. This introduction is accessible to students and researchers from outside the field of foundations of quantum mec
Externí odkaz:
http://arxiv.org/abs/1908.03949
Publikováno v:
npj Quantum Information 6, 19 (2020)
Accurate control of quantum systems requires precise measurement of the parameters that govern the dynamics, including control fields and interactions with the environment. Parameters will drift in time and experiments interleave protocols that perfo
Externí odkaz:
http://arxiv.org/abs/1907.03864
Weak measurements have an increasing number of applications in contemporary quantum mechanics. They were originally described as a weak interaction that slightly entangled the translational degrees of freedom of a particle to its spin, yielding surpr
Externí odkaz:
http://arxiv.org/abs/1803.07110
The energy levels of hydrogen-like atoms are obtained from the phase-space quantization, one of the pillars of the old quantum theory, by three different methods - (i) direct integration, (ii) Sommerfeld's original method, and (iii) complex integrati
Externí odkaz:
http://arxiv.org/abs/1605.08027
Publikováno v:
Eur. J. Phys. 36 (2015) 065024
In quantum mechanics, pointer states are eigenstates of the observable of the measurement apparatus that represent the possible positions of the display pointer of the equipment. The origin of this concept lies in attempts to fill the blanks in the E
Externí odkaz:
http://arxiv.org/abs/1508.04101
Publikováno v:
Eur. Phys. J. Plus (2014) 129: 206
Contrary to conventional quantum mechanics, which treats measurement as instantaneous, here we explore a model for finite-time measurement. The main two-level system interacts with the measurement apparatus in a Markovian way described by the Lindbla
Externí odkaz:
http://arxiv.org/abs/1309.3621
We propose a method for applying the quantum error-correction method for errors that occur during quantum gates. Using a perturbation treatment of the noise that allows us to separate it from the ideal evolution of the quantum gate, we demonstrate th
Externí odkaz:
http://arxiv.org/abs/1109.4796
Publikováno v:
Foundations of Physics (2013)
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 apparatus. We use analytic results, valid for weak system-environment couplin
Externí odkaz:
http://arxiv.org/abs/1109.4613
Publikováno v:
Phys. Rev. A 84, 022112 (2011)
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 does not commute with the perturbing interaction. When the measured obse
Externí odkaz:
http://arxiv.org/abs/1106.4537