Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Vasconcelos, H. M."'
Publikováno v:
Physical Review A 109, 062439 (2024)
We investigate the generation of an entangled electron pair emerging from a system composed of two quantum dots attached to a superconductor Cooper pair beam splitter. We take into account three processes: Crossed Andreev Reflection, cotuneling, and
Externí odkaz:
http://arxiv.org/abs/2401.16408
Publikováno v:
Quantum Information Processing 21, 365 (2022)
We present a method to estimate the amount of squeezing and temperature of a single-mode Gaussian harmonic oscillator state based on the weighted least squares estimator applied to measured Fock state populations. Squeezing and temperature, or equiva
Externí odkaz:
http://arxiv.org/abs/2111.04923
The realism-based nonlocality (RBN) is a recently introduced measure that differs from the well-known Bell's nonlocality. For bipartite states, the RBN concerns how much an element of reality associated with a given observable is affected upon local
Externí odkaz:
http://arxiv.org/abs/2109.01053
Akademický článek
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Publikováno v:
Phys. Rev. A 98, 022325 (2018)
Quantum state tomography aims to determine the quantum state of a system from measured data and is an essential tool for quantum information science. When dealing with continuous variable quantum states of light, tomography is often done by measuring
Externí odkaz:
http://arxiv.org/abs/1805.07414
Publikováno v:
Phys. Rev. A 95, 022107 (2017)
Maximum likelihood quantum state tomography yields estimators that are consistent, provided that the likelihood model is correct, but the maximum likelihood estimators may have bias for any finite data set. The bias of an estimator is the difference
Externí odkaz:
http://arxiv.org/abs/1604.00321
Autor:
Glancy, S., Vasconcelos, H. M.
Publikováno v:
J. Opt. Soc. Am. B 25, 712-733 (2008)
We discuss several methods to produce superpositions of optical coherent states (also known as "cat states"). Cat states have remarkable properties that could allow them to be powerful tools for quantum information processing and metrology. A number
Externí odkaz:
http://arxiv.org/abs/0705.2045
Publikováno v:
Phys. Rev. A 74, 032319 (2006)
We present a method for multipartite entanglement purification of any stabilizer state shared by several parties. In our protocol each party measures the stabilizer operators of a quantum error-correcting code on his or her qubits. The parties exchan
Externí odkaz:
http://arxiv.org/abs/quant-ph/0606125
Publikováno v:
Physical Review A v. 70, 022317 (2004)
We discuss the long distance transmission of qubits encoded in optical coherent states. Through absorption these qubits suffer from two main types of errors, the reduction of the amplitude of the coherent states and accidental application of the Paul
Externí odkaz:
http://arxiv.org/abs/quant-ph/0311093
Publikováno v:
Phys. Rev. A 65, 062317 (2002)
We discuss the effects of imperfect photon detectors suffering from loss and noise on the reliability of linear optical quantum computers. We show that for a given detector efficiency, there is a maximum achievable success probability, and that incre
Externí odkaz:
http://arxiv.org/abs/quant-ph/0201047