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Quantum information with gaussian states

Web17 hours ago · Today, on 14 April, we celebrate World Quantum Day – an international initiative launched by scientists from more than 65 countries to promote public understanding of quantum science and technology worldwide. The date – “4.14” -- marks the rounded first 3 digits of Planck’s constant, a crucial value in quantum mechanics that is … WebIn this article, we derive a closed form expression for the symmetric logarithmic derivative of Fermionic Gaussian states. This provides a direct way of computing the quantum Fisher Information for Fermionic Gaussian states. Applications range from quantum Metrology with thermal states to non-equilibrium steady states with Fermionic many-body systems.

Quantum optics in the phase space - ResearchGate

WebDec 16, 2024 · A. Monras and F. Illuminati, Information geometry of Gaussian channels, Phys. Rev. A 81 (2010) 062326. A. Monras, Phase space formalism for quantum estimation of Gaussian states, arXiv:1303.3682. S. Adler, Taylor expansion and derivative formulas for matrix logarithms. WebApr 12, 2024 · Download PDF Abstract: We discuss the interconnections between basic correlation measures of a bipartite quantum state and basic information characteristics of a quantum channel, focusing on the benefits of these interconnections for solving specific problems concerning the characteristics of both types. We describe the basic properties … peoplelink speaker track pro camera https://marlyncompany.com

Applications of open quantum systems - University of São Paulo

Webthe quantum phase space of continuous variable systems. In that context, a quantum state is calledGaussianif its Husimi-Q function is a Gaussian function of the coherent state … WebApr 12, 2024 · Multipartite entangled states are significant resources for both quantum information processing and quantum metrology. In particular, non-Gaussian entangled … WebA. S. Holevo, Some statistical problems for quantum Gaussian states, IEEE Transactions on Information Theory, IT-21:533 (1975). CrossRef MathSciNet Google Scholar A. S. Holevo, … peoplelink staffing application online

Gaussian quantum discord and the monogamy relation in de

Category:Quantum non-Gaussianity and secure quantum communication

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Quantum information with gaussian states

Sending Quantum Information with Gaussian States

WebOct 19, 2011 · We propose a measure of non-Gaussianity for quantum states of a system of n oscillator modes. Our measure is based on the quasi-probability … WebApr 14, 2024 · In this paper, we investigate the electronic and optical properties of an electron in both symmetric and asymmetric double quantum wells that consist of a harmonic potential with an internal Gaussian barrier under a nonresonant intense laser field. The electronic structure was obtained by using the two-dimensional diagonalization …

Quantum information with gaussian states

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WebMar 14, 2024 · The first issue concerns the role of quantum entanglement in improving the accuracy of a metrological protocol in the two-mode Gaussian systems. In this context, we believe that the concept of quantum Fisher information can be employed, as a measure, to quantify the degree of quantum correlations in multi-modes Gaussian states. WebSpin squeezing is a quantum process that decreases the variance of one of the angular momentum components in an ensemble of particles with a spin. The quantum states …

WebApr 30, 2024 · QuGIT: Quantum Gaussian Information Toolbox. QuGIT is an open-sourced object-oriented Python library aimed at simulating multimode quantum gaussian states, … WebJan 1, 2005 · The information-theoretic aspects of bosonic Gaussian states have been thoroughly investigated; see Refs. [84] [85][86] for comprehensive reviews. In particular, …

WebOct 6, 2024 · Abstract. We study bosonic quantum computations using the Segal-Bargmann representation of quantum states. We argue that this holomorphic representation is a … http://fmt.if.usp.br/~gtlandi/14---gaussian-systems-3.pdf

WebOct 14, 2024 · Assume having a one-mode quantum Gaussian state with quadrature observable vector $\hat r = [\hat q , \hat p ] $ and covariance matrix $\sigma$. According …

WebJan 26, 2024 · Since (1) is a linear functional of the quantum state of light, the maximum F max is reached for a pure Gaussian state. 15,31 However, each mode is still parametrized … peoplelink staffing applicationWebThis works in a regime of non-Gaussian states of the two masses, and can evidence the quantum nature of macroscopic forces. As a separate application, we apply the same technique to witness the quantum nature of gravity via a table-top experiment. peoplelink staffing allentown paWebSi-Hui has broad experience of quantum information science, having been an active researcher in the field for 15 years. She received a BSc in … peoplelink staffing alabamaWebAug 1, 2007 · This work proposes and experimentally demonstrate a quantum key distribution protocol based on the transmission of gaussian-modulated coherent states … toftwood junior school staffWebAug 20, 2024 · 4 Gaussian quantum discord and classical correlation in de Sitter space. We initially consider an entangled Gaussian two-mode squeezed state of the free scalar field shared by Alice and Bob in de Sitter space. In this paper, we assume that Alice is a global observer who stays in the Bunch–Davies vacuum, while Bob is an observer who resides in ... toft woods for saleWebSep 7, 2024 · Two "natural" approaches are (1) the direct calculation decomposing the operators as a sum of creations and annihilation operators, and (2) passing through the … toftwood junior school websiteWebQuantum optical Gaussian states are a type of important robust quantum states which are manipulatable by the existing technologies. … Extending the existing results of quantum … peoplelink staffing assessment tests