site stats

Quantum information with gaussian states

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 … WebDec 10, 2024 · An algorithm for nonrelativistic quantum-mechanical finite-nuclear-mass variational calculations of nitrogen atom in L= 0, M= 0 states using all-electrons explicitly correlated Gaussian basis ...

Quantum information with Gaussian states - ScienceDirect

WebNext, we discuss the suitability of the considered tripartite entangled states to the implementation of quantum information and communication protocols with continuous … WebAug 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 ... breeders last splash tour usa https://cleanbeautyhouse.com

Applications of open quantum systems - University of São Paulo

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 … WebQuantum optical Gaussian states are a type of important robust quantum states which are manipulatable by the existing technologies. … Extending the existing results of quantum … WebWe show how to exploit a variational ansatz based on non-Gaussian wavefunctions for fast non-adiabatic preparation of quantum many-body states using quantum optimal control. We demonstrate this on the example of spin-boson model, where we determine the optimal time variation of the Hamiltonian parameters to prepare (near) critical ground states in times, … cough and lisinopril side effects

II. UNITARY EVOLUTION AND THE QUANTUM STATE MANIFOLD …

Category:Quantum entanglement beyond Gaussian criteria PNAS

Tags:Quantum information with gaussian states

Quantum information with gaussian states

Local Unitary Invariants of Quantum States SpringerLink

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 … WebTY - BOOK. T1 - Quantum Information Protocols with Gaussian States of Light. AU - Jacobsen, Christian Scheffmann. PY - 2016. Y1 - 2016. N2 - Quantum cryptography is …

Quantum information with gaussian states

Did you know?

WebAlthough many protocols, such as quantum teleportation, can be realized using only Gaussian states, non-Gaussian states are essential for harnessing the full computational … WebB. Information-theoretic quantities Let us also de ne the von Neumann entropy for a state ˆ S(ˆ) = Tr[ˆlog(ˆ)]; (8) as well as the Umegaki relative entropy D(ˆj˙) = Tr[ˆ(logˆ log˙)]; (9) …

Web2 days ago · More information: Yingxuan Chen et al, Deterministic all-optical quantum state sharing, Advanced Photonics (2024). DOI: 10.1117/1.AP.5.2.026006 Provided by SPIE 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 …

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 … WebContinuous-variable ( CV) quantum information is the area of quantum information science that makes use of physical observables, like the strength of an electromagnetic field, …

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.

http://fmt.if.usp.br/~gtlandi/14---gaussian-systems-3.pdf breeders musicWebWe address the role of the phase-insensitive trusted preparation and detection noise in the security of a continuous-variable quantum key distribution, considering the Gaussian protocols on the basis of coherent and squeezed states and studying them in the conditions of Gaussian lossy and noisy channels. The influence of such a noise on the security of … breeders movie 1986 castWebAug 1, 2007 · This work proposes and experimentally demonstrate a quantum key distribution protocol based on the transmission of gaussian-modulated coherent states … breeders mountain battles