Results 51 to 60 of about 824,226 (150)

Machine-Learning-Based Parameter Estimation of Gaussian Quantum States

IEEE Transactions on Quantum Engineering, 2022
In this article, we propose a machine-learning framework for parameter estimation of single-mode Gaussian quantum states. Under a Bayesian framework, our approach estimates parameters of suitable prior distributions from measured data.
Neel Kanth Kundu, Matthew R. McKay, Ranjan K. Mallik   +2 more
doaj   +1 more source

Gaussian Entanglement of Formation

, 2003
We introduce a Gaussian version of the entanglement of formation adapted to bipartite Gaussian states by considering decompositions into pure Gaussian states only.
A. Grossmann, G. Giedke, G. Giedke, H. J. Kimble, J. I. Cirac, M. Horodecki, M. M. Wolf, O. Krüger, R. A. Horn, R. F. Werner, W. Vogel   +10 more
core   +1 more source

Graphical calculus for Gaussian pure states [PDF]

, 2011
We provide a unified graphical calculus for all Gaussian pure states, including graph transformation rules for all local and semi-local Gaussian unitary operations, as well as local quadrature measurements.
D. F. Walls, D. Schlingemann, D. Schlingemann, M. Hein, Nicolas C. Menicucci, Peter van Loock, Steven T. Flammia   +6 more
core   +2 more sources

Simulating the photon statistics of multimode Gaussian states by automatic differentiation of generating functions

APL Photonics, 2023
Advances in photonics require photon-number resolved simulations of quantum optical experiments with Gaussian states. We demonstrate a simple and versatile method to simulate the photon statistics of general multimode Gaussian states.
Erik Fitzke, Florian Niederschuh, Thomas Walther   +2 more
doaj   +1 more source

Numerical evolution of squeezed and non-Gaussian states in loop quantum cosmology

, 2014
In recent years, numerical simulations with Gaussian initial states have demonstrated the existence of a quantum bounce in loop quantum cosmology in various models.
Diener, Peter, Gupt, Brajesh, Megevand, Miguel, Singh, Parampreet   +3 more
core   +1 more source

Detecting Gaussian entanglement via extractable work [PDF]

, 2017
We show how the presence of entanglement in a bipartite Gaussian state can be detected by the amount of work extracted by a continuos variable Szilard-like device, where the bipartite state serves as the working medium of the engine.
Barbieri, Marco, Brunelli, Matteo, Genoni, Marco G., Paternostro, Mauro   +3 more
core   +3 more sources

Continuous variable quantum teleportation with sculptured and noisy non-Gaussian resources

, 2008
We investigate continuous variable (CV) quantum teleportation using relevant classes of non-Gaussian states of the radiation field as entangled resources.
De Siena, S., Dell'Anno, F., Farias, L. Albano, Illuminati, F.   +3 more
core   +1 more source

A computable quantification of multi-mode Gaussian coherence and complete monogamy relation

Results in Physics
We propose a quantification CνGn of n-mode Gaussian coherence. The value of CνGn only depends on the covariance matrices and displacement vectors of continuous-variable states without any optimization procedures, and thus is easily calculated.
Kan He, Jinchuan Hou, Xiaofei Qi
doaj   +1 more source

Quantum parameter estimation using multi-mode Gaussian states

New Journal of Physics, 2015
Gaussian states are of increasing interest in the estimation of physical parameters because they are easy to prepare and manipulate in experiments. In this article, we derive formulae for the optimal estimation of parameters using two- and multi-mode ...
Dominik Šafránek, Antony R Lee, Ivette Fuentes   +2 more
doaj   +1 more source

Operational Gaussian Schmidt-Number Witnesses

, 2013
The general class of Gaussian Schmidt-number witness operators for bipartite systems is studied. It is shown that any member of this class is reducible to a convex combination of two types of Gaussian operators using local operations and classical ...
Shahandeh, Farid, Sperling, Jan, Vogel, Werner   +2 more
core   +1 more source