scholarly journals Characterization of a Two-Photon Quantum Battery: Initial Conditions, Stability and Work Extraction

Entropy ◽  
2021 ◽  
Vol 23 (5) ◽  
pp. 612
Author(s):  
Anna Delmonte ◽  
Alba Crescente ◽  
Matteo Carrega ◽  
Dario Ferraro ◽  
Maura Sassetti
Keyword(s):  
Coherent State ◽  
Initial Conditions ◽  
Stored Energy ◽  
Level System ◽  
Figures Of Merit ◽  
Two Photon ◽  
Cavity Radiation ◽  
Fock State ◽  
Energy Average

We consider a quantum battery that is based on a two-level system coupled with a cavity radiation by means of a two-photon interaction. Various figures of merit, such as stored energy, average charging power, energy fluctuations, and extractable work are investigated, considering, as possible initial conditions for the cavity, a Fock state, a coherent state, and a squeezed state. We show that the first state leads to better performances for the battery. However, a coherent state with the same average number of photons, even if it is affected by stronger fluctuations in the stored energy, results in quite interesting performance, in particular since it allows for almost completely extracting the stored energy as usable work at short enough times.

scholarly journals Spectral characterization of weak coherent state sources based on two-photon interference

2015 ◽  
Vol 32 (4) ◽  
pp. 545 ◽  
Author(s):  
Thiago Ferreira da Silva ◽  
Gustavo C. do Amaral ◽  
Douglas Vitoreti ◽  
Guilherme P. Temporão ◽  
Jean Pierre von der Weid
Keyword(s):  
Coherent State ◽  
Spectral Characterization ◽  
Two Photon

scholarly journals Characterization of Scattering Effects in Phantom Samples using Single and Two-Photon Excitation Light Sheet Microscopy

2012 ◽  
Vol 102 (3) ◽  
pp. 195a-196a
Author(s):  
Zeno Lavagnino ◽  
Francesca Cella Zanacchi ◽  
Emiliano Ronzitti ◽  
Ivan Coto Hernandez ◽  
Alberto Diaspro
Keyword(s):  
Light Sheet ◽  
Excitation Light ◽  
Two Photon ◽  
Light Sheet Microscopy ◽  
Photon Excitation ◽  
Scattering Effects ◽  
Two Photon Excitation

scholarly journals High-resolution spectral characterization of two photon states via classical measurements

2014 ◽  
Vol 8 (5) ◽  
pp. L76-L80 ◽  
Author(s):  
Andreas Eckstein ◽  
Guillaume Boucher ◽  
Aristide Lemaître ◽  
Pascal Filloux ◽  
Ivan Favero ◽  
...  
Keyword(s):  
High Resolution ◽  
Spectral Characterization ◽  
Two Photon ◽  
Photon States

Two-Photon Absorption Properties of Multipolar Triarylamino/ Tosylamido 1,1,4,4-Tetracyanobutadienes

2021 ◽  
Author(s):  
Nicolas Ripoche ◽  
Marie Betou ◽  
Clotilde Philippe ◽  
Yann Trolez ◽  
Olivier Mongin ◽  
...  
Keyword(s):  
Photon Absorption ◽  
Synthesis And Characterization ◽  
Absorption Properties ◽  
Two Photon Absorption ◽  
Two Photon

The synthesis and characterization of four new tetracyanobutadiene (TCBD) derivatives (1, 3c and 4b-c) incorporating tosylamido and 4-triphenylamino moieties are reported. Along with those of five closely related or differently...

Computational Characterization of Passive Fluid Mixing in Microfluidics

Volume 3 ◽  
2004 ◽  
Author(s):  
Erik D. Svensson
Keyword(s):  
Stokes Equations ◽  
Initial Conditions ◽  
Three Dimensional ◽  
Fluid Mixing ◽  
Navier Stokes ◽  
Navier Stokes Equations ◽  
Fluid Systems ◽  
Sensitive Dependence ◽  
Microfluidic Mixers

In this work we computationally characterize fluid mixing in a number of passive microfluidic mixers. Generally, in order to systematically study and characterize mixing in realistic fluid systems we (1) compute the fluid flow in the systems by solving the stationary three-dimensional Navier-Stokes equations or Stokes equations with a finite element method, and (2) compute various measures indicating the degree of mixing based on concepts from dynamical systems theory, i.e., the sensitive dependence on initial conditions and mixing variance.

Automatic Counting of Intra-Cellular Ribonucleo-Protein Aggregates in Saccharomyces cerevisiae Using a Textural Approach

2019 ◽  
Vol 25 (1) ◽  
pp. 164-179
Author(s):  
Ambroise Marin ◽  
Emmanuel Denimal ◽  
Lucie Bertheau ◽  
Stéphane Guyot ◽  
Ludovic Journaux ◽  
...  
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Fluorescent Protein ◽  
Protein Aggregates ◽  
Point Of View ◽  
Zernike Moment ◽  
Two Photon ◽  
Haralick Features ◽  
Green Fluorescent ◽  
Two Photon Fluorescence

AbstractIn the context of microbiology, recent studies show the importance of ribonucleo-protein aggregates (RNPs) for the understanding of mechanisms involved in cell responses to specific environmental conditions. The assembly and disassembly of aggregates is a dynamic process, the characterization of the stage of their evolution can be performed by the evaluation of their number. The aim of this study is to propose a method to automatically determine the count of RNPs. We show that the determination of a precise count is an issue by itself and hence, we propose three textural approaches: a classical point of view using Haralick features, a frequency point of view with generalized Fourier descriptors, and a structural point of view with Zernike moment descriptors (ZMD). These parameters are then used as inputs for a supervised classification in order to determine the most relevant. An experiment using a specific Saccharomyces cerevisiae strain presenting a fusion between a protein found in RNPs (PAB1) and the green fluorescent protein was performed to benchmark this approach. The fluorescence was observed with two-photon fluorescence microscopy. Results show that the textural approach, by mixing ZMD with Haralick features, allows for the characterization of the number of RNPs.

scholarly journals Entanglement and geometric phase of the coherent field interacting with a three two-level atoms in the presence of non-linear terms

2020 ◽  
Vol 24 (Suppl. 1) ◽  
pp. 237-245
Author(s):  
Eman Hilal ◽  
Sadah Alkhateeb ◽  
Sayed Abel-Khalek ◽  
Eied Khalil ◽  
Amjaad Almowalled
Keyword(s):  
Coherent State ◽  
Geometric Phase ◽  
Initial Conditions ◽  
Von Neumann Entropy ◽  
Field Mode ◽  
Von Neumann ◽  
Coherent Field ◽  
Non Linear ◽  
Atomic States ◽  
The Impact

We study the interaction of a three two-level atoms with a one-mode optical coherent field in coherent state in the presence of non-linear Kerr medim. The three atoms are initially prepared in upper and entangled states while the field mode is in a coherent state. The constants of motion, three two-level atoms and field density matrix are obtained. The analytic results are employed to perform some investigations of the temporal evolution of the von Neumann entropy as measure of the degree of entanglement between the three two-level atoms and optical coherent field. The effect of the detuning and the initial atomic states on the evolution of geometric phase and entanglement is analyzed. Also, we demonstrate the link between the geometric phase and non-classical properties during the evolution time. Additionally the effect of detuning and initial conditions on the Mandel parameter is studied. The obtained results are emphasize the impact of the detuning and the initial atomic states of the feature of the entanglement, geometric phase and photon statistics of the optical coherent field.

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