A simple analytical expression of quantum Fisher and Skew information and their dynamics under decoherence channels

N Abouelkhir, HEL Hadfi, A Slaoui… - Physica A: Statistical …, 2023 - Elsevier
In statistical estimation theory, it has been shown previously that the Wigner–Yanase skew
information is bounded by the quantum Fisher information associated with the phase …

Continuous‐Variable Entanglement and Wigner‐Function Negativity via Adding or Subtracting Photons

XG Meng, KC Li, JS Wang, XY Zhang… - Annalen der …, 2020 - Wiley Online Library
The performance of adding or subtracting photons on two‐mode squeezed thermal states
via examining the Einstein–Podolsky–Rosen (EPR) correlation, the Hillery–Zubairy (HZ) …

Parity-detection-based Mach-Zehnder interferometry with coherent and non-Gaussian squeezed vacuum states as inputs

C Kumar, Rishabh, M Sharma, S Arora - Physical Review A, 2023 - APS
We theoretically explore the advantages rendered by non-Gaussian operations in phase
estimation using a parity-detection-based Mach-Zehnder interferometer, with one input …

Impact of photon addition and subtraction on nonclassical and phase properties of a displaced Fock state

P Malpani, K Thapliyal, N Alam, A Pathak… - Optics …, 2020 - Elsevier
Various nonclassical and quantum phase properties of photon added then subtracted
displaced Fock state have been examined systematically and rigorously. Higher-order …

Characterization of quantumness of non-Gaussian states under the influence of Gaussian channel

R Meena, S Banerjee - Quantum Information Processing, 2023 - Springer
The impact of a noisy Gaussian channel on a wide range of non-Gaussian input states is
studied in this work. The nonclassical nature of the states, both input and output, is …

Nonclassicality via the superpositions of photon addition and subtraction and quantum decoherence for thermal noise

XG Meng, JS Wang, XY Zhang, ZS Yang… - Annalen der …, 2020 - Wiley Online Library
Two new photon‐modulated states are introduced by operating a more general coherent
superposition (υ a+ ra†) m on two classical states (coherent and thermal) and their …

Generalized Photon Added and Subtracted f‐Deformed Displaced Fock States

MJ Faghihi - Annalen der Physik, 2020 - Wiley Online Library
In this paper, by making use of the nonlinear coherent states approach, the generalized
photon added and subtracted f‐deformed displaced Fock states are introduced. In other …

Enhancing non-classicality by superposing two induced states from coherent states

MAA Rahim, CHR Ooi, MAR Othman - International Journal of Theoretical …, 2022 - Springer
Non-classical states induced from coherent states (CS) α⟩ via photon addition operations
have useful non-classical properties that improve performances in quantum information …

Formal relation between Pegg-Barnett and Paul quantum phase frameworks

T Linowski, K Schlichtholz, Ł Rudnicki - Physical Review A, 2023 - APS
The problem of defining a Hermitian quantum phase operator is nearly as old as quantum
mechanics itself. Throughout the years, a number of solutions have been proposed, ranging …

Nonclassicality of f-deformed photon-added-then-subtracted SU (1, 1) and SU (2) displaced number states

MJ Faghihi - Optik, 2021 - Elsevier
In this paper, we introduce the f-deformed photon-added-then-subtracted SU (1, 1) and SU
(2) displaced number states by applying both nonlinear coherent states and group …