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quant-ph2026

Phase-Driven Precision Boost in Quantum Compression for Postselected Metrology

Aiham M. Rostom, Saeed Haddadi, Vladimir A. Tomilin

We reveal the noncyclic Pancharatnam phase--arising from the coherent system-meter interaction--as a fundamental criterion that governs the optimal performance of quantum compressi…

quant-ph2025

Optical downlink modeling for low-earth-orbit and medium-earth-orbit satellites under atmospheric turbulence with a quantum-state-tomography use case

Artur Czerwinski, Jakub J. Borkowski, Saeed Haddadi +1

This paper presents a comprehensive analysis of the link budget for free-space optical systems involving Low Earth Orbit (LEO) and Medium Earth Orbit (MEO) satellites. We develop a…

quant-ph2025

Single-photon emission modeling with statistical estimators for the exponential distribution

Artur Czerwinski, Katarzyna Czerwinska, Xiangji Cai +5

Single-photon sources are used in numerous quantum technologies, from sensing and imaging to communication, making the accurate modeling of their emissions essential. In this work,…

quant-ph2025

Performance of a Superconducting Quantum Battery

Samira Elghaayda, Asad Ali, Saif Al-Kuwari +3

Finding a quantum battery model that demonstrates a quantum advantage while remaining feasible for experimental production is a considerable challenge. Here, a superconducting quan…

quant-ph2025

A comparative study of LQU and LQFI in general qubit-qutrit axially symmetric states

M. A. Yurischev, Saeed Haddadi, Mehrdad Ghominejad

We derive the compact closed forms of local quantum uncertainty (LQU) and local quantum Fisher information (LQFI) for hybrid qubit-qutrit axially symmetric (AS) states. This allows…

quant-ph2024

Optimizing QKD efficiency by addressing chromatic dispersion and time measurement uncertainty

Artur Czerwinski, Saeed Haddadi

In this paper, we present a Quantum Key Distribution (QKD) protocol that accounts for fundamental practical challenges, including chromatic dispersion, time measurement uncertainty…