5 papers
Reshaping nonclassical properties and metrological performance of entangled coherent states via post-selected von Neumann measurements
Janarbek Yuanbek, Bruno Tenorio, Yusuf Turek
In quantum metrology, measurements are usually treated as passive readout processes. Here we investigate whether post-selected von Neumann measurements (PVNMs) can be used as an ac…
Kirkwood-Dirac Quasiprobability as a Universal Framework for Quantum Measurements Across All Regimes
Bo Zhang, Yusuf Turek
The question of when the Kirkwood-Dirac quasiprobability serves as the most appropriate description for quantum measurements has remained unresolved, particularly across different…
Enhancement of nonclassical properties of two-mode squeezed vacuum state with postselected von Neumann measurement
Janarbek Yuanbek, Yi-Fang Ren, Ahmad Abliz +1
We investigate the effects of weak value amplification on the nonclassical properties of two-mode squeezing vacuum state. To show the advantages of the two-mode squeezing vacuum st…
Stronger sum uncertainty relations for non-Hermitian operators
Xiao-Feng Song, Yi-Fang Ren, Shuang Liu +2
The uncertainty relations (URs) of two arbitrary Hermitian and non-Hermitian incompatible operators represented by the product of variances have been confirmed theoretically and ex…
Theoretical investigation of the relations between quantum decoherence and weak-to-strong measurement transition
Xiao-Feng Song, Shuang Liu, Xi-Hao Chen +1
This paper delves into the crucial aspects of pointer-induced quantum decoherence and the transition between von Neumann's projective strong measurement and Aharonov's weak measure…