Fringe visibility and correlation in Mach–Zehnder interferometer with an asymmetric beam splitter

Abstract

We study the wave-particle duality in a general Mach-Zehnder interferometer with an asymmetric beam splitter from the viewpoint of quantum information theory. The correlations(including the classical correlation and the quantum correlation) between the particle and the which-path detector are derived when they are in pure state or mixed state at the output of Mach-Zehnder interferometer. It is found that the fringe visibility and the correlations are effected by the asymmetric beam splitter and the input state of the particle. The complementary relations between the fringe visibility and the correlations are also presented.

Enhancing measurement precision through noise analysis and fringe optimization in white light interferometry

“…The probe consists primarily of two components: the probe casing and optical elements, as depicted in figure 6(c). The probe casing comprises a base (7) and a probe sleeve (8). Within the probe, the optical components include a single-mode fiber optic jumper (1), a focusing collimator (2), a washer (3), a snap ring (4), a window (5), and an off-axis parabolic reflector (6).…”

“…In this paper, the focus is on utilizing the concept of Quality Factor to evaluate and optimize interference signals in a more practical manner. Several studies have explored evaluation methods for Quality Factors [7,8]. However, the current stage of interference fringe optimization lacks theoretical analysis and an appropriate evaluation standard.…”