The Quantum Eraser Paradox

Journal of Advanced Physics, 2016

Optics Communications, 2000

Quantum erasure aims at large fringe visibility in sorted subensembles. Since the achieved visibility depends on the specific sorting scheme, we optimize the sorting procedure under general circumstances. The possible compromises between fringe visibility (wave-typical) and which-alternative knowledge (particle-typical) are governed by a number of inequalities that are quantitative statements about wave-particle duality. Among them is the `erasure relation', which states an absolute upper bound on the visibility that a quantum eraser can yield.

Physica Scripta, 2018

SSRN Electronic Journal

The European Physical Journal D - Atomic, Molecular and Optical Physics, 2002

Quantum superposition is the cornerstone of quantum mechanics, where interference fringes originate in the self-interference of a single photon via indistinguishable photon characteristics. Wheeler’s delayed-choice experiments have been extensively studied for the wave-particle duality over the last several decades to understand the complementarity theory of quantum mechanics. The heart of the delayed-choice quantum eraser is in the mutually exclusive quantum feature violating the cause-effect relation. Here, we experimentally demonstrate the quantum eraser using coherent photon pairs by the delayed choice of a polarizer placed out of the interferometer. Coherence solutions of the observed quantum eraser are derived from a typical Mach-Zehnder interferometer, where the violation of the cause-effect relation is due to selective measurements of basis choice.

Foundations of Physics

Optics Communications, 2000

Annals of the New York Academy of Sciences, 1995