Separating the wave and particle attributes of two entangled photons

TL;DR

This paper proposes a feasible method to spatially separate wave and particle attributes of two entangled photons using pre- and post-selection, adhering to Bohr's complementarity principle.

Contribution

It introduces a novel scheme to distinguish wave and particle properties of entangled photons, expanding understanding of quantum duality.

Findings

Successfully separates wave and particle attributes in entangled photons

Ensures compliance with Bohr's complementarity principle

Provides a practical approach for quantum property manipulation

Abstract

Wave-particle duality is one of the most intriguing counterfactual concepts in quantum theory. In our common sense, the wave and particle properties of a quantum object are inseparable. However, the recent studies based on Quantum Cheshire Cat phenomena showed that separating the physical properties of a quantum object including wave and particle attributes from itself are possible in microscopic system described by two-state vector formalism. In this study, we put forward a feasible scheme to spatially separate the wave and particle attributes of two entangled photons by properly choosing the pre- and post-selection of path states. Our scheme also guarantees that the observation of wave and particle properties of the two entangled photons always obey the Bohr's complementarity principle.