Researchers at NIST and the Joint Quantum Institute have developed a new method for creating entangled photon pairs using twisted optical fiber loops. The setup creates pairs of photons with indistinguishable paths, leading to their polarization states being in superposition until measured. This allows testing of fundamental quantum concepts like nonlocal hidden variables (NLHV) theories.
The experiment rules out certain NLHV theories while supporting quantum mechanics predictions. The results align with other similar experiments, providing new insights into quantum mechanics foundations and the nature of reality.
Source: https://www.nist.gov/news-events/news/2008/03/loopy-photons-clarify-spookiness-quantum-physics
Keywords: Entanglement, Quantum Physics, Photons, Polarization, Realism
