Entanglement Telegraphed Communication Avoiding Light-speed Limitation by Hong Ou Mandel Effect

TL;DR

This paper proposes a method combining EPR entanglement and the Hong-Ou-Mandel effect to enable faster-than-light communication by extracting additional quantum information, but it is ultimately refuted.

Contribution

It introduces a novel approach using biphotons and the HOM effect to potentially achieve FTL communication, challenging conventional quantum limits.

Findings

Proposes a method for FTL communication using entanglement and HOM effect.

Demonstrates how polarization information can be extracted beyond standard limits.

Refutes the FTL claim with a counterargument from Vaidman.

Abstract

Faster-than-light communication is possible via quantum entanglement in an EPR experiment if one can overcome nature's "quantum modesty" and gain knowledge concerning the quantum state of a single photon. Using a special EPR source that produces precisely timed doublets of EPR photons (biphotons), I show how one can gain additional information about the photon's polarization state--information not accessible using the conventional one-photon-at-a-time EPR setup. Using the Hong-Ou-Mandel effect that describes how two identical photons combine at a neutral beamsplitter (NBS), I show how Bob can obtain enough polarization information about his B photons to unambiguously ascertain the polarization basis of Alice's distant measurement device which she has deployed to measure her A photons. I am proposing, in short, that EPR + HOM = FTL. Version 2 concludes with a refutation of its FTL claim due to Lev Vaidman.