Quantum Cryptography Using Past-Future Entanglement

Abstract

Quantum Entanglement is an important principle on which Quantum Key Distribution is based. However, observations of measurements are discussed over a classical channel. Communication using entangled states is facilitated by Quantum Teleportation and has been the basis for various protocols. The purpose of this paper is to study the past protocols and present a security perspective on a novel quantum protocol which modifies the process of Quantum Teleportation. This paper explores the methodology of Quantum Teleportation and applies the concept to modern cryptographic applications.