Effective Quantum Time Travel

TL;DR

This paper explores how quantum teleportation can simulate time travel, enabling encrypted future measurements and multistage processing, while resolving paradoxes through probabilistic methods.

Contribution

It introduces a method to simulate quantum time travel using teleportation, addressing conceptual issues and enabling new quantum information protocols.

Findings

Probabilistic quantum teleportation can simulate backward-in-time connections.

Encrypted measurements of future states become feasible with delayed decryption.

Multistage quantum processing can occur within a single time frame.

Abstract

The quantum teleportation protocol can be used to probabilistically simulate a quantum circuit with backward-in-time connections. This allows us to analyze some conceptual problems of time travel in the context of physically realizable situations, to realize encrypted measurements of future states for which the decryption key becomes available only after the state is created, and to probabilistically realize a multistage quantum state processing within the time needed to complete only one stage. The probabilistic nature of the process resolves any paradox.