1) The document describes the RetroComm experiment which aims to use quantum randomness to send a message back in time. It uses an agent attempting to influence the output of a quantum random number generator (QRNG) that is delayed, in order to encode and send a message to the past. 

2) The experiment utilizes a QRNG that generates random bits by detecting photons passing through or being reflected by a beam splitter. Large blocks of these random bits would be used to encode each bit of the intended message through techniques like majority voting. 

3) If the agent is able to cause even small deviations from randomness in the delayed bit stream, various encoding schemes could help amplify this effect to reliably decode the sent

Richard Shoup and Thomas Etter - The RetroComm Experiment - Using Quantum Randomness To Send A Message Back in Time PDF

The list of books you might like