Dear friends,

This afternoon at 3:30 in D5.01, Charles Bedard will give an impromptu seminar on gravitational teleportation. Title and abstract below.

Hope to see you there,

Will Schober

Work in progress with Maria Violaris and Simone Rijavec

Title: Does Gravitational Teleportation Fail?

Abstract: In the famous protocol, the continuous parameters specifying a qubit are transported---or teleported---using shared entanglement and only two bits of classical communication.

This raises the problem of which system, if any, actually carries the dependence on the input state.

Multiple explanations have been offered, and to date, they remain empirically indistinguishable in standard implementations. Here we show that one of them---the Deutsch--Hayden explanation, distinguished by its strictly local and causal flow of information---makes a concrete empirical prediction: teleportation must fail whenever the communication channel is fundamentally classical.