Communication in the presence of indefinite causal structure

A telephone call consists of two communicating channels: Person A talking to Person B, and Person B talking to Person A. The two channels need to function in turn for the two to understand each other, and it usually results in confusion when they talk simultaneously. In this latter case, we say that there is a mixture in the communicating directions. Because the communicating directions indicate directions of causal influence, the mixture can be regarded in a more general context as an indefinite causal structure. Indefinite causal structure can arise generically due to the lack of knowledge (e.g., the people on the telephone give wrong estimations about when the other person would talk) or due to quantum effects. Recently, the tools to incorporate indefinite causal structure into communication theory became available. In the project, we study communication in the presence of indefinite causal structure. TO BE CONT’D

Faculty Supervisor:

Lucien Hardy;Achim Kempf

Student:

Partner:

The University of Queensland

Discipline:

Physics

Sector:

Education

University:

University of Waterloo

Program: