Transmitting qubits through relativistic fields

• Published in: Journal of physics. A, Mathematical and theoretical Vol. 51; no. 48; pp. 485301 - 485330
• Main Authors: Jonsson, Robert H, Ried, Katja, Martín-Martínez, Eduardo, Kempf, Achim
• Format: Journal Article
• Language: English
• Published: IOP Publishing 31.10.2018
• Subjects: quantum state transfer; quantum wireless communication; relativistic quantum communication; relativistic quantum information
• ISSN: 1751-8113; 1751-8121; 1751-8121
• DOI: 10.1088/1751-8121/aae78a

Wireless communication derives its power from the simultaneous emission of signals in multiple directions. However, in the context of quantum communication, this phenomenon must be reconciled carefully with the no-cloning principle. In this context, we here study how wireless communication of quantum information can be realized via relativistic fields. To this end, we extend existing frameworks to allow for a non-perturbative description of, e.g. quantum state transfer. We consider, in particular, the case of 1+1 spacetime dimensions, which already allows for a number of interesting scenarios, pointing to, for example, new methods for tasks similar to quantum secret sharing.