Experimental Demonstration of Quantum Low Probability of Intercept for Ultra-Secure Communication

Secure communication systems utilize encryption with shared keys between the sender and receiver of the encrypted message. For added security, the encrypted message can be hidden within a significant amount of noise so that the eavesdropper could not even extract the actual encrypted message, let alone decrypt it. However, such a system, called low probability of intercept (LPI), also uses a shared key which is susceptible to security failure caused by key disclosure, just like encryption systems. A quantum version of LPI, or QLPI, operates entirely differently: the key for quantum low probability of intercept (QLPI) is transient and not shared, and its security is based on the quantum no-cloning theorem. In this work, we will present a tabletop proof-of-concept experiment to demonstrate QLPI, achieving errorfree secure communication at an internet-compatible rate of 0.5 Gbps over the equivalent of 50 km of telecom fibers.

Name thesis:degree_name

Doctoral

Department dc:contributor.department

Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science

Grantor dc:publisher

Massachusetts Institute of Technology

Year dc:date.issued

2023

Author dc:creator

• Heyes, Jane E.

Advisor dc:contributor.advisor

• Wong, Franco N.C.

Statement dc:rights

• In Copyright - Educational Use Permitted
• Copyright retained by author(s)

Licence dc:rights.uri

• https://rightsstatements.org/page/InC-EDU/1.0/

Handle dc:identifier.uri

https://hdl.handle.net/1721.1/152789

OAI identifier oai:identifier

oai:dspace.mit.edu:1721.1/152789