Work

Strong cubic phase shifts on the photonic vacuum state

Year: 2025

Type: article

Abstract: The Addition of photons to coherent states is shown to produce effects that display remarkable similarities with cubic phase shifts acting on the vacuum state, with fidelities in excess of 90%. The strength of the cubic interaction is found to vary inversely with the displacement of the coherent state and the strongest interactions were one order of magnitude greater than previous observations. Although these results demonstrate an interaction that is nonperturbative, the current experimental implementation relies on postselection.

Source: Physical Review A

DOI: 10.1103/yrdq-5y1x

Authors: Hao Jeng, Lorcán O. Conlon, Ping Koy Lam, Syed M. Assad

Institutions: Australian National University, Centre for Quantum Computation and Communication Technology, Agency for Science, Technology and Research, Institute of Materials Research and Engineering

Language: English

Topic: Quantum Information and Cryptography

Subfield: Artificial Intelligence

Field: Computer Science

Domain: Physical Sciences

Open Access status: green

Funder: Australian Research Council

Award: ARC Centre of Excellence for Quantum Computation and Communication Technology