Work

Full two-photon down-conversion of a single photon

Year: 2016

Type: article

Abstract: We demonstrate, both numerically and analytically, that it is possible to deterministically generate two photons from one and only one photon. We characterize the output two-photon field and make our calculations close to reality by including losses. Our proposal relies on real or artificial three-level atoms with a cyclic transition strongly coupled to a one-dimensional waveguide. We show that almost perfect down-conversion, with efficiency over $99%$, is reachable using state-of-the-art waveguide QED architectures such as photonic crystals or superconducting circuits. In particular, we sketch an implementation in circuit QED, where the three-level atom is a transmon.

Source: Physical Review A

DOI: 10.1103/physreva.94.053814

Authors: E. Sánchez-Burillo, L. Martín-Moreno, J. J. García-Ripoll, D. Zueco

Institutions: Universidad de Zaragoza, Consejo Superior de Investigaciones Científicas, Instituto de Física Fundamental, Fundacion Agencia Aragonesa para la Investigacion y el Desarrollo

Language: English

Topic: Quantum Information and Cryptography

Subfield: Artificial Intelligence

Field: Computer Science

Domain: Physical Sciences

Open Access status: green

Funder: Ministerio de Economía y Competitividad

Awards: G2808186056, G4129022918, G573281348