Dissipative Engineering of Gaussian Entangled States in Harmonic Lattices with a Single-Site Squeezed Reservoir

Year: 2021

Authors: Zippilli S., Vitali D.

Autors Affiliation: School of Science and Technology, Physics Division, University of Camerino, Camerino (MC), I-62032, Italy; INFN, Sezione di Perugia, Perugia, I-06123, Italy; CNR-INO, L.go Enrico Fermi 6, Firenze, I-50125, Italy

Abstract: We study the dissipative preparation of many-body entangled Gaussian states in bosonic lattice models which could be relevant for quantum technology applications. We assume minimal resources, represented by systems described by particle-conserving quadratic Hamiltonians, with a single localized squeezed reservoir. We show that in this way it is possible to prepare, in the steady state, the wide class of pure states which can be generated by applying a generic passive Gaussian transformation on a set of equally squeezed modes. This includes nontrivial multipartite entangled states such as cluster states suitable for measurement-based quantum computation.


Volume: 126 (2)      Pages from: 020402-1  to: 020402-6

More Information: We acknowledge the support of the European Union Horizon 2020 Programme for Research and Innovation through the Project No. 732894 (FET Proactive HOT), and the Project No. 862644 (FET Open QUARTET).
KeyWords: quantum; generation; driven
DOI: 10.1103/PhysRevLett.126.020402