Work

Controllable Gaussian-Qubit Interface for Extremal Quantum State Engineering

Year: 2010

Type: article

Abstract: We study state engineering through bilinear interactions between two remote qubits and two-mode gaussian light fields. The attainable two-qubit states span the entire physically allowed region in the entanglement-versus-global-purity plane. Two-mode gaussian states with maximal entanglement at fixed global and marginal entropies produce maximally entangled two-qubit states in the corresponding entropic diagram. We show that a small set of parameters characterizing extremally entangled two-mode gaussian states is sufficient to control the engineering of extremally entangled two-qubit states, which can be realized in realistic matter-light scenarios.

Source: Physical Review Letters

DOI: 10.1103/physrevlett.104.240501

Authors: Gerardo Adesso, Steve Campbell, Fabrizio Illuminati, Mauro Paternostro

Institutions: University of Nottingham, Queen's University Belfast, University of Salerno, Istituto Nazionale di Fisica Nucleare, Istituto Nazionale di Fisica Nucleare, Gruppo Collegato di Salerno

Language: English

Topic: Quantum Information and Cryptography

Subfield: Artificial Intelligence

Field: Computer Science

Domain: Physical Sciences

Open Access status: green

Funder: Engineering and Physical Sciences Research Council

Awards: Investigating quantumness in complex systems under adverse conditions, G6741728596