Work

Energy-Tunable Sources of Entangled Photons: A Viable Concept for Solid-State-Based Quantum Relays

Year: 2015

Type: article

Abstract: We propose a new method of generating triggered entangled photon pairs with wavelength on demand. The method uses a microstructured semiconductor-piezoelectric device capable of dynamically reshaping the electronic properties of self-assembled quantum dots (QDs) via anisotropic strain engineering. Theoretical models based on k·p theory in combination with finite-element calculations show that the energy of the polarization-entangled photons emitted by QDs can be tuned in a range larger than 100 meV without affecting the degree of entanglement of the quantum source. These results pave the way towards the deterministic implementation of QD entanglement resources in all-electrically-controlled solid-state-based quantum relays.

Source: Physical Review Letters

DOI: 10.1103/physrevlett.114.150502

Authors: Rinaldo Trotta, Javier Martín-Sánchez, Istvan Daruka, Carmine Ortix, Armando Rastelli

Institutions: Johannes Kepler University of Linz, Leibniz Institute for Solid State and Materials Research

Language: English

Topic: Semiconductor Quantum Structures and Devices

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funder: Seventh Framework Programme

Award: G297885364