Teleportation of non-classical states of light

• Grant number: 20/09923-8
• Support type: Scholarships in Brazil - Post-Doctorate
• Effective date (Start): August 01, 2020
• Effective date (End): January 31, 2022
• Field of knowledge: Physical Sciences and Mathematics - Physics - Condensed Matter Physics
• Principal researcher: Marcelo Martinelli
• Grantee: Wilder Rodrigues Cardoso
• Home Institution: Instituto de Física (IF). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Associated research grant: 15/18834-0 - Exploring quantum information with atoms, crystals and chips, AP.TEM

Abstract

With the recent achievement of classical state teleportation between fields of distinct colors, we aim at the next step, involving the transfer of quantum states between an atomic system and another system at the telecom L-band.We should use an Optical Parametric Oscillator built with a PPKTP crystal, pumped by a 532 nm laser. It will produce an entangled pair in 795 and 1608 nm. In order to demonstrate the capacity of teleporting a non-classical state, we will use a squeezed state produced by polarizing self-rotation in an atomic media. We should also swap the entanglement of an entangled pair produced by four wave mixing, making the transfer of entanglement to a wavelength that is compatible with silicon chips. (AU)