Multicolor teleportation of non-classical quantum states

• Grant number: 24/17009-5
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• Start date: November 01, 2024
• End date: October 31, 2026
• Field of knowledge: Physical Sciences and Mathematics - Physics - Condensed Matter Physics
• Principal Investigator: Marcelo Martinelli
• Grantee: Gabriel da Cruz Borba de Andrade
• Host Institution: Instituto de Física (IF). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Associated research grant: 22/09436-5 - Information in quantum optics, AP.TEM

Abstract

The capacity of transferring the information of a quantum state between two distinct sites without transporting the system itself defines the idea of teleportation, a resource that overcomes the limitation of reading and writing a quantum state, given by the no-cloning theorem. This process relies on the shared information of an entangled pair between two remote stations to perform the transfer protocol.We developed a technique for the transferring of quantum information of a light field between distinct ranges of the electromagnetic spectra. With this technique, we can overcome losses in transmission, using the clear bandwidth of the L-telecom band to transfer information generated by an atomic ensemble (in this case, from the D1 line of 87_Rb atoms.