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Using teleportation to convert quantum states of the field into the telecom C-band

Grant number: 17/27096-9
Support type:Scholarships in Brazil - Master
Effective date (Start): April 01, 2018
Effective date (End): August 31, 2020
Field of knowledge:Physical Sciences and Mathematics - Physics - Condensed Matter Physics
Cooperation agreement: Coordination of Improvement of Higher Education Personnel (CAPES)
Principal researcher:Marcelo Martinelli
Grantee:Luiz Couto Corrêa Pinto Filho
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
Associated scholarship(s):19/13608-3 - Experimental implementation of an atomic spin as a negative mass reference frame to overcome the standard quantum limit in gravitational-wave detectors, BE.EP.MS


Quantum teleportation plays a key role in transmission and processing of quantum information. It can be used to enable the interaction of quantum systems operating at different wavelengths, with the help of entanglement and a classical communication channel. In this spirit, we propose the generation of a tripartite entangled state with different colors using an optical parametric oscillator. We will teleport the state generated in the pump field, at 780 nm (compatible with the D2 line of Rubidium atoms) to the downconverted fields at 1560 nm (compatible with the telecom C-band), creating structures for quantum information processing over these wavelengths. (AU)

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