Seminar

Qubit in Space for Science and Applications

Speaker: Paolo Villoresi (University of Padua, Padova, Italy)

Date and time
Venue
Auditorium

Abstract

 

Abstract: Quantum Communications in Space combines the most fundamental level of communications (QComms) with the largest possible scale (space links). It is the very challenging as well to attractive the possibilities offered. Padua group is active in this research subject since the early steps, in 2003, and has carried several first demonstrations since. In the talk, I will describe the role of the different degrees of freedom of light in the encoding of qubits. Different experimental results will be used to assess their feasibility. The perspective of scientific avenues for quantum communications in space will also be described. Finally, an overview of applications in the context of quantum information will be offered.

1.  Villoresi, P. et al. Experimental verification of the feasibility of a quantum channel between space and Earth. New J. Phys. 10, 033038 (2008).
2. Vallone, G. et al. Experimental Satellite Quantum Communications. Phys. Rev. Lett.
115, 040502 (2015).
3. Vallone, G. et al. Interference at the Single Photon Level Along Satellite-Ground Channels. Phys. Rev. Lett.
116, 253601 (2016).
4. Vedovato, F. et al. Extending Wheeler’s delayed-choice experiment to space. Sci. Adv. 3, e1701180 (2017).
5. Agnesi, C. et al. Sub-ns timing accuracy for satellite quantum communications. J. Opt. Soc. Am. B 36, B59 (2019).
6. Mohageg, M. et al. The deep space quantum link: prospective fundamental physics experiments using long-baseline quantum optics. EPJ Quantum Technol. 9, 25 (2022).
7. Terno, D. R. et al. Proposal for an optical interferometric measurement of the gravitational redshift with satellite systems. Phys. Rev. D
108, 084063 (2023).

                                                            

***** सभी का स्वागत है / All Are Welcome *****