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Conference on Lasers and Electro-Optics

Towards an Implementation of Superdense Teleportation in Space

Joseph C. Chapman, Trent Graham, Francesco Marsili, Matthew D. Shaw, Christopher K. Zeitler, Paul G. Kwiat

Published Jan 1, 2017• 1 citation
Publisher

Abstract

In our effort to implement superdense teleportation (SDT) from space to earth, we have incorporated Doppler compensation methods and we installed 4 superconducting nanowire detectors so our system can operate efficiently with high loss, showing that we retain the ability to efficiently perform SDT.
DOI
10.1364/cleo_qels.2017.ftu4f.3

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Quantum communication networks based on fiber optics are restricted in length since efficient quantum repeaters are not yet available. A free-space channel between a satellite in orbit and Earth can circumvent this problem. We have constructed a system to demonstrate the feasibility of quantum communication between space and earth using photons hyperentangled in their polarization and time-bin degrees of freedom. With this system, we have implemented superdense teleportation (SDT) with a fidelity of 0.94±0.02. To increase the efficiency of SDT, we have developed an active, polarization-independent switch compatible with SDT. We characterized the performance of its switching efficiency. Finally, we have constructed a novel two-level interferometer for time-bin qubit creation and analysis in orbit, and bounded its stability.