Paper
19 September 2019 Towards hyperentangled time-bin and polarization superdense teleportation in space
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Abstract
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.
© (2019) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Joseph C. Chapman, Ian Miller, Ian Call, Leo Oshiro, Matthias Zajdela, Brooke Polak, and Paul G. Kwiat "Towards hyperentangled time-bin and polarization superdense teleportation in space", Proc. SPIE 11167, Quantum Technologies and Quantum Information Science V, 1116702 (19 September 2019); https://doi.org/10.1117/12.2537081
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Cited by 1 scholarly publication.
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KEYWORDS
Interferometers

Polarization

Beam splitters

Pulsed laser operation

Switches

Photons

Quantum communications

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