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.
Original language | English |
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Title of host publication | Quantum Technologies and Quantum Information Science V |
Editors | Mark T. Gruneisen, Miloslav Dusek, Paul M. Alsing, John G. Rarity |
Publisher | SPIE |
ISBN (Electronic) | 9781510630376 |
DOIs | |
State | Published - 2019 |
Externally published | Yes |
Event | Quantum Technologies and Quantum Information Science V 2019 - Strasbourg, France Duration: Sep 10 2019 → Sep 11 2019 |
Publication series
Name | Proceedings of SPIE - The International Society for Optical Engineering |
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Volume | 11167 |
ISSN (Print) | 0277-786X |
ISSN (Electronic) | 1996-756X |
Conference
Conference | Quantum Technologies and Quantum Information Science V 2019 |
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Country/Territory | France |
City | Strasbourg |
Period | 09/10/19 → 09/11/19 |
Funding
This work was primarily supported by NASA Grant No. NNX16AM26G. This work was also supported by a DoD, Office of Naval Research, National Defense Science and Engineering Graduate Fellowship (NDSEG).
Keywords
- Hyperentanglement
- Interferometer
- Optical switch
- Quantum communication
- Superdense teleportation