Time-bin and Polarization Superdense Teleportation for Space Applications

Abstract

To build a global quantum communication network, low-transmission, fiber-based communication channels can be supplemented by using a free-space channel between a satellite and a ground station on Earth. We have constructed a system that generates hyperentangled photonic "ququarts" and measures them to execute multiple quantum communication protocols of interest. We have successfully executed and characterized superdense teleportation, a modified remote-state preparation protocol that transfers more quantum information than standard teleportation, for the same classical information cost, and moreover, is in principle deterministic. Our measurements show an average fidelity of $0.94\pm 0.02$, with a phase resolution of $\sim 7^{\circ }$, allowing reliable transmission of $>10^5$ distinguishable quantum states. Additionally, we have demonstrated the ability to compensate for the Doppler shift, which would otherwise prevent sending time-bin encoded states from a rapidly moving satellite, thus allowing the low-error execution of phase-sensitive protocols during an orbital pass. Finally, we show that the estimated number of received coincidence counts in a realistic implementation is sufficient to enable faithful reconstruction of the received state in a single pass.

arXiv comment34 pages, 14 figures, 3 tables

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Cited by in corpus (10)

• 648 Hilbert space dimensionality in a biphoton frequency comb
• The Deep Space Quantum Link: Prospective Fundamental Physics Experiments using Long-Baseline Quantum Optics
• Hyperentangled Time-bin and Polarization Quantum Key Distribution
• Generation and characterization of ultrabroadband polarization-frequency hyperentangled photons
• Remotely Establishing Polarization Entanglement over Noisy Polarization Channels
• Telecom-band Hyperentangled Photon Pairs from a Fiber-based Source
• Building a controlled-NOT gate between polarization and frequency
• Entanglement Verification of Hyperentangled Photon Pairs
• Towards Fully Passive Time-Bin Quantum Key Distribution over Moving Free-Space Channels
• Zero-added-loss entanglement multiplexing using time-bin spectral shearing