Metropolitan Quantum Key Distribution with Silicon Photonics

Metropolitan Quantum Key Distribution with Silicon Photonics

Photonic integrated circuits provide a compact and stable platform for quantum photonics. Here we demonstrate a silicon photonics quantum key distribution (QKD) encoder in the first high-speed polarization-based QKD field tests. The systems reach composable secret key rates of 1.039 Mbps in a local...

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Bibliographic Details
Main Authors: Lentine, Anthony, Cai, Hong, Long, Christopher M., Boynton, Nicholas, Martinez, Nicholas, DeRose, Christopher, Grein, Matthew, Trotter, Douglas, Starbuck, Andrew, Pomerene, Andrew, Hamilton, Scott, Davids, Paul, Urayama, Junji, Englund, Dirk, Bunandar, Darius, Lee, Catherine, Chen, Changchen, Wong, Ngai Chuen, Camacho, Ryan
Other Authors: Lincoln Laboratory
Format: Article
Language:English
Published: American Physical Society 2018
Online Access:http://hdl.handle.net/1721.1/114631
https://orcid.org/0000-0002-8218-5656
https://orcid.org/0000-0002-5125-8023
https://orcid.org/0000-0003-1998-6159
Description
Summary:Photonic integrated circuits provide a compact and stable platform for quantum photonics. Here we demonstrate a silicon photonics quantum key distribution (QKD) encoder in the first high-speed polarization-based QKD field tests. The systems reach composable secret key rates of 1.039 Mbps in a local test (on a 103.6-m fiber with a total emulated loss of 9.2 dB) and 157 kbps in an intercity metropolitan test (on a 43-km fiber with 16.4 dB loss). Our results represent the highest secret key generation rate for polarization-based QKD experiments at a standard telecom wavelength and demonstrate photonic integrated circuits as a promising, scalable resource for future formation of metropolitan quantum-secure communications networks.

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