Daylight Operation of a High-Speed Free-Space Quantum Key Distribution using Silica-based Integration Chip and Micro-Optics-based Module

2019 ◽  
Author(s):  
Heasin Ko ◽  
Joong-Seon Choe ◽  
Byung-Seok Choi ◽  
Kap-Joong Kim ◽  
Jong-Hoi Kim ◽  
...  
Keyword(s):  
Free Space ◽  
Quantum Key Distribution ◽  
High Speed ◽  
Key Distribution ◽  
Micro Optics

scholarly journals High-speed free-space quantum key distribution system for urban daylight applications

2013 ◽  
Vol 52 (14) ◽  
pp. 3311 ◽  
Author(s):  
M. J. García-Martínez ◽  
N. Denisenko ◽  
D. Soto ◽  
D. Arroyo ◽  
A. B. Orue ◽  
...  
Keyword(s):  
Distribution System ◽  
Free Space ◽  
Quantum Key Distribution ◽  
High Speed ◽  
Key Distribution

Micro-optics based Polarization Decoding Module for Free-Space Quantum Key Distribution

2018 ◽  
Author(s):  
Byung-Seok Choi ◽  
Haesin Ko ◽  
Joong-Seon Choe ◽  
Kap-Joong Kim ◽  
Chun Ju Youn ◽  
...  
Keyword(s):  
Free Space ◽  
Quantum Key Distribution ◽  
Key Distribution ◽  
Micro Optics

scholarly journals Novel High-Speed Polarization Source for Decoy-State BB84 Quantum Key Distribution Over Free Space and Satellite Links

2013 ◽  
Vol 31 (9) ◽  
pp. 1399-1408 ◽  
Author(s):  
Zhizhong Yan ◽  
Evan Meyer-Scott ◽  
Jean-Philippe Bourgoin ◽  
Brendon L. Higgins ◽  
Nikolay Gigov ◽  
...  
Keyword(s):  
Free Space ◽  
Quantum Key Distribution ◽  
High Speed ◽  
Key Distribution ◽  
Decoy State ◽  
Satellite Links

scholarly journals Geometrical Optics Restricted Eavesdropping Analysis of Satellite-to-Satellite Secret Key Distillation

Entropy ◽  
2021 ◽  
Vol 23 (8) ◽  
pp. 950
Author(s):  
Ziwen Pan ◽  
Ivan B. Djordjevic
Keyword(s):  
Free Space ◽  
Quantum Key Distribution ◽  
Security Analysis ◽  
Key Distribution ◽  
Geometrical Optics ◽  
Secret Key ◽  
Satellite Applications

Traditionally, the study of quantum key distribution (QKD) assumes an omnipotent eavesdropper that is only limited by the laws of physics. However, this is not the case for specific application scenarios such as the QKD over a free-space link. In this invited paper, we introduce the geometrical optics restricted eavesdropping model for secret key distillation security analysis and apply to a few scenarios common in satellite-to-satellite applications.

High speed fiber-based quantum key distribution using polarization encoding

2005 ◽  
Author(s):  
Xiao Tang ◽  
Lijun Ma ◽  
Alan Mink ◽  
Anastase Nakassis ◽  
Barry Hershman ◽  
...  
Keyword(s):  
Quantum Key Distribution ◽  
High Speed ◽  
Key Distribution ◽  
Polarization Encoding

scholarly journals Long-Distance Free-Space Measurement-Device-Independent Quantum Key Distribution

2020 ◽  
Vol 125 (26) ◽  
Author(s):  
Yuan Cao ◽  
Yu-Huai Li ◽  
Kui-Xing Yang ◽  
Yang-Fan Jiang ◽  
Shuang-Lin Li ◽  
...  
Keyword(s):  
Free Space ◽  
Quantum Key Distribution ◽  
Key Distribution ◽  
Long Distance ◽  
Measurement Device ◽  
Space Measurement ◽  
Measurement Device Independent

scholarly journals Full daylight quantum-key-distribution at 1550 nm enabled by integrated silicon photonics

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
M. Avesani ◽  
L. Calderaro ◽  
M. Schiavon ◽  
A. Stanco ◽  
C. Agnesi ◽  
...  
Keyword(s):  
Optical Fibers ◽  
Silicon Photonics ◽  
Free Space ◽  
Quantum Key Distribution ◽  
Cost Effective ◽  
Key Distribution ◽  
Global Scale ◽  
Secret Key ◽  
Quantum Bit ◽  
Integrated Silicon Photonics

AbstractThe future envisaged global-scale quantum-communication network will comprise various nodes interconnected via optical fibers or free-space channels, depending on the link distance. The free-space segment of such a network should guarantee certain key requirements, such as daytime operation and the compatibility with the complementary telecom-based fiber infrastructure. In addition, space-to-ground links will require the capability of designing light and compact quantum devices to be placed in orbit. For these reasons, investigating available solutions matching all the above requirements is still necessary. Here we present a full prototype for daylight quantum key distribution at 1550 nm exploiting an integrated silicon-photonics chip as state encoder. We tested our prototype in the urban area of Padua (Italy) over a 145 m-long free-space link, obtaining a quantum bit error rate around 0.5% and an averaged secret key rate of 30 kbps during a whole sunny day (from 11:00 to 20:00). The developed chip represents a cost-effective solution for portable free-space transmitters and a promising resource to design quantum optical payloads for future satellite missions.

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