Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Interference between independent photonic integrated devices for quantum key distribution

Not Accessible

Your library or personal account may give you access

Abstract

Advances in quantum computing are a rapidly growing threat towards modern cryptography. Quantum key distribution (QKD) provides long-term security without assuming the computational power of an adversary. However, inconsistencies between theory and experiment have raised questions in terms of real-world security, while large and power-hungry commercial systems have slowed wide-scale adoption. Measurement-device-independent QKD (MDI-QKD) provides a method of sharing secret keys that removes all possible detector side-channel attacks which drastically improves security claims. In this Letter, we experimentally demonstrate a key step required to perform MDI-QKD with scalable integrated devices. We show Hong–Ou–Mandel interference between weak coherent states carved from two independent indium phosphide transmitters at 431 MHz with a visibility of 46.5±0.8%. This Letter demonstrates the feasibility of using integrated devices to lower a major barrier towards the adoption of QKD in metropolitan networks.

© 2019 Optical Society of America

Full Article  |  PDF Article
More Like This
Hong–Ou–Mandel interference between independent III–V on silicon waveguide integrated lasers

C. Agnesi, B. Da Lio, D. Cozzolino, L. Cardi, B. Ben Bakir, K. Hassan, A. Della Frera, A. Ruggeri, A. Giudice, G. Vallone, P. Villoresi, A. Tosi, K. Rottwitt, Y. Ding, and D. Bacco
Opt. Lett. 44(2) 271-274 (2019)

Experimental measurement-device-independent quantum key distribution with uncharacterized encoding

Chao Wang, Shuang Wang, Zhen-Qiang Yin, Wei Chen, Hong-Wei Li, Chun-Mei Zhang, Yu-Yang Ding, Guang-Can Guo, and Zheng-Fu Han
Opt. Lett. 41(23) 5596-5599 (2016)

Reference-frame-independent, measurement-device-independent quantum key distribution using fewer quantum states

Donghwa Lee, Seongjin Hong, Young-Wook Cho, Hyang-Tag Lim, Sang-Wook Han, Hojoong Jung, Sung Moon, Kwang Jo Lee, and Yong-Su Kim
Opt. Lett. 45(9) 2624-2627 (2020)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (4)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (3)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved