Overcoming the private capacity of optical point-to-point quantum key distribution

Koji Azuma

doi:10.1117/12.2594444

1 August 2021 Overcoming the private capacity of optical point-to-point quantum key distribution

Koji Azuma

Proceedings Volume 11835, Quantum Communications and Quantum Imaging XIX; 118350K (2021) https://doi.org/10.1117/12.2594444
Event: SPIE Optical Engineering + Applications, 2021, San Diego, California, United States

Abstract

The private capacity of a lossy bosonic channel shows that there remains not much room to improve known point-to-point quantum key distribution (QKD) protocols further, in terms of the key rate versus distance. The current question in our field is how to overcome this fundamental limit with the help of a single station in the middle between communicators. In this talk, we explore recent trials to achieve this goal, such as adaptive measurement-device-independent QKD and twin-field QKD. These trials are good milestones towards the realization of quantum repeater networks.

Conference Presentation

Citation Download Citation

Koji Azuma "Overcoming the private capacity of optical point-to-point quantum key distribution", Proc. SPIE 11835, Quantum Communications and Quantum Imaging XIX, 118350K (1 August 2021); https://doi.org/10.1117/12.2594444

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
PRESENTATION

WATCH
PRESENTATION SAVE TO MY LIBRARY

GET CITATION

KEYWORDS

Quantum key distribution

Quantum optics

RELATED CONTENT

Nanoscale quantum optics opportunities and challenges for quantum communication,...
Proceedings of SPIE (January 01 1900)

Advanced techniques for free-space optical quantum cryptography over water
Proceedings of SPIE (March 15 2016)

New efficient quantum key distribution protocol
Proceedings of SPIE (September 13 2002)

Impurities in diamond: a new revival for quantum optics
Proceedings of SPIE (August 30 2010)

Non-stationary entanglement and squeezing beyond the standard limits
Proceedings of SPIE (May 31 2006)

Introduction to optical quantum cryptography
Proceedings of SPIE (December 28 2007)

Subscribe to Digital Library

Receive Erratum Email Alert

Keywords/Phrases

Search In:

Publication Years