東華大學圖書館 |

Language: English

Help

回圖書館首頁

手機版館藏查詢

Back

Switch To: Labeled | MARC Mode | ISBD

Security Proofs of Quantum Key Distr...

Li, Chenyang,

Linked to FindBook

Google Book

Amazon

博客來

Security Proofs of Quantum Key Distribution With Imperfect Source Devices: From Practical Devices to Passive System /

Record Type:	Electronic resources : Monograph/item
Title/Author:	Security Proofs of Quantum Key Distribution With Imperfect Source Devices: From Practical Devices to Passive System // Chenyang Li.
Author:	Li, Chenyang,
Description:	1 electronic resource (107 pages)
Notes:	Source: Dissertations Abstracts International, Volume: 85-10, Section: B.
Contained By:	Dissertations Abstracts International85-10B.
Subject:	Communication. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30988344
ISBN:	9798382192765

Security Proofs of Quantum Key Distribution With Imperfect Source Devices: From Practical Devices to Passive System /
Li, Chenyang,

Security Proofs of Quantum Key Distribution With Imperfect Source Devices: From Practical Devices to Passive System /Chenyang Li. - 1 electronic resource (107 pages)

Source: Dissertations Abstracts International, Volume: 85-10, Section: B.

Quantum key distribution (QKD) is a method that enables two parties separated by distance to share a secret data string. QKD is based on the principles of quantum mechanics and offers information-theoretical security, making it a strong contender for the next generation of cryptography. However, the use of imperfect devices can lead to vulnerabilities and potential quantum hacking schemes. It is crucial to address these imperfections and restore the security of QKD, especially for individuals who use realistic devices for secure communication. QKD can be categorized into two types based on key encoding methods: discrete-variable (DV) QKD and continuous-variable (CV) QKD. It can also be classified based on the transmission medium: fiber-based QKD, free-space-based QKD, and chip-based QKD. This thesis focuses on chip-based DVQKD and fiber-based CVQKD.In the first part, we study the chip-based DVQKD system in the presence of phase-and polarization-dependent loss. We develop innovative methods to restore the security and improve the key rate. The solution is practical, requiring no hardware modifications, and has been adopted by other groups.The second part focuses on fiber-based CVQKD systems that use intensity fluctuating sources. We establish the security by incorporating the concept from DVQKD. Our proposed techniques are practical and do not require any hardware adjustments for existing CVQKD systems.Lastly, we present a general framework for passive CVQKD. Our proposed passive protocol offers a one-time solution to eliminate all potential side channels or imperfections in the source. Interestingly, we discover that the passive source is an excellent choice for the discrete-modulated CVQKD protocol, since the passive protocol offers the same key rate as its active counterpart, while removing all modulator side channels that have plagued the active ones.To sum up, this thesis introduces novel techniques and practical solutions to address imperfections in source devices in different QKD systems. We also propose a passive protocol that can handle all loopholes in source devices in a one-time process. We anticipate that this thesis will facilitate significant advancements in chip-based and fiber-based QKD implementations in the future.

English

ISBN: 9798382192765Subjects--Topical Terms:

524709
Communication.
Subjects--Index Terms:

Secure communication

Security Proofs of Quantum Key Distribution With Imperfect Source Devices: From Practical Devices to Passive System /
LDR:03826nmm a22004453i 4500 001 2428839
005 20250420214333.5
006 m o d
007 cr|nu||||||||
008 261011s2024 miu||||||m |||||||eng d
020 $a 9798382192765
035 $a (MiAaPQD)AAI30988344
035 $a AAI30988344
040 $a MiAaPQD $b eng $c MiAaPQD $e rda
100 1 $a Li, Chenyang, $e author. $3 3816306
245 1 0 $a Security Proofs of Quantum Key Distribution With Imperfect Source Devices: From Practical Devices to Passive System / $c Chenyang Li.
264 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2024
300 $a 1 electronic resource (107 pages)
336 $a text $b txt $2 rdacontent
337 $a computer $b c $2 rdamedia
338 $a online resource $b cr $2 rdacarrier
500 $a Source: Dissertations Abstracts International, Volume: 85-10, Section: B.
500 $a Advisors: Lo, Hoi-Kwong Committee members: Qian, Li; Poon, Joyce; Peev, Momtchil; Aitchison, Stewart J.; Lo, Hoi-Kwong.
502 $b Ph.D. $c University of Toronto (Canada) $d 2024.
520 $a Quantum key distribution (QKD) is a method that enables two parties separated by distance to share a secret data string. QKD is based on the principles of quantum mechanics and offers information-theoretical security, making it a strong contender for the next generation of cryptography. However, the use of imperfect devices can lead to vulnerabilities and potential quantum hacking schemes. It is crucial to address these imperfections and restore the security of QKD, especially for individuals who use realistic devices for secure communication. QKD can be categorized into two types based on key encoding methods: discrete-variable (DV) QKD and continuous-variable (CV) QKD. It can also be classified based on the transmission medium: fiber-based QKD, free-space-based QKD, and chip-based QKD. This thesis focuses on chip-based DVQKD and fiber-based CVQKD.In the first part, we study the chip-based DVQKD system in the presence of phase-and polarization-dependent loss. We develop innovative methods to restore the security and improve the key rate. The solution is practical, requiring no hardware modifications, and has been adopted by other groups.The second part focuses on fiber-based CVQKD systems that use intensity fluctuating sources. We establish the security by incorporating the concept from DVQKD. Our proposed techniques are practical and do not require any hardware adjustments for existing CVQKD systems.Lastly, we present a general framework for passive CVQKD. Our proposed passive protocol offers a one-time solution to eliminate all potential side channels or imperfections in the source. Interestingly, we discover that the passive source is an excellent choice for the discrete-modulated CVQKD protocol, since the passive protocol offers the same key rate as its active counterpart, while removing all modulator side channels that have plagued the active ones.To sum up, this thesis introduces novel techniques and practical solutions to address imperfections in source devices in different QKD systems. We also propose a passive protocol that can handle all loopholes in source devices in a one-time process. We anticipate that this thesis will facilitate significant advancements in chip-based and fiber-based QKD implementations in the future.
546 $a English
590 $a School code: 0779
650 4 $a Communication. $3 524709
650 4 $a Quantum physics. $3 726746
650 4 $a Computer engineering. $3 621879
650 4 $a Electrical engineering. $3 649834
653 $a Secure communication
653 $a Continuous variable
653 $a Discrete variable
653 $a Quantum communication
653 $a Quantum key distribution
690 $a 0459
690 $a 0599
690 $a 0544
690 $a 0464
710 2 $a University of Toronto (Canada). $b Electrical and Computer Engineering. $e degree granting institution. $3 3816307
720 1 $a Lo, Hoi-Kwong $e degree supervisor.
773 0 $t Dissertations Abstracts International $g 85-10B.
790 $a 0779
791 $a Ph.D.
792 $a 2024
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30988344