Advances in Chip-Based Quantum Key Distribution

Liu, Qiang; Huang, Yinming; Du, Yongqiang; Zhao, Zhengeng; Geng, Minming; Zhang, Zhenrong; Wei, Kejin

doi:10.3390/e24101334

Cited by 24 publications

(10 citation statements)

References 201 publications

(211 reference statements)

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“…In 2012, the measurement-device-independent (MDI) QKD protocol was first proposed, offering practicality and immunity to attacks on all detectors [9]. In 2014, the round-robin differential phase shift (RRDPS) QKD protocol was introduced, and its security was demonstrated without relying on detecting channel disturbances [5,[11][12][13]21]. In 2015, Wang Xiangbin and colleagues from China proposed a measurement-device-independent QKD protocol based on four different intensities of decoy states [25].…”

Section: Quantum Key Distribution Technologymentioning

confidence: 99%

A Multi-Path QKD Algorithm with Multiple Segments

Liu,

Che,

Xie

et al. 2024

JCSANDM

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Quantum Key Distribution (QKD) provides unconditional peer-to-peer security based on the principles of quantum physics. By utilizing relay nodes, the security of QKD can be extended over longer distances. However, the introduction of relay nodes brings both security and communication success rates issues. To tackle those issues we propose an enhanced multi-path scheme. The key features of our proposal are as follows: 1. By taking the reliability of relay nodes as one of the algorithm inputs,making the scheme more suitable for partially trusted QKD (PTQKD) networks. 2. By using Multi-Segment Multi-Path approach increases the difficulty for attackers to obtain complete key information and improves the security of PTQKD. 3. The adaptive routing algorithm generates a sufficient number of diverse paths based on node contribution rate, key freshness, and reliability. We conducted a theoretical analysis of the algorithm,and simulation results on PTQKD demonstrate that our method outperforms traditional QKD methods in terms of security and transmission success rate. This advancement has the potential to enhance the adoption of QKD networks.

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Section: Quantum Key Distribution Technologymentioning

confidence: 99%

A Multi-Path QKD Algorithm with Multiple Segments

Liu,

Che,

Xie

et al. 2024

JCSANDM

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“…[94] have developed a low‐cost, short‐range QKD system for consumer applications that can support a peak SKR of 20 Kbps. With the recent advances in integrated photonics and chip‐based QKD [95], considerable progress has been made in the development of handheld QKD terminals [96] that can be used for short‐range applications including secure ATM transactions and device‐to‐device quantum key exchange [97]. Further advancement in chip‐based QKD technology would enable the widespread commercialisation of mobile QKD devices in future 6G networks.…”

Section: Quantum Information Technologies In 6g Networkmentioning

confidence: 99%

The quantum internet: A synergy of quantum information technologies and 6G networks

Rozenman,

Kundu,

Liu

et al. 2023

IET Quantum Communication

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The quantum internet is a cutting‐edge paradigm that uses the unique characteristics of quantum technology to radically alter communication networks. This new network type is expected to collaborate with 6G networks, creating a synergy that will fundamentally alter how we communicate, engage, and trade information. The improved security, increased speed, and increased network capacity of the quantum internet will lead to the emergence of a broad variety of new applications and services. The current state of quantum technology and its integration with 6G networks are summarised in this study, with an emphasis on the key challenges and untapped possibilities. The main goal is to get knowledge about how the quantum internet might impact communication in the future and alter several economic and societal sectors.

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“…However, the practical MDI-QKD still experiences relatively low key rates compared to the conventional BB84 protocol due to the requirement of Bell-state measurements. Apart from these advances, adopting QKD widely has been a challenge, and it has been demonstrated that large-scale deployment will likely require chip-based devices for improved performance, miniaturization, and enhanced functionality 12 – 18 . Most significantly, these integrated photonic chips offer numerous benefits such as low cost, low power consumption, and well-established batch fabrication techniques 19 .…”

Section: Introductionmentioning

confidence: 99%

High-dimensional quantum key distribution implemented with biphotons

Sekga

Mafu

Senekane

2023

Sci Rep

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We present a high-dimensional measurement device-independent (MDI) quantum key distribution (QKD) protocol employing biphotons to encode information. We exploit the biphotons as qutrits to improve the tolerance to error rate. Qutrits have a larger quantum system; hence they carry more bits of classical information and have improved robustness against eavesdropping compared to qubits. Notably, our proposed protocol is independent of measurement devices, thus eliminating the possibility of side-channel attacks. Also, we employ the finite key analysis approach to study the performance of our proposed protocol under realistic conditions where finite resources are used. Furthermore, we simulated the secret key rate for the proposed protocol in terms of the transmission distance for different fixed amounts of signals. The results prove that this protocol achieves a considerable secret key rate for a moderate transmission distance of 90 km by using $$10^{16}$$ 10 16 signals. Moreover, the expected secret key rate was simulated to examine our protocol’s performance at various intrinsic error rate values, $$Q=(0.3\%,0.6\%,1\%)$$ Q = ( 0.3 % , 0.6 % , 1 % ) caused by misalignment and instability due to the optical system. These results show that reasonable key rates are achieved with a minimum data size of about $$10^{14}$$ 10 14 signals which are realizable with the current technology. Thus, implementing MDI-QKD using finite resources while allowing intrinsic errors due to the optical system makes a giant step forward toward realizing practical QKD implementations.

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Advances in Chip-Based Quantum Key Distribution

Cited by 24 publications

References 201 publications

A Multi-Path QKD Algorithm with Multiple Segments

A Multi-Path QKD Algorithm with Multiple Segments

The quantum internet: A synergy of quantum information technologies and 6G networks

High-dimensional quantum key distribution implemented with biphotons

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