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An efficiency-loophole-free quantum key distribution (QKD) scheme is proposed, which involves no hardware change but a modification in the data post-processing step. The scheme applies to a generic class of detection systems which allow…

量子物理 · 物理学 2008-12-24 Xiongfeng Ma , Tobias Moroder , Norbert Lütkenhaus

The statistical-physics-based Kirchhoff-law-Johnson-noise (KLJN) key exchange offers a new and simple unclonable system for credit/debit card chip authentication and payment. The key exchange, the authentication and the communication are…

新兴技术 · 计算机科学 2016-07-21 Laszlo Bela Kish , Kamran Entesari , Claes-Goran Granqvist , Chiman Kwan

Quantum Key Distribution (QKD) is a technique that enables secure communication between two parties by sharing a secret key. One of the most well-known QKD protocols is the BB84 protocol, proposed by Charles Bennett and Gilles Brassard in…

量子物理 · 物理学 2023-12-12 SujayKumar Reddy M , Chandra Mohan B

We present two efficient quantum key distribution schemes over two different collective-noise channels. The accepted hypothesis of collective noise is that photons travel inside a time window small compared to the variation of noise.…

量子物理 · 物理学 2009-11-13 Xi-Han Li , Fu-Guo Deng , Hong-Yu Zhou

Quantum key distribution allows remote parties to generate information-theoretic secure keys. The bottleneck throttling its real-life applications lies in the limited communication distance and key generation speed, due to the fact that the…

量子物理 · 物理学 2019-04-24 Xiongfeng Ma , Pei Zeng , Hongyi Zhou

Quantum Key Distribution, as a branch of quantum mechanics in cryptography, can distribute keys between legal communication parties in an unconditionally secure manner, thus can realize in transmitting confidential information with…

量子物理 · 物理学 2020-03-10 Han Duo , Li Zhihui , Liu Chengji , Gao Feifei

Since the introduction of quantum computation by Richard Feynman in 1982, Quantum computation has shown exemplary results in various applications of computer science including unstructured database search, factorization, molecular…

量子物理 · 物理学 2020-07-29 Hemant Rana , Nitin Verma

We investigate the use of high-dimensional quantum key distribution (HD-QKD) in wireless access to hybrid quantum classical networks. We study the distribution of d-dimensional time-phase encoded states between an indoor wireless user and…

量子物理 · 物理学 2022-11-15 Osama Elmabrok , Mohsen Razavi , Tawfig Eltaif , Khaled A. Alaghbari

In this paper, we introduce the Kirchhoff-Law-Johnson-Noise (KLJN) as an approach to securing satellite communications. KLJN has the potential to revolutionize satellite communication security through its combination of simplicity,…

密码学与安全 · 计算机科学 2025-06-13 Lucas Truax , Sandip Roy , Laszlo B. Kish

Existing microgrid communication relies on classical public key systems, which are vulnerable to attacks from quantum computers. This paper uses quantum key distribution (QKD) to solve these quantum-era microgrid challenges. Specifically,…

密码学与安全 · 计算机科学 2020-01-09 Zefan Tang , Yanyuan Qin , Zimin Jiang , Walter O. Krawec , Peng Zhang

Quantum Key Distribution (QKD) offers provably secure, information-theoretic key exchange, but in long-distance scenarios without quantum repeaters, Trusted Nodes (TNs) are commonly employed despite introducing critical security risks. We…

量子物理 · 物理学 2026-03-30 Sumit Chaudhary , Davide Li Calsi , JinHyeock Choi , Marc Geitz , Janis Nötzel

Using quantum key distribution (QKD) protocols, a secret key is created between two distant users (transmitter and receiver) at a particular key rate. Quantum technology can facilitate secure communication for cryptographic applications,…

量子物理 · 物理学 2026-01-09 Venkat Abhignan , Mohit Mittal , Aditi Das , Megha Shrivastava

Quantum key distribution (QKD) which enables information-theoretically security is now heading towards quantum secure networks. It requires high-performance and cost-effective protocols while increasing the number of users. Unfortunately,…

量子物理 · 物理学 2023-02-07 Yiming Bian , Yi-Chen Zhang , Chao Zhou , Song Yu , Zhengyu Li , Hong Guo

We propose several methods for quantum key distribution (QKD) based upon the generation and transmission of random distributions of coherent or squeezed states, and we show that they are are secure against individual eavesdropping attacks.…

量子物理 · 物理学 2016-09-08 Frédéric Grosshans , Philippe Grangier

This paper introduces and demonstrates two new attacks against the Kirchhoff-Law-Johnson-Noise (KLJN) secure key exchange scheme. The attacks are based on random number generators with compromised security. First we explore the situation in…

密码学与安全 · 计算机科学 2020-05-22 Christiana Chamon , Shahriar Ferdous , Laszlo B. Kish

Recently, Chau introduced an experimentally feasible qudit-based quantum-key-distribution (QKD) scheme. In that scheme, one bit of information is phase encoded in the prepared state in a $2^n$-dimensional Hilbert space in the form…

量子物理 · 物理学 2017-02-15 H. F. Chau , Qinan Wang , Cardythy Wong

Quantum key distribution (QKD) can distribute symmetric key bits between remote legitimate users with the guarantee of quantum mechanics principles. For practical applications, the compact and robust photonic components for QKD are…

Quantum key distribution (QKD) offers unconditional information security by allowing two distant users to establish a common encryption key resilient to hacking. Resultingly, QKD networks interconnecting critical infrastructure and enabling…

Quantum key distribution (QKD) offers the promise of absolutely secure communications. However, proofs of absolute security often assume perfect implementation from theory to experiment. Thus, existing systems may be prone to insidious…

量子物理 · 物理学 2014-06-23 Samuel L. Braunstein , Stefano Pirandola

Quantum key distribution (QKD) is nowadays a well established method for generating secret keys at a distance in an information-theoretic secure way, as the secrecy of QKD relies on the laws of quantum physics and not computational…