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This paper presents a scheme which generates multi-photon entangled states based on Mach–Zehnder interferometer and is mainly composed of a photon source with weak measurement, two beam splitters and two orthogonal polarizers. This method can obtain higher efficiency and flexibility compared to previously proposed methods. Furthermore, a practical protocol of the fiber-based setup is proposed. It...
The purpose of reconciliation, one of classical aspects of quantum key distribution (QKD) protocol, is to mitigate errors after the distribution of quantum information over a quantum channel. In this paper, a rate-adaptive method is proposed by means of a channel coding scheme where specific low-density parity-check (LDPC) codes are adapted in the Slepian-Wolf coding system. Puncturing and shortening...
Quantum key reconciliation is an essential process of quantum key distribution (QKD). It aims to correct the transmission errors after the distribution of quantum objects over a quantum channel, where two legitimate parties use a classical public authenticated channel to disclose correlated bits for agreeing on their common key. This work proposes an alternative promising method employing LDPC-codes...
Optical wireless communication has emerged as a promising complementary technology for Radio Frequency technology. Reliability and survivability of solid state lighting devices has attracted researchers and is gaining attention as they provide synergistically illumination and communication. Furthermore optical wireless communication is environmental friendly and also helps in energy conservation....
The prototyping design of the channel coding in communication systems such as IEEE 802.16e (WiMAX) has become more sophisticated because of the increasing need for interoperability. Understanding its performance in the design and implementation of forward error correction codes in a real-time manner is necessary for rapid prototyping in research areas that are primarily based on emulation and stand-alone...
With the materialization of light emitting devices for solid state lighting, visible light communication (VLC) has provided a prospect to realize low cost, high speed, power efficient and secure data transmission in addition to lighting. Incandescent and fluorescent light sources are being replaced by light emitting diodes (LED) which are not only energy efficient but also help in reducing carbon...
In conventional security mechanism, security services based on symmetric key cryptography assume keys to be distributed prior to secure communications. The core function of exchanging and sharing a secret key between two endpoints are the secure key management methodology which is one of the most critical elements need to be more concerned when integrating cryptographic functions into the system....
For LDPC decoding, a class of weighted bit-flipping algorithms is much simpler than a belief propagation algorithm. This work proposes a modified Gradient Descent Bit-Flipping algorithm based on Reliability Ratio with an adaptive threshold to address trade-off between performance and latency. From numerical results, the proposed algorithm achieves lower latency without an expense of performance. It...
The quantum key reconciliation is an essential step of QKD protocol. Its main objective is to correct the transmission error after the distribution of quantum objects over a quantum channel, where two legitimate parties use a classical interactive communication for agreeing on their common key. This paper presents an alternative quantum key reconciliation method based on the Slepian-Wolf coding scheme...
This paper emphasizes the development of network monitoring appliance for monitoring network health, network resources and for further analysis of Quantum Key Distribution (QKD) performance where QKD devices located in different locations. It provides tools and services for end users who enable to view real time QKD performance statistics on the network. As it is very important to keep track of each...
The quantum key reconciliation is an essential step of Quantum Key Distribution (QKD) systems for correcting error in the raw keys which happens after the transmission over a quantum channel, where two legitimate parties make their correlated bits identical by exchanging messages over the public channel. This paper presents an alternative method for error correction of quantum key reconciliation by...
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