Security Archives - IEEE Transactions on Quantum Engineering

Decentralization Using Quantum Blockchain: A Theoretical Analysis

November 2, 2022Zebo YangOpen Access, Quantum InternetAuthentication, Blockchains, Cryptography, Hash functions, Peer-to-peer computing, Quantum computing, Security

Blockchain technology has been prominent recently due to its applications in cryptocurrency. Numerous decentralized blockchain applications have been possible due to blockchains’ nature of distributed, secured, and peer-to-peer storage. One of its technical pillars is using public-key cryptography and hash functions, which promise a secure, pseudoanonymous, and distributed storage with nonrepudiation. This security is believed […]

Versatile and Concurrent FPGA-Based Architecture for Practical Quantum Communication Systems

November 2, 2022Andrea StancoOpen Access, Special Section on Classical Control SystemsComputer architecture, Field programmable gate arrays, Optical transmitters, Quantum system, Receivers, Security, Standards

This article presents a hardware and software architecture, which can be used in those systems that implement practical quantum key distribution (QKD) and quantum random-number generation (QRNG) schemes. This architecture fully exploits the capability of a System on a Chip (SoC), which comprehends both a field-programmable gate array (FPGA) and a dual-core CPU unit. By […]

Versatile and Concurrent FPGA-Based Architecture for Practical Quantum Communication Systems

January 27, 2022Andrea Stanco; Francesco B. L. Santagiustina; Luca Calderaro; Marco Avesani; Tommaso Bertapelle; Daniele Dequal; Giuseppe Vallone; Paolo VilloresiOpen Access, Quantum Computer Architecture, Quantum InformationComputer architecture, Field programmable gate arrays, Optical transmitters, Quantum system, Receivers, Security, Standards

Attacking the Quantum Internet

July 7, 2021Takahiko Satoh; Shota Nagayama; Shigeya Suzuki; Takaaki Matsuo; Michal Hajdušek; Rodney Van MeterOpen Access, Quantum Computer Architecture, Quantum InformationInternet, Photonics, Quantum entanglement, Quantum networks, Qubit, Repeaters, Security

The main service provided by the coming quantum Internet will be creating entanglement between any two quantum nodes. We discuss and classify attacks on quantum repeaters, which will serve roles similar to those of classical Internet routers. We have modeled the components for and structure of quantum repeater network nodes. With this model, we point […]

Quantum Algorithms for Mixed Binary Optimization Applied to Transaction Settlement

March 3, 2021Lee Braine; Daniel J. Egger; Jennifer Glick; Stefan WoernerOpen Access, Quantum Computer Architecture, Quantum Information, Quantum SoftwareApproximation algorithms, Computers, Hardware, Optimization, Quantum algorithm, Quantum computing, Security

In this article, we extend variational quantum optimization algorithms for quadratic unconstrained binary optimization problems to the class of mixed binary optimization problems. This allows us to combine binary decision variables with continuous decision variables, which, for instance, enables the modeling of inequality constraints via slack variables. We propose two heuristics and introduce the transaction […]