Computer architecture Archives - IEEE Transactions on Quantum Engineering

A Proposed Quantum Framework for Low-Complexity Quantum Simulation and Spectrum Estimation of Hankel-Patterned Systems

November 1, 2023Mostafizur Rahaman LaskarEnabling TechnologiesComputer architecture, Logic gates, Matrix decomposition, Signal processing, Signal processing algorithms, Sparse matrices, Symmetric matrices

The structured matrix completion problem (SMCP) is ubiquitous in several signal processing applications. In this article, we consider a fixed pattern, namely, the Hankel-structure for the SMCP under quantum formalism. By exploiting its structure, a lower-gate-complexity quantum circuit realization of a Hankel system is demonstrated. Further, we propose a quantum simulation algorithm for the Hankel-structured […]

Spatiotemporal Multiplexed Rydberg Receiver

September 29, 2023Samuel H. KnarrQuantum Computer ArchitectureComputer architecture, Couplings, Laser beams, Measurement by laser beam, Probes, Radio frequency, Receivers

Rydberg states of alkali atoms, where the outer valence electron is excited to high principal quantum numbers, have large electric dipole moments allowing them to be used as sensitive, wideband, electric field sensors. These sensors use electromagnetically induced transparency (EIT) to measure incident electric fields. The characteristic timescale necessary to establish EIT determines the effective […]

A Modular Quantum Compilation Framework for Distributed Quantum Computing

August 10, 2023Davide FerrariQuantum Computer ArchitectureComputer architecture, Logic gates, Network topology, Program processors, Quantum circuit, Quantum computing, Qubit

For most practical applications, quantum algorithms require large resources in terms of qubit number, much larger than those available with current noisy intermediate-scale quantum processors. With the network and communication functionalities provided by the quantum Internet, distributed quantum computing (DQC) is considered as a scalable approach for increasing the number of available qubits for computational […]

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 […]

Timing Constraints Imposed by Classical Digital Control Systems on Photonic Implementations of Measurement-Based Quantum Computing

November 2, 2022John R. ScottOpen Access, Special Section on Classical Control SystemsComputer architecture, Control systems, Logic gates, Photonics, Quantum computing, Qubit, Timing

Most of the architectural research on photonic implementations of measurement-based quantum computing (MBQC) has focused on the quantum resources involved in the problem with the implicit assumption that these will provide the main constraints on system scaling. However, the “flying-qubit” architecture of photonic MBQC requires specific timing constraints that need to be met by the […]

Timing Constraints Imposed by Classical Digital Control Systems on Photonic Implementations of Measurement-Based Quantum Computing

May 19, 2022John R. Scott; Krishna C. BalramOpen Access, Quantum InformationComputer architecture, Control systems, Logic gates, Photonics, Quantum computing, Qubit, Timing

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

Quantum Circuit Architecture Optimization for Variational Quantum Eigensolver via Monto Carlo Tree Search

October 11, 2021Fan-Xu Meng; Ze-Tong Li; Xu-Tao Yu; Zai-Chen ZhangOpen Access, Quantum Computer Architecture, Quantum InformationComputer architecture, Costs, Logic gates, Optimization, Quantum circuit, Qubit, Training

The advent of noisy intermediate-scale quantum (NISQ) devices provide crucial promise for the development of quantum algorithms. Variational quantum algorithms have emerged as one of the best hopes to utilize NISQ devices. Among these is the famous variational quantum eigensolver (VQE), where one trains a parameterized and fixed quantum circuit (or an ansatz) to accomplish […]

Survey on Quantum Circuit Compilation for Noisy Intermediate-Scale Quantum Computers: Artificial Intelligence to Heuristics

March 23, 2021Janusz Kusyk; Samah M. Saeed; Muharrem Umit UyarOpen Access, Quantum SoftwareArtificial intelligence, Computer architecture, Computers, Hardware, Logic gates, Quantum circuit, Qubit

Computationally expensive applications, including machine learning, chemical simulations, and financial modeling, are promising candidates for noisy intermediate scale quantum (NISQ) computers. In these problems, one important challenge is mapping a quantum circuit onto NISQ hardware while satisfying physical constraints of an underlying quantum architecture. Quantum circuit compilation (QCC) aims to generate feasible mappings such that […]

On the Stochastic Analysis of a Quantum Entanglement Distribution Switch

February 9, 2021Gayane Vardoyan; Saikat Guha; Philippe Nain; Don TowsleyOpen Access, Quantum Computer Architecture, Quantum InformationAnalytical models, Computer architecture, Numerical models, Quantum entanglement, Qubit, Repeaters, Switches

In this article, we study a quantum entanglement distribution switch that serves k users in a star topology. We model variants of the system as continuous-time Markov chains and obtain expressions for switch capacity, expected number of qubits stored in memory at the switch, and the quantum memory occupancy distribution. We obtain a number of analytic results […]