Correlation Archives - IEEE Transactions on Quantum Engineering

A Sparse-Event Simulation Engine to Model Coincidence-Based Ranging Architectures in Quantum Lidar

December 31, 2025Marco Passafiume Raviraj Adve Boniface Yogendran Bhashyam BalajiQuantum EngineeringBackscatter, Correlation, Engines, Jitter, Laser radar, Noise, Optical waveguides, Photonics, Quantum entanglement, Quantum radar

Abstract: Nonclassical radar and lidar systems have received substantial interest recently; however, although many experimental demonstrations have provided deep physical knowledge of such systems, there remains a lack of effective system models to obtain fundamental metrics such as range resolution as a function of system parameters. This work introduces a high-fidelity simulation platform to mimic […]

Log-Domain Decoding of Quantum LDPC Codes Over Binary Finite Fields

September 21, 2021Ching-Yi Lai; Kao-Yueh KuoOpen Access, Quantum InformationBelief propagation, Correlation, Decoding, Parity check codes

A quantum stabilizer code over GF(q) corresponds to a classical additive code over GF(q2) that is self-orthogonal with respect to a symplectic inner product. We study the decoding of quantum low-density parity-check (LDPC) codes over binary finite fields GF(q = 2l) by the sum-product algorithm, also known as belief propagation (BP). Conventionally, a message in a nonbinary BP for quantum codes […]

Benchmarking Hamiltonian Noise in the D-Wave Quantum Annealer

January 11, 2021Tristan Zaborniak; Rogério de SousaOpen Access, Quantum InformationAnnealing, Benchmark testing, Correlation, Logic gates, Qubit, Stationary state, Time measurement

Various sources of noise limit the performance of quantum computers by altering qubit states in an uncontrolled manner throughout computations and reducing their coherence time. In quantum annealers, this noise introduces additional fluctuations to the parameters defining the original problem Hamiltonian, such that they find the ground states of problems perturbed from those originally programmed. […]