Enabling Technologies Archives - IEEE Transactions on Quantum Engineering

Design and Analysis of Digital Communication Within an SoC-Based Control System for Trapped-Ion Quantum Computing

March 31, 2023Nafis IrtijaEnabling TechnologiesControl systems, Hardware, Logic gates, Quantum computing, Qubit, Radio frequency, Throughput

Large-scale quantum information processing requires the use of quantum error-correcting codes to mitigate the effects of noise in quantum devices. Topological error-correcting codes, such as surface codes, are promising candidates, as they can be implemented using only local interactions in a 2-D array of physical qubits. Procedures, such as defect braiding and lattice surgery, can […]

Noise Reduction Methods for Charge Stability Diagrams of Double Quantum Dots

November 2, 2022Sarah FleitmannEnabling Technologies, Open AccessFiltering algorithms, Information filters, Logic gates, Quantum dots, Smoothing methods, Tuning, Wiener filters

Operating semiconductor quantum dots as quantum bits requires isolating single electrons by adjusting gate voltages. The transitions of electrons to and from the dots appear as a honeycomb-like pattern in recorded charge stability diagrams (CSDs). Thus, detecting the pattern is essential to tune a double dot, but manual tuning is seriously time-consuming. However, automation of […]

Simultaneous Estimation of Parameters and the State of an Optical Parametric Oscillator System

November 2, 2022Qi YuEnabling Technologies, Open AccessEstimation, Filtering, Filtering theory, Kalman filters, Quantum computing, Quantum state, Quantum system

In this article, we consider the filtering problem of an optical parametric oscillator (OPO). The OPO pump power may fluctuate due to environmental disturbances, resulting in uncertainty in the system modeling. Thus, both the state and the unknown parameter may need to be estimated simultaneously. We formulate this problem using a state-space representation of the […]

Stable Turnkey Laser System for a Yb/Ba Trapped-Ion Quantum Computer

November 2, 2022Tianyi ChenEnabling Technologies, Open AccessFiber lasers, Ions, Laser beams, Laser stability, Optical fiber sensors, Optical fibers, Optical sensors

This work presents a stable and reliable turnkey continuous-wave laser system for a Yb/Ba multispecies trapped-ion quantum computer. The compact and rack-mountable optics system exhibits high robustness, operating over a year without realignment, regardless of temperature changes in the laboratory. The overall optical system is divided into a few isolated modules interconnected by optical fibers […]

A High-Resolution Single-Photon Arrival-Time Measurement With Self-Antithetic Variance Reduction in Quantum Applications: Theoretical Analysis and Performance Estimation

November 2, 2022Tony WuEnabling Technologies, Open AccessClocks, Generators, Photonics, Quantum state, Random variables, Single-photon avalanche diodes, Voltage control

An almost all-digital time-to-digital converter (TDC) possessing subpicosecond resolutions, scalable dynamic ranges, high linearity, high noise immunity, and moderate conversion rates can be achieved by a random sampling-and-averaging (RSA) approach with the self-antithetic variance reduction (SAVR) technique for time-correlated single-photon counting (TCSPC) quantum measurements. This article presents detailed theoretical analysis and behavior-model verifications of the […]