Quantum Parameter Estimation
In both classical and quantum physics, we often want to estimate unknown parameters that describe physical systems. For example: Estimating such parameters is essential in science and engineering — particularly….
Tag: quantum systems
Quantum Feedback Control
Feedback control is a universal concept in both classical and quantum systems. It refers to a process where a system’s current behavior is measured, and those results are used to….
Optimal Control in Quantum Systems
Optimal control is a field of study that focuses on finding the best way to manipulate a system over time. In quantum mechanics, it deals with designing precise control strategies—typically….
Quantum State Tomography
In classical physics, if you know an object’s position and velocity, you can describe its state completely. But in quantum mechanics, things are more subtle. A quantum state holds all….
Quantum Mutual Information
Let’s begin with the basic idea of mutual information from classical information theory. It tells us how much knowing one variable tells us about another. For example, if you know….
Adiabatic Quantum Computing
Adiabatic Quantum Computing (AQC) is an alternative model of quantum computation that differs significantly from the well-known gate-based and measurement-based approaches. Instead of performing computations through sequences of gates or….
Many-Body Physics Simulations
In the realm of quantum mechanics, a “many-body” system refers to a group of multiple interacting particles, such as electrons in a solid or atoms in a gas. Unlike single-particle….
Entanglement Swapping
Before diving into entanglement swapping, it’s important to understand quantum entanglement. Entanglement is a unique quantum phenomenon where two or more particles become connected in such a way that the….
Trapped Ion Qubits
Trapped ion qubits are individual atoms that are used as the basic units of quantum information — called qubits. These atoms are held in place (or “trapped”) using electric and….