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….
Category: Quantum Computing
Measurement-Based Quantum Feedback
In both classical and quantum systems, feedback is a powerful control tool. If you want to stabilize a rocket’s flight path, reduce noise in an amplifier, or keep a car’s….
Quantum Zeno Effect
In classical life, observing something doesn’t change its behavior. You can watch a rock fall or a car drive, and they won’t behave any differently because you’re watching them. But….
Weak Measurements
In standard quantum mechanics, measurements are usually described as strong or projective measurements. This means that when you measure a quantum system—say, the spin of an electron or the polarization….
Quantum Non-Demolition Measurements
In classical physics, measuring something doesn’t change it. You can check the temperature of water or the position of a car without disturbing them. But in quantum mechanics, measurement is….
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 Control Techniques
In quantum mechanics, a quantum state represents the full information about a physical system. Controlling these states with precision is essential to all areas of quantum technologies—whether it’s computing, sensing,….
Photonic Quantum Gates
In classical computing, we use logic gates (like AND, OR, NOT) to perform operations on bits. Each gate manipulates bits—values of 0 or 1—based on defined rules. In quantum computing,….
Quantum Metrology with Light
Metrology is the science of measurement. It focuses on how accurately we can measure physical quantities—like time, length, mass, temperature, etc. Quantum metrology, on the other hand, goes beyond the….