Coherence and Decoherence: The Two Sides
Coherence and decoherence as two sides of one process: how coherence is lost, how it is modeled and simulated, and how it can be protected.
BasicsAlgorithmsHardwareError CorrectionCryptographyMachine LearningInformation TheoryPhysics & SimulationApplicationsIndustry & Careers
Tagged: Density Matrix
7 articles
Quantum Renyi Entropy Power and Its Inequalities
Quantum Rényi entropies and entropy power inequalities: definitions, relations to von Neumann entropy and uses in communication.
Amplitude Damping Channels and Energy Loss
The amplitude damping channel models energy loss, such as a qubit decaying to its ground state. Its Kraus operators, effects and correction.
Quantum Process Tomography: Characterising a Gate
Quantum process tomography reconstructs the full description of a quantum operation from measurements. Methods, costs, challenges and uses.
Quantum Tomography: State, Process and Detector
Quantum tomography reconstructs states, processes and detectors from measurements. Density matrices, methods and uses in device characterization.
Quantum Many-Body Theory: Interacting Particles
Quantum many-body theory studies systems of many interacting particles. Wavefunctions, Hamiltonians, entanglement, quasiparticles and mean field theory.
Quantum State Tomography: Measuring an Unknown State
Quantum state tomography reconstructs an unknown quantum state from many measurements. The methods, maximum likelihood estimation and its costs.
