Quantum Tomography: State, Process and Detector
Quantum tomography reconstructs states, processes and detectors from measurements. Density matrices, methods and uses in device characterization.
BasicsAlgorithmsHardwareError CorrectionCryptographyMachine LearningInformation TheoryPhysics & SimulationApplicationsIndustry & Careers
All Articles
Every explainer on QuantumExplainer.com, newest first. Use the pillars above to jump straight to a topic.
739 articles
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 Field Theory Simulations on Qubits
How quantum field theories can be simulated on qubits, the computational techniques used and what these simulations aim to reveal.
Quantum Chemistry Simulations: What Runs Today
Which quantum chemistry simulations run today, classical methods such as Hartree-Fock and DFT, and where quantum computers might add value.
Quantum Walk Search Algorithms and Their Speedups
Search algorithms based on quantum walks: continuous and discrete time walks on graphs, their relation to Grover’s algorithm and their limits.
Atomic Quantum Computing: Ions, Atoms and Traps
Atomic quantum computing with trapped ions and neutral atoms: how atoms serve as qubits, their advantages and the challenges of scaling up.
NV Centres in Diamond: Qubits at Room Temperature
NV centers are defects in diamond whose electron spin stays coherent at room temperature. Structure, sensing, imaging and qubit applications.
Photonic Quantum Computing: Light as the Qubit
Photonic quantum computing uses photons as qubits. How photons encode information, uses in cryptography and the challenges of scaling up.
Topological Qubits: The Promise and the Evidence
Topological qubits promise built-in error resistance through anyon braiding. The promise, the gates, the challenges and the experimental evidence.
Quantum Dots as Qubits: A Hardware Platform Review
Quantum dots as a qubit platform, alongside their other uses in displays, solar cells and imaging: how they work and production challenges.
Superconducting Qubits: The Leading Hardware
Superconducting qubits such as transmons are the most widely used quantum hardware. Their history, types, architectures and challenges.
Trapped Ion Quantum Computing: Fidelity and Speed
Trapped-ion quantum computers hold charged atoms in electromagnetic traps. Their high fidelity, slower gates, scaling challenges and uses.