Quantum Transport in Nanostructures, Explained
How electrons move through nanowires, quantum dots and other nanostructures, and how confinement and tunneling shape device behavior.
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Tagged: Quantum Tunneling
43 articles
Quantum Wave Packet Dynamics and Spreading
A wave packet is a localized quantum state that spreads over time. Its evolution under the Schrödinger equation, tunneling, revivals and experiments.
Quantum Transport Simulations in Nanoscale Devices
Quantum transport simulations predict how electrons move through nanoscale devices. Methods, tunneling, interference and applications in device design.
Quantum Path Integral Methods and Their Uses
Feynman’s path integral sums over all possible histories of a system. How it is used for tunneling, scattering, field theory and numerical methods.
Quantum Anonymous Transfer and Untraceable Messages
Quantum anonymous transmission hides who sent a message and to whom using shared entanglement. How the protocols work and their limits.
Adiabatic Quantum Computing: Model and Limits
Adiabatic quantum computing solves problems by slowly changing a Hamiltonian. The adiabatic theorem, Ising models, energy gaps and limits.
Quantum Interference: The Engine of Every Speedup
Quantum interference lets amplitudes add or cancel. Why it drives every quantum speedup, with examples from experiments and algorithms.
Quantum Dot Cellular Automata: Computing Without Wires
Quantum dot cellular automata compute by the position of electrons in dots instead of current in wires. Logic gates, advantages and challenges.
Quantum Annealers: What the Hardware Actually Does
What quantum annealers such as D-Wave’s physically do, how they differ from gate-based computers, and what real use cases show about their limits.
Quantum Phase Slip Junctions: The Dual of Josephson
Quantum phase slip junctions are the dual of Josephson junctions in superconducting nanowires. Their physics and possible uses.
Quantum Transistors: Switching One Electron at a Time
Single-electron and quantum transistors switch using tunneling and discrete charge. How they work, their applications and challenges.
Graphene-Based Quantum Devices and Their Promise
Why graphene interests quantum device researchers: quantum dots, the quantum Hall effect, interference, spintronics and sensors.
