Quantum Zero-Point Energy: What It Is and Is Not
Zero-point energy is the energy a quantum system keeps at absolute zero. Where it comes from, the Casimir effect, and why it cannot power machines.
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The Quantum Vacuum: The Lowest Energy State
The quantum vacuum is the lowest energy state of a field. Zero-point energy, vacuum fluctuations, the Casimir effect and Hawking radiation explained.
Quantum Information Science: The Field Explained
Quantum information science explained: qubits, gates and circuits, algorithms, cryptography, communication, sensing, simulation and machine learning.
Quantum Suicide and Immortality: The Experiment
The quantum suicide thought experiment and quantum immortality: how they follow from the many-worlds interpretation and why physicists dispute them.
Quantum Gravity: What Counts as a Breakthrough
What would count as real progress in quantum gravity: gravitons, black hole physics, the Big Bang, emergent spacetime and proposed experiments.
Quantum Geometry: Space at the Smallest Scale
Quantum geometry treats lengths, areas and volumes as discrete at the Planck scale. Its history, links to entanglement, black holes and cosmology.
Quantum Gravity: The Problem Physics Has Not Solved
Why quantum mechanics and general relativity resist unification, and how string theory, loop quantum gravity, asymptotic safety and other approaches try.
Quantum Fluctuations: Why Empty Space Is Not Empty
Quantum fluctuations follow from the uncertainty principle. How vacuum fluctuations, virtual particles, zero-point energy and the Casimir effect relate.
Quantum Finance: The Benefits Being Claimed
The benefits claimed for quantum finance, from risk management to portfolio and asset allocation, and which rely on hardware that does not yet exist.
Quantum Entanglement Theory, Explained Plainly
Quantum entanglement explained without jargon: its history, Einstein’s objections, Bell’s theorem, key experiments and uses in computing and cryptography.
Quantum Engineering: The Discipline and the Jobs
What quantum engineering involves: computing, communication, sensing, cryptography and metrology, the skills it needs and the challenges it faces.
Can Entanglement Be Used to Communicate?
Why entanglement cannot send information faster than light, and how it is still used in quantum key distribution, teleportation and quantum networks.