The Quantum Zeno Effect and Its Experiments
Experiments on the quantum Zeno effect, how frequent measurement suppresses transitions, and its uses in quantum control and computing.
Experiments on the quantum Zeno effect, how frequent measurement suppresses transitions, and its uses in quantum control and computing.
Topological qubits promise built-in error resistance through anyon braiding. The promise, the gates, the challenges and the experimental evidence.
Superconducting qubits such as transmons are the most widely used quantum hardware. Their history, types, architectures and challenges.
Hybrid quantum systems combine platforms, such as superconducting qubits with spins or photons, to use each one’s strengths. Types and challenges.
Quantum phase slip junctions are the dual of Josephson junctions in superconducting nanowires. Their physics and possible uses.
Flux qubits encode information in the direction of current in a superconducting loop. Their principle, noise sources and comparison with others.
Quantum nanoelectronics builds devices where quantum effects dominate, including quantum dots, superconducting qubits and spintronic parts.
Who builds quantum chips: IBM, Google, Intel, Rigetti, D-Wave, IonQ, Xanadu, PsiQuantum and others, and which qubit technology each one uses.
Why quantum computers cost millions: superconducting and trapped-ion hardware, cryogenic cooling, error rates, and what drives prices up.
The main quantum computing companies compared: hardware and software players, enablers, startups, investors and where IBM’s program fits.
What quantum computers cost to build and run, prices of systems from Rigetti, D-Wave and SpinQ, and why cloud access is cheaper for most users.
IBM’s quantum hardware and roadmap: the Eagle processor, error mitigation, dilution refrigerators, cloud access and research partnerships.