Quantum supremacy
Quantum supremacy is the demonstration that a quantum computer performs a computational task beyond the feasible capabilities of available classical computers.
Quantum Programming in Depth
A claim that a quantum device has solved a problem that no classical computer can solve in a reasonable amount of time.
- How it is used
- Frames an experimental milestone for demonstrating quantum computation beyond a classical computer's reasonable-time capability.
- How deep it goes
- Defines the milestone and its limitations, then evaluates classical baselines and practical costs without detailing a supremacy algorithm.
- Examples
- Uses Google and USTC demonstrations, artificial problems, later classical refutations, and a milestone diagram.
- What you can do after
- Evaluate supremacy claims by comparing useful performance, implementation overhead, and the strongest available classical solution.
Read how Quantum Programming in Depth explains quantum supremacy →
Building Quantum Software with Python
Quantum advantage is a performance improvement on a computational task that a quantum computer achieves over available classical approaches.
- How it is used
- Evaluates when quantum, classical, or hybrid approaches offer useful computational improvements.
- How deep it goes
- Explains probability states, parallel amplitude changes, measurement, and entanglement, while deferring detailed physics and implementation.
- Examples
- Uses Fourier-transform complexity, eight outcome–probability pairs, and physical-process simulation as concrete examples.
- What you can do after
- Evaluate quantum, classical, and hybrid approaches for problems involving transforms, sampling, optimization, estimation, or simulation.
Read how Building Quantum Software with Python explains quantum supremacy →
Related concepts
- classical computercontrasts with · A classical computer is a computing system that represents and processes information using classical, non-quantum physical states and logic.
- quantum computingmeasures · Quantum computing is computation that represents and processes information using quantum-mechanical states and operations.
- quantum parallelismproduced by · Quantum parallelism is the ability of a quantum instruction to perform corresponding elementary operations simultaneously across many affected value pairs.
- quantum measurementproduced by · Quantum measurement is the process of obtaining a classical outcome from a quantum system according to probabilities determined by its state, generally changing that state.
- quantum computerproduced by · A quantum computer is a computing device that processes information using quantum-mechanical states and operations.
These guides are generated from the text of Manning books by Manning's knowledge graph and link to the sections they draw on. The full books are available on liveBook and at manning.com.