Kryptur · concept documentation
Concept titles
These pages are Kryptur’s own notes on the ideas behind the research programme. They explain the circuit model, exact simulation, compressed contraction, measurement, noise, and hybrid loops in original language.
Quantum circuit model
A quantum circuit is a timed sequence of reversible operations on qubits, followed by measurement. Kryptur uses this model to state research problems before any solver, simulator, or hardware run.
State-vector simulation
State-vector simulation stores every amplitude of a pure state and updates them when a gate is applied. It is exact for the circuit you wrote, and it is limited by memory that doubles with each added qubit.
Tensor-network contraction
A tensor network writes a many-qubit amplitude as a web of smaller tensors. Contraction multiplies that web down to the number you actually want, instead of allocating the full 2^n vector.
Measurement and sampling
A circuit ends by turning amplitudes into classical bitstrings. Research numbers are almost always estimates from many shots, and the uncertainty of those estimates is part of the result.
Noise and error
Real devices do not implement the unitary you wrote. Noise models and error-mitigation estimates are separate claims from the ideal circuit, and they have to be labeled as such.
Hybrid execution
Hybrid execution splits one problem across a quantum circuit and a classical program. The split, the data that cross the boundary, and the certificate you trust are the design.
Stay on these Kryptur URLs. Open the Library for every concept path, then follow the keyword in the address — for example /doc/state-vector-simulation. Published work that uses this vocabulary is on Raja Ram M.