Realistic simulation of quantum computation using unitary and measurement channels

Understand

The implementation and practicality of quantum algorithms highly hinge on the quality of operations within a quantum processor.

• Therefore, including realistic error models in quantum computing simulation platforms is crucial for testing these algorithms.
• Existing classical simulation techniques of quantum information processing devices exhibit a trade-off between scalability (number of qubits that can be simulated) and accuracy (how close the simulation is to the target error model).
• In this paper, we introduce a new simulation approach that relies on approximating the density matrix evolution by a stochastic sum of unitary and measurement channels within a pure state simulation environment.