Module roqoqo::measurements

Provides the functionality for post-processing the measurement output of the quantum computing programs.

Measurement classes take the result of the circuit running (or being simulated) on a backend and post-process a measurement record of sigma-z measurements or a statevector/density matrix to expectation values of observables. The measurement classes require additional information in the form of measurement input to reconstruct observables.

Note

The functionality to perform the actual measurement is provided by the measurement operations crate::operations.

Structs

• Cheated
  Cheated measurement using state obtained from simulator backend.
• CheatedInput
  Provides necessary information to run a crate::measurements::Cheated measurement.
• CheatedPauliZProduct
  Collected information for executing a cheated measurement of a PauliZ product.
• CheatedPauliZProductInput
  Provides necessary information to run a crate::measurements::CheatedPauliZProduct measurement.
• ClassicalRegister
  Classical register measurement.
• PauliZProduct
  Collected information for executing a measurement of PauliZ product.
• PauliZProductInput
  Provides Necessary Information to run a crate::measurements::PauliZProduct measurement.

Enums

• PauliProductsToExpVal
  Defines how Pauli Products expectation values are post-processed into observable expectation value.

Traits

• Measure
  Allows generic interfacing with roqoqo measurements.
• MeasureExpectationValues
  Allows generic interfacing with roqoqo measurements that evaluate expectation values.

Type Aliases

• OperatorSparseVec
  Represents Operator acting on Hilbert space as a sparse list of two indices and a value.
• PauliProductMask
  Provides Mask for a single PauliProduct.
• SingleReadoutPauliProductMasks
  Provides PauliProductMasks for all Pauli Products measured from one readout register.