supermarq.benchmarks.mermin_bell
================================

.. py:module:: supermarq.benchmarks.mermin_bell


Classes
-------

.. autoapisummary::

   supermarq.benchmarks.mermin_bell.MerminBell


Module Contents
---------------

.. py:class:: MerminBell(num_qubits: int)

   Bases: :py:obj:`supermarq.benchmark.Benchmark`


   The Mermin-Bell benchmark is a test of a quantum computer's ability to exploit purely quantum
   phenomemna such as superposition and entanglement. It is based on the famous Bell-inequality
   tests of locality. Performance is based on a QPU's ability to prepare a GHZ state and measure
   the Mermin operator.


   .. py:method:: circuit() -> cirq.Circuit

      The Mermin-Bell circuit, simultaneously measuring Mermin terms in a GHZ circuit.

      :returns: The Mermin-Bell `cirq.Circuit`.



   .. py:method:: score(counts: dict[str, float]) -> float

      Compute the score for the N-qubit Mermin-Bell benchmark.

      This function assumes the regular big endian ordering of bitstring results.

      :param counts: A dictionary containing the measurement counts from circuit execution.

      :returns: The score for the Mermin-Bell benchmark score.



   .. py:attribute:: mermin_operator


   .. py:attribute:: num_qubits


   .. py:attribute:: qubits