Method detectors

python/cudaq/kernel/kernel_builder.py:1308–1322

Define N detectors by pairing two measurement vectors element-wise. Standard form for cross-round detectors: each detector ``i`` is the parity of ``prev[i]`` and ``curr[i]``. Both arguments must be ``list[cudaq.measure_handle]`` handles (returned by ``kernel.mz`` on a

(self, prev, curr)

            qec.ObservableOp(values, observableIndex=idxAttr)

    def detectors(self, prev, curr):
        """Define N detectors by pairing two measurement vectors
        element-wise. Standard form for cross-round detectors: each
        detector ``i`` is the parity of ``prev[i]`` and ``curr[i]``.
        Both arguments must be ``list[cudaq.measure_handle]`` handles
        (returned by ``kernel.mz`` on a ``qvector``).
        """
        with self.ctx, self.insertPoint, self.loc:
            prevV = self.__qecOperandValue(prev, "detectors")
            currV = self.__qecOperandValue(curr, "detectors")
            for v in (prevV, currV):
                if not cc.StdvecType.isinstance(v.type):
                    emitFatalError("kernel.detectors arguments must each be a "
                                   "list[cudaq.measure_handle]")
            qec.DetectorsOp(prevV, currV)

    def adjoint(self, otherKernel, *target_arguments):
        """