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Change to expectation calculation to accept hamiltonian object

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This commit is contained in:
tankya2
2025-02-20 16:37:55 +08:00
parent 106dfcb50e
commit 4cb6edc013
3 changed files with 257 additions and 103 deletions
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12
src/qibotn/circuit_convertor.py
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@@ -195,12 +195,12 @@ class QiboCircuitToEinsum:
gates.append((operand, (qubit,)))
return gates
def expectation_operands(self, pauli_string):
def expectation_operands(self, ham_gates):
"""Create the operands for pauli string expectation computation in the
interleave format.
Parameters:
pauli_string: A string representating the list of pauli gates.
ham_gates: A list of gates derived from Qibo hamiltonian object.
Returns:
Operands for the contraction in the interleave format.
@@ -208,8 +208,6 @@ class QiboCircuitToEinsum:
input_bitstring = "0" * self.circuit.nqubits
input_operands = self._get_bitstring_tensors(input_bitstring)
pauli_string = dict(zip(range(self.circuit.nqubits), pauli_string))
pauli_map = pauli_string
(
mode_labels,
@@ -228,11 +226,7 @@ class QiboCircuitToEinsum:
next_frontier = max(qubits_frontier.values()) + 1
pauli_gates = self.get_pauli_gates(
pauli_map, dtype=self.dtype, backend=self.backend
)
gates_inverse = pauli_gates + self.gate_tensors_inverse
gates_inverse = ham_gates + self.gate_tensors_inverse
(
gate_mode_labels_inverse,