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Added initial state for Quimb

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This commit is contained in:
tankya2
2023-11-07 17:08:57 +08:00
committed by Liwei Yang
parent 3f046beb1c
commit 2d48d3ddbe
1 changed files with 8 additions and 2 deletions
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10
src/qibotn/backends.py
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@@ -3,6 +3,7 @@ from qibo.config import raise_error
from qibotn import cutn from qibotn import cutn
from qibotn import quimb from qibotn import quimb
from qibo.states import CircuitResult from qibo.states import CircuitResult
import numpy as np
class QiboTNBackend(NumpyBackend): class QiboTNBackend(NumpyBackend):
@@ -30,7 +31,7 @@ class QiboTNBackend(NumpyBackend):
raise_error(NotImplementedError, "Not implemented in QiboTN.") raise_error(NotImplementedError, "Not implemented in QiboTN.")
def execute_circuit( def execute_circuit(
self, circuit, initial_state=None, nshots=None, return_array=False self, circuit, initial_state=None, nshots=None, return_array=True
): # pragma: no cover ): # pragma: no cover
"""Executes a quantum circuit. """Executes a quantum circuit.
@@ -64,7 +65,12 @@ class QiboTNBackend(NumpyBackend):
state = cutn.eval_mps(circuit, gate_algo, self.dtype) state = cutn.eval_mps(circuit, gate_algo, self.dtype)
if self.platform == "qu_tensornet": if self.platform == "qu_tensornet":
state = quimb.eval(circuit.to_qasm(), initial_state, backend="numpy")
#init_state = np.random.random(2**circuit.nqubits) + 1j * np.random.random(2**circuit.nqubits)
#init_state = init_state / np.sqrt((np.abs(init_state) ** 2).sum())
init_state = np.zeros(2**circuit.nqubits, dtype=self.dtype)
init_state[0] = 1.0
state = quimb.eval(circuit.to_qasm(), init_state, backend="numpy")
if return_array: if return_array:
return state.flatten() return state.flatten()