removed quimb.py as it is duplicate of eval_qu.py

src/qibotn/quimb.py

@@ -1,54 +0,0 @@
-import numpy as np
-import quimb.tensor as qtn
-from qibo.models import Circuit as QiboCircuit
-
-
-def from_qibo(
-    circuit: QiboCircuit,
-    is_mps: False,
-    psi0=None,
-    method="svd",
-    cutoff=1e-6,
-    cutoff_mode="abs",
-):
-    nqubits = circuit.nqubits
-    gate_opt = {}
-    if is_mps:
-        tncirc = qtn.CircuitMPS(nqubits, psi0=psi0)
-        gate_opt["method"] = method
-        gate_opt["cutoff"] = cutoff
-        gate_opt["cutoff_mode"] = cutoff_mode
-    else:
-        tncirc = qtn.Circuit(nqubits, psi0=psi0)
-
-    for gate in circuit.queue:
-        tncirc.apply_gate(
-            gate.name,
-            *gate.parameters,
-            *gate.qubits,
-            parametrize=False if is_mps else (len(gate.parameters) > 0),
-            **gate_opt
-        )
-
-    return tncirc
-
-
-def init_state_tn(nqubits, init_state_sv):
-    dims = tuple(2 * np.ones(nqubits, dtype=int))
-
-    return qtn.tensor_1d.MatrixProductState.from_dense(init_state_sv, dims)
-
-
-def eval(qasm: str, init_state, is_mps, backend="numpy"):
-    """Evaluate QASM with Quimb
-
-    backend (quimb): numpy, cupy, jax. Passed to ``opt_einsum``.
-
-    """
-    circuit = QiboCircuit.from_qasm(qasm)
-    init_state_mps = init_state_tn(circuit.nqubits, init_state)
-    circ_quimb = from_qibo(circuit, is_mps, psi0=init_state_mps)
-    interim = circ_quimb.psi.full_simplify(seq="DRC")
-    amplitudes = interim.to_dense(backend=backend).flatten()
-
-    return amplitudes