qrisp.QuantumArray.init_state

QuantumArray.init_state(tuple_list)

Method to initiate arbitrary quantum states in this array. The semantics are similar to the QuantumVariable equivalent of this method.

The given state will be normalized.

Parameters

tuple_listlist of tuples

The list of tuples describing the quantum state. The first componenet of the tuples needs to represent the array and the second the required amplitude.

Raises

Exception

Tried to initialize quantum state on qubits which are not fresh anymore.

Examples

We initiate a quantum state on an array and evaluate the measurement probabilities.

>>> from qrisp import QuantumArray, QuantumFloat
>>> qtype = QuantumFloat(3)
>>> q_array = QuantumArray(qtype, shape = 3)
>>> q_array.init_state([(np.array([1, 2, 3]), 1), (np.array([1, 2, 2]), 0.5j)])
>>> print(q_array)
{OutcomeArray([1, 2, 3]): 0.8, OutcomeArray([1, 2, 2]): 0.2}