Source code for qrisp.circuit.qubit

"""
********************************************************************************
* Copyright (c) 2025 the Qrisp authors
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License 2.0 which is available at
* http://www.eclipse.org/legal/epl-2.0.
*
* This Source Code may also be made available under the following Secondary
* Licenses when the conditions for such availability set forth in the Eclipse
* Public License, v. 2.0 are satisfied: GNU General Public License, version 2
* with the GNU Classpath Exception which is
* available at https://www.gnu.org/software/classpath/license.html.
*
* SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
********************************************************************************
"""

import numpy as np
from jax.core import AbstractValue, Primitive, raise_to_shaped_mappings

qubit_hash = np.zeros(1)


[docs] class Qubit: """ This class describes qubits. Qubits are created by supplying the identifier string. Attributes ---------- identifier : str A string to identify the Qubit. Examples -------- We create a Qubit and add it to a :ref:`QuantumCircuit`: >>> from qrisp import QuantumCircuit, Qubit >>> qb = Qubit("alphonse") >>> qc = QuantumCircuit() >>> qc.add_qubit(qb) >>> qc.x(qb) >>> print(qc) :: ┌───┐ alphonse: ┤ X ├ └───┘ """ __slots__ = [ "hash_value", "qs", "identifier", "allocated", "recompute", "lock", "perm_lock", ] def __init__(self, identifier): self.identifier = identifier self.hash_value = int(qubit_hash[0]) qubit_hash[0] += 1 self.lock = False self.perm_lock = False def __str__(self): return self.identifier def __repr__(self): return "Qubit(" + self.identifier + ")" def __hash__(self): return self.hash_value def __eq__(self, other): return self.hash_value == other.hash_value def __add__(self, other): if not isinstance(other, list): raise Exception( f"Tried to add Qubit to type {type(other)} (only list ist possible)" ) return [self] + other def __radd__(self, other): if not isinstance(other, list): raise Exception( f"Tried to add Qubit to type {type(other)} (only list ist possible)" ) return other + [self]