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GeezerVison is showing github.com — Python-3/quantum/quantum_teleportation.py at master · https-github-com-nzysoft/Python-3 Expand file tree/ Copy pathquantum_teleportation.pyMore file actions 69 lines (58 loc) · 2.94 KB / Copy pathquantum_teleportation.pyFile metadata and controls69 lines (58 loc) · 2.94 KB 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 #!/usr/bin/env python3 """ Build quantum teleportation circuit using three quantum bits and 1 classical bit. The main idea is to send one qubit from Alice to Bob using the entanglement properties. This experiment run in IBM Q simulator with 1000 shots. . References: https://en.wikipedia.org/wiki/Quantum_teleportation https://qiskit.org/textbook/ch-algorithms/teleportation.html """ import numpy as np import qiskit from qiskit import Aer, ClassicalRegister, QuantumCircuit, QuantumRegister, execute def quantum_teleportation( theta: float = np.pi / 2, phi: float = np.pi / 2, lam: float = np.pi / 2 ) -> qiskit.result.counts.Counts: """ # >>> quantum_teleportation() #{'00': 500, '11': 500} # ideally # ┌─────────────────┐ ┌───┐ #qr_0: ┤ U(π/2,π/2,π/2) ├───────■──┤ H ├─■───────── # └──────┬───┬──────┘ ┌─┴─┐└───┘ │ #qr_1: ───────┤ H ├─────────■──┤ X ├──────┼───■───── # └───┘ ┌─┴─┐└───┘ │ ┌─┴─┐┌─┐ #qr_2: ───────────────────┤ X ├───────────■─┤ X ├┤M├ # └───┘ └───┘└╥┘ #cr: 1/═══════════════════════════════════════════╩═ Args: theta (float): Single qubit rotation U Gate theta parameter. Default to np.pi/2 phi (float): Single qubit rotation U Gate phi parameter. Default to np.pi/2 lam (float): Single qubit rotation U Gate lam parameter. Default to np.pi/2 Returns: qiskit.result.counts.Counts: Teleported qubit counts. """ qr = QuantumRegister(3, "qr") # Define the number of quantum bits cr = ClassicalRegister(1, "cr") # Define the number of classical bits quantum_circuit = QuantumCircuit(qr, cr) # Define the quantum circuit. # Build the circuit quantum_circuit.u(theta, phi, lam, 0) # Quantum State to teleport quantum_circuit.h(1) # add hadamard gate quantum_circuit.cx( 1, 2 ) # add control gate with qubit 1 as control and 2 as target. quantum_circuit.cx(0, 1) quantum_circuit.h(0) quantum_circuit.cz(0, 2) # add control z gate. quantum_circuit.cx(1, 2) quantum_circuit.measure([2], [0]) # measure the qubit. # Simulate the circuit using qasm simulator backend = Aer.get_backend("aer_simulator") job = execute(quantum_circuit, backend, shots=1000) return job.result().get_counts(quantum_circuit) if __name__ == "__main__": print( "Total count for teleported state is: " f"{quantum_teleportation(np.pi/2, np.pi/2, np.pi/2)}" ) |
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