Bonn 2025 – scientific programme
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QI: Fachverband Quanteninformation
QI 15: Quantum Computing Implementations (joint session QI/Q)
QI 15.6: Talk
Tuesday, March 11, 2025, 15:15–15:30, HS II
Quantum teleportation of a Bell state via cluster states on IBM Quantum — •Branislav Ilich1,2 and Nikolay Vitanov1,2 — 1Sofia University St. Kliment Ohridski — 2Center for Quantum Technologies
We report experimental results on the teleportation of a two-qubit entangled Bell state across a six-qubit entangled system on ibm_sherbrooke. The teleportation protocol begins with the generation of a four-qubit cluster state on Bob's subsystem and the preparation of a two-qubit Bell state on Alice's subsystem. The entangled state is then teleported to the last two qubits of Bob's cluster state through a series of controlled-NOT (CNOT) gates.
To maximize the fidelity of the protocol, we implemented targeted optimizations within IBM's transpiler, enabling precise control over gate placement and error mitigation. These modifications were critical in achieving a protocol fidelity of 90%, which represents the upper limit for IBM's quantum hardware.
Our findings demonstrate the feasibility of reliably teleporting entangled states across distributed quantum systems and highlight the importance of hardware-aware optimization strategies in achieving high-fidelity quantum information processing. This work serves as a step forward in scaling entanglement distribution protocols, with implications for quantum communication and distributed quantum computing.
Keywords: Quantum Teleportation; Cluster states; Entanglement; IBM Quantum; Bell states