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Regensburg 2022 – wissenschaftliches Programm

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QI: Fachverband Quanteninformation

QI 4: Poster: Quantum Information

QI 4.26: Poster

Montag, 5. September 2022, 18:00–20:00, P2

Generating Entangled States on IBM QuantumSebastian Brandhofer1, Jelena Mackeprang2, •Daniel Bhatti2, Ilia Polian1, and Stefanie Barz21Institute of Computer Architecture and Computer Engineering & IQST, University of Stuttgart, Germany — 2Institute for Functional Matter and Quantum Technologies & IQST, University of Stuttgart, Germany

Commercially available quantum computers have reached the NISQ era and already can be employed to run basic quantum algorithms. One of the most important resources for quantum computations are entangled multi-qubit quantum states. Therefore, it is necessary to produce these states deterministically and with a high fidelity. Based on the specific physical architectures of different IBM quantum computers we produce graph states and GHZ states with the help of CPHASE and CNOT gates, respectively, and assess the quality of the state preparation. To optimize the resulting state fidelities, we develop and implement a classical optimization algorithm that considers various error characteristics of the qubits and the two-qubit gates.

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