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Interaction-free measurements and counterfactual computation in IBM\n quantum computers

2020/05/07 by J.A. Casas, Casas, J. Alberto, Bryan Zaldívar +1
Computer Science · Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Theory (hep-th) #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum Physics (quant-ph)

paper · pdf · doi:10.48550/arxiv.2005.03547

openalex publication_date 2020/05/07 · openalex created_date 2022/07/26 · openalex updated_date 2026/07/28

Abstract

The possibility of interaction-free measurements and counterfactual\ncomputations is a striking feature of quantum mechanics pointed out around 20\nyears ago. We implement such phenomena in actual 5-qubit, 15-qubit and 20-qubit\nIBM quantum computers by means of simple quantum circuits. The results are in\ngeneral close to the theoretical expectations. For the larger circuits (with\nnumerous gates and consequently larger errors) we implement a simple error\nmitigation procedure which improve appreciably the performance.\n

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