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Fast disentanglement-based blind quantum source separation and process tomography using a feedforward quantum-classical adapting structure

Abstract : Our recent investigations of blind quantum source separation and process tomography methods for Heisenberg-coupled quantum bits (qubits) were focused on introducing a new separation principle, based on output disentanglement. We here extend them by proposing a more advanced implementation of their cost function and optimization algorithm. This leads us to move from a feedback to a feedforward adapting block, which avoids potential issues related to feedback in quantum circuits. The number of quantum source state preparations required to blindly adapt the separating system is thus strongly decreased (roughly from 107 to 104), yielding much faster adaptation.
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https://hal-amu.archives-ouvertes.fr/hal-01436499
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Submitted on : Monday, January 16, 2017 - 2:40:25 PM
Last modification on : Thursday, March 15, 2018 - 4:56:07 PM

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Deville Y., Deville A.. Fast disentanglement-based blind quantum source separation and process tomography using a feedforward quantum-classical adapting structure. 2016 24th European Signal Processing Conference (EUSIPCO), Aug 2016, Budapest, Hungary. ⟨10.1109/EUSIPCO.2016.7760299⟩. ⟨hal-01436499⟩

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