Adapting coherent-state superpositions in noisy channels - Archive ouverte HAL
Pré-Publication, Document De Travail Année : 2024

Adapting coherent-state superpositions in noisy channels

Jan Provazník
  • Fonction : Auteur
Petr Marek
  • Fonction : Auteur
Radim Filip
  • Fonction : Auteur

Résumé

Quantum non-Gaussian states are crucial for the fundamental understanding of non-linear bosonic systems and simultaneously advanced applications in quantum technologies. In many bosonic experiments the important quantum non-Gaussian feature is the negativity of the Wigner function, a cornerstone for quantum computation with bosons. Unfortunately, the negativities present in complex quantum states are extremely vulnerable to the effects of decoherence, such as energy loss, noise and dephasing, caused by the coupling to the environment, which is an unavoidable part of any experimental implementation. An efficient way to mitigate its effects is by adapting quantum states into more resilient forms. We propose an optimal protection of superpositions of coherent states against a sequence of asymmetric thermal lossy channels by suitable squeezing operations.

Dates et versions

hal-04617010 , version 1 (19-06-2024)

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Jan Provazník, Petr Marek, Julien Laurat, Radim Filip. Adapting coherent-state superpositions in noisy channels. 2024. ⟨hal-04617010⟩
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