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  1. Nov 2, 2023In the domain of quantum metrology, cat states have demonstrated their utility despite their inherent fragility with respect to losses. Here, we introduce noise robust optical cat states which exhibit a metrological robustness for phase estimation in the regime of high photon numbers. These cat states are obtained from the intense laser driven process of high harmonic generation (HHG), and ...
  2. In addition to the conventional approaches for generating optical cat states ourjoumtsev2007generation ; glancy2008methods , there have been recent advances in the generation of high photon number optical cat states, by using the platform of intense laser matter interaction for quantum state engineering of light lewenstein2021generation ; stammer2023quantum ; bhattacharya2023strong .
  3. researchgate.net

    Nov 13, 2023Metrological robustness of high photon number optical cat states T om´ as F ern´ andez Martos, 1 Maciej Lewenstein, 1, 2 Grzegorz Rajchel-Mieldzio´ c, 1 , ∗ and Philipp Stammer 1
  4. researchgate.net

    Sep 9, 2024Here, we introduce noise robust optical cat states which exhibit a metrological robustness for phase estimation in the regime of high photon numbers. These cat states are obtained from the intense ...
  5. inspirehep.net

    Nov 2, 2023Here, we introduce noise robust optical cat states which exhibit a metrological robustness for phase estimation in the regime of high photon numbers. These cat states are obtained from the intense laser driven process of high harmonic generation (HHG), and show a resilience against photon losses. ... demonstrating that high photon number ...
  6. new.acemap.info

    Abstract In the domain of quantum metrology, cat states have demonstrated their utility despite their inherent fragility with respect to losses. Here, we introduce noise robust optical cat states which exhibit a metrological robustness for phase estimation in the regime of high photon numbers. These cat states are obtained from the intense laser driven process of high harmonic generation (HHG ...
  7. semanticscholar.org

    FIG. 2. (a): Purity γη of the noisy cat states ρ̂η. (b): Fidelity between the noisy cat states and their pure counterparts. The pure states have a reduced amplitude by a factor √ η to maximize the fidelity. A vertical dashed line at η = 0.469 (53.1% photon loss) indicates up to which FHHG > F±. Note that for η → 0 all the noisy states become |0 0|. In both plots we consider an ...
  8. semanticscholar.org

    FIG. 3. Quantum Fisher information for the noisy HHG-cat state, the pure and noisy odd cat states, normalized to the QFI of the pure odd cat state (F/F−) in the high photon number regime. Vertical lines at η = 0.741 (25.9% photon loss) and η = 0.463 (53.7% photon loss) indicate when FηHHG ≈ F− and FηHHG ≈ F η −, respectively. The initial amplitude of the pure odd cat state is α ...
  9. Nonetheless, optical cat states are still used in quantum metrology since they can provide an enhanced phase sensitivity [25]. In addition to the conventional approaches for gener-ating optical cat states [22,23], there have been recent advances in the generation of high photon number optical cat states, by using the platform of intense laser ...

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