Robustness of Non-Gaussian Entanglement against Noisy Amplifier and Attenuator Environments

2011/03/31 by Krishna Kumar Sabapathy, J. Solomon Ivan, R. Simon · 63 citations
Computer Science · Physics and Astronomy · #Amplifier #Attenuator (electronics) #Gaussian #Optoelectronics #Physics #Quantum #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum entanglement #Quantum mechanics #Robustness (evolution) #Statistical physics #quant-ph

paper · pdf · doi:10.1103/physrevlett.107.130501

published in Physical Review Letters 107(13), 130501 (American Physical Society) · 4 pages, 4 figures

openalex publication_date 2011/09/19 · arxiv created 2011/11/17 · arxiv updated 2011/11/18 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

The recently developed Kraus representation for bosonic Gaussian channels is employed to study analytically the robustness of non-Gaussian entanglement against evolution under noisy attenuator and amplifier environments, and compare it with the robustness of Gaussian entanglement. Our results show that some non-Gaussian states with one ebit of entanglement are more robust than all Gaussian states, even the ones with arbitrarily large entanglement, a conclusion of direct consequence to the recent conjecture by Allegra et al. [Phys. Rev. Lett. 105, 100503 (2010)].

Citations

• Quantum key distribution using gaussian-modulated coherent states
• Entangled states of light and their robustness against photon absorption
• Mixed-State Entanglement and Distillation: Is there a “Bound” Entanglement in Nature?
• Entanglement distillation from Gaussian input states
• Unconditional Quantum Teleportation
• Inseparability Criterion for Continuous Variable Systems
• Peres-Horodecki Separability Criterion for Continuous Variable Systems

Cited by

• Some aspects of the interplay between bipartite correlations and quantum channels
• Enhanced continuous generation of non-Gaussianity through optomechanical modulation
• Classical light sources with tunable temporal coherence and tailored photon number distributions
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