4.6 Article

Multipartite entanglement to boost superadditivity of coherent information in quantum communication lines with polarization-dependent losses

相关参考文献

注意:仅列出部分参考文献,下载原文获取全部文献信息。
Article Multidisciplinary Sciences

Entropic singularities give rise to quantum transmission

Vikesh Siddhu

Summary: This article explores the non-additivity of quantum channel coherent information, linking it to the log singularity of quantum entropy and discovering that non-additivity can occur even in low-noise channels. The author introduces and links logarithmic singularities in the von-Neumann entropy with quantum transmission, identifying mechanisms responsible for both positivity and non-additivity of the coherent information. A general theorem is proven concerning the positivity of a channel's coherent information, with applications solving open problems and characterizing qubit channels.

NATURE COMMUNICATIONS (2021)

Article Physics, Multidisciplinary

Capacity of trace decreasing quantum operations and superadditivity of coherent information for a generalized erasure channel

Sergey N. Filippov

Summary: Losses in quantum communication lines can be state-dependent, with polarization-dependent losses being a prominent example. This study introduces the concept of a generalized erasure channel and analyzes biased trace decreasing quantum operations. The results show superadditivity of coherent information in the case of polarization dependent losses, with a significant difference between two-letter and single-letter quantum capacity.

JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL (2021)

Article Computer Science, Information Systems

Positivity and Nonadditivity of Quantum Capacities Using Generalized Erasure Channels

Vikesh Siddhu et al.

Summary: This paper explores the gluing process of combining complementary quantum channel pairs to form a composite channel. Different damping parameters and gluing process parameters are considered, leading to the analysis of channel information and nonadditivity characteristics under different conditions.

IEEE TRANSACTIONS ON INFORMATION THEORY (2021)

Article Physics, Multidisciplinary

Quantum codes from neural networks

Johannes Bausch et al.

NEW JOURNAL OF PHYSICS (2020)

Article Physics, Multidisciplinary

Experimental Observation of Coherent-Information Superadditivity in a Dephrasure Channel

Shang Yu et al.

PHYSICAL REVIEW LETTERS (2020)

Article Optics

Noise tolerance of Dicke states

Xiao-yu Chen et al.

PHYSICAL REVIEW A (2020)

Review Physics, Applied

Advances in high-dimensional quantum entanglement

Manuel Erhard et al.

NATURE REVIEWS PHYSICS (2020)

Article Engineering, Electrical & Electronic

Effect of Polarization Dependent Loss on the Quality of Transmitted Polarization Entanglement

Brian T. Kirby et al.

JOURNAL OF LIGHTWAVE TECHNOLOGY (2019)

Article Physics, Multidisciplinary

Dephrasure Channel and Superadditivity of Coherent Information

Felix Leditzky et al.

PHYSICAL REVIEW LETTERS (2018)

Article Multidisciplinary Sciences

Unbounded number of channel uses may be required to detect quantum capacity

Toby Cubitt et al.

NATURE COMMUNICATIONS (2015)

Article Optics

Experimental quantum process tomography of non-trace-preserving maps

Irene Bongioanni et al.

PHYSICAL REVIEW A (2010)

Review Physics, Multidisciplinary

Quantum entanglement

Ryszard Horodecki et al.

REVIEWS OF MODERN PHYSICS (2009)

Article Optics

Lower bounds on the nonzero capacity of Pauli channels

Jesse Fern et al.

PHYSICAL REVIEW A (2008)

Article Physics, Mathematical

The capacity of a quantum channel for simultaneous transmission of classical and quantum information

I Devetak et al.

COMMUNICATIONS IN MATHEMATICAL PHYSICS (2005)

Article Computer Science, Information Systems

The private classical capacity and quantum capacity of a quantum channel

I Devetak

IEEE TRANSACTIONS ON INFORMATION THEORY (2005)