Results 31 to 40 of about 236,146 (309)
Protecting three-dimensional entanglement from correlated amplitude damping channel [PDF]
Chinese Journal of Physics14 pages,, 6 figures, comments are welcome!
Xiao Xing +3 more
openalex +3 more sources
Queue-Channel Capacities with Generalized Amplitude Damping
, 2021 The generalized amplitude damping channel (GADC) is considered an important model for quantum communications, especially over optical networks. We make two salient contributions in this paper apropos of this channel. First, we consider a symmetric GAD channel characterized by the parameter $n=1/2,$ and derive its exact classical capacity, by ...
Vikesh Siddhu +4 more
openalex +4 more sources
Fidelity recovery scheme for quantum teleportation in amplitude damping channel
Acta Physica Sinica, 2015 During the course of quantum teleportation in amplitude damping channel, the quantum Bell entanglement state will suffer a de-coherence, which will lead to the quality decrease of quantum teleportation, or even communication failure. To overcome this influence, we propose a method to compensate for the de-coherence of Bell entanglement state.
Yang Guang, Baowang Lian, Min Nie
openalex +2 more sources
Dependence of Entanglement on Initial States under Amplitude Damping Channel in Non-Inertial Frames
Journal of Quantum Information Science, 2012 Under amplitude damping channel, the dependence of the entanglement on the initial states $| >_{1}$ and $| >_{2}$, which reduce to four orthogonal Bell states if we take the parameter of states $ =\pm 1/\sqrt{2}$ are investigated. We find that the entanglements for different initial states will decay along different curves even with the same ...
Wenpin Zhang, Junfeng Deng, Jiliang Jing
openalex +5 more sources
Coherence evolution in two-qubit system going through amplitude damping channel [PDF]
Science China Physics, Mechanics & Astronomy, 2017 In this paper, we analyze the evolution of quantum coherence in a two-qubit system going through the amplitude damping channel. After they have gone through this channel many times, we analyze the systems with respect to the coherence of their output states.
Ming‐Jing Zhao, Teng Ma, Yu-Quan Ma
openalex +5 more sources
Optimized four-qubit quantum error correcting code for amplitude damping channel [PDF]
Quantum error correction (QEC) is essential for reliable quantum information processing. Targeting a particular error channel, both the encoding and the recovery channel can be optimized through a biconvex optimization to give a high-performance, noise-adapted QEC scheme.
Xuanhui Mao, Qian Xu, Liang Jiang
openalex +3 more sources
Bounding the quantum capacity with flagged extensions [PDF]
Quantum, 2022 In this article we consider flagged extensions of convex combination of quantum channels, and find general sufficient conditions for the degradability of the flagged extension.
Farzad Kianvash +2 more
doaj +1 more source
Entanglement Robustness via Spatial Deformation of Identical Particle Wave Functions
Entropy, 2021 We address the problem of entanglement protection against surrounding noise by a procedure suitably exploiting spatial indistinguishability of identical subsystems.
Matteo Piccolini +5 more
doaj +1 more source
IET Quantum Communication, 2023 Quantum communication is an integral part of quantum computing, where teleportation of a quantum state has gained significant attention from researchers. Many teleportation schemes have been introduced in the recent past.
Deepak Singh +2 more
doaj +1 more source
Analysis of Decoherence in Linear and Cyclic Quantum Walks
Optics, 2021 We theoretically analyze the case of noisy Quantum walks (QWs) by introducing four qubit decoherence models into the coin degree of freedom of linear and cyclic QWs.
Mahesh N. Jayakody +2 more
doaj +1 more source