Results 51 to 60 of about 163,214 (312)
Effects of quantum noises on χ state-based quantum steganography protocol
Mathematical Biosciences and Engineering, 2019 Since the good application of quantum mechanism in the field of communication, quantum secure communication has become a research hotspot. The existing quantum secure communication protocols usually assume that the quantum channel is noise-free.
Zhiguo Qu +4 more
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Hidden nonmacrorealism: Reviving the Leggett-Garg inequality with stochastic operations
Physical Review Research, 2021 The Leggett-Garg inequality (LGI) distinguishes nonmacrorealistic channels from macrorealistic ones by constraining the experimental outcomes of the underlying system. In this work, we propose a class of channels which, initially, cannot violate the LGI (
Huan-Yu Ku +7 more
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Multiparameter Estimation with Two-Qubit Probes in Noisy Channels
Entropy, 2023 This work compares the performance of single- and two-qubit probes for estimating several phase rotations simultaneously under the action of different noisy channels.
Lorcán O. Conlon +2 more
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Bipartite quantum channels using multipartite cluster-type entangled coherent states [PDF]
, 2010 We propose a particular encoding for bipartite entangled states derived from multipartite cluster-type entangled coherent states (CTECSs). We investigate the effects of amplitude damping on the entanglement content of this bipartite state, as well as its
A. Vidiella-Barranco +8 more
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Cejing jishu, 2023 In the process of oil drilling, the acquisition and real-time transmission of downhole information is very important for the accurate evaluation of formation, reservoir description and development.
WANG Senliang +5 more
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The Holevo capacity of a generalized amplitude-damping channel
Chinese Physics, 2007 The Holevo capacity of a generalized amplitude-damping channel is investigated by using a numerical method. It is shown that the Holevo capacity depends on the channel parameters representing the ambient temperature and fidelity. In particular, under a special condition, the Holevo capacity of the generalized amplitude-damping channel can be written as
Hou Li-Zhen, Fang Mao-Fa
openaire +2 more sources
Quantum Fisher and Skew information for Unruh accelerated Dirac qubit [PDF]
, 2015 We develop a Bloch vector representation of Unruh channel for a Dirac field mode. This is used to provide a unified, analytical treatment of quantum Fisher and Skew information for a qubit subjected to the Unruh channel, both in its pure form as well as ...
Alok, Ashutosh Kumar +2 more
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Entanglement properties of optical coherent states under amplitude damping [PDF]
, 2010 Through concurrence, we characterize the entanglement properties of optical coherent-state qubits subject to an amplitude damping channel. We investigate the distillation capabilities of known error correcting codes and obtain upper bounds on the ...
C. H. Bennett +6 more
core +3 more sources
IEEE Access, 2019 In this paper, a novel protocol for asymmetric bidirectional controlled quantum teleportation (ABCQT) by using the nine-qubit entangled state as a quantum channel is proposed.
Ri-Gui Zhou +4 more
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Quantum speedup in noninertial frames
European Physical Journal C: Particles and Fields, 2020 We investigate the speedup evolution of the system under the influence of the Unruh effect, where one of the observers (e.g., Bob) is uniformly accelerated.
Kai Xu +4 more
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