Results 271 to 280 of about 236,146 (309)
Linear Optical Realization of Qubit Purification with Quantum Amplitude Damping Channel
Chinese Physics Letters, 2007 We provide an experimental scheme which includes the realization of quantum amplitude damping channel and the optimal two-qubit purification. Moreover, we discuss the purification of arbitrary input qubits and arbitrary N qubits. Our scheme only uses linear optical elements and the proposal may be useful in transmission of photons in fibres.
Qing Lin, Jian Li, Guo Guang-Can
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Fidelity of structured amplitude-damping channels [PDF]
Physica Scripta, 2011 We study the properties of the fidelity of one-qubit operations in amplitude damping channels and reveal their properties as a function of coupling to the photonic crystal environment. We show that there is a direct connection between the information fidelity and the detuning of the atomic frequency from the photonic band gap (PBG).
Li-Quan Zhang +4 more
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Damping of displaced chaotic light field in amplitude dissipation channel*
Chinese Physics B, 2020We explore how a displaced chaotic light (DCL) behaves in an amplitude dissipation channel, and what is its time evolution formula of photon number distribution. With the use of the method of integration within ordered product product of operator (IWOP) and the new binomial theorem involving two-variable Hermite polynomials we obtain the evolution law ...
Lan-Lan Li, Ke Zhang, Hong-Yi Fan
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Mimicking an Amplitude Damping Channel for Laguerre Gaussian Modes
Frontiers in Optics 2010/Laser Science XXVI, 2010An amplitude damping channel for Laguerre-Gaussian (LG) modes is presented. Experimentally the action of the channel on LG modes is in good agreement with that predicted theoretically.
Angela Dudley +4 more
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Multipartite correlation degradation in amplitude-damping quantum channels
Journal of the Korean Physical Society, 2017Multipartite correlations, such as entanglement and non-locality, are considered when particles pass through a generalized amplitude-damping channel. Results for pure and mixed states for two qubits suggest that initial mixed states can still be considered provided that their degree of mixture is low enough.
Ahmed Farouk +3 more
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Protecting Quantum Correlation from Correlated Amplitude Damping Channel
Brazilian Journal of Physics, 2017In this work, we investigate the dynamics of quantum correlation measured by measurement-induced nonlocality (MIN) and local quantum uncertainty (LQU) in correlated amplitude damping (CAD) channel. We find that the memory parameter brings different influences on MIN and LQU.
Cai Zhang, Zhiming Huang
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Entanglement-Assisted Classical Capacity of a Generalized Amplitude Damping Channel
Chinese Physics Letters, 2007The entanglement-assisted capacity of a generalized amplitude damping channel is investigated by using the properties of partial symmetry and concavity of mutual information. The numerical and analytical results of the entanglement-assisted capacity are obtained under certain conditions.
Hou Li-Zhen, Fang Mao-Fa
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Information Geometric Solution to Additivity of Amplitude-Damping Quantum Channel
AIP Conference Proceedings, 2011The amplitude damping quantum channel has great importance in practical quantum communications, since this channel model describes energy dissipation. The additivity of the amplitude damping quantum channel model is still an open question and an exciting subject of current research.
Laszlo Gyongyosi +3 more
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Photon enhanced chaotic light and its dissipation in an amplitude damping channel
Optik, 2018Abstract In this paper, we investigate how a m -photon enhanced chaotic field (PACF), denoted by 1 − e − λ m + 1 a † m e − λ a † a a m / m !, evolves in an amplitude damping channel with a damping constant κ .
Hong-Yi Fan, Zhi-Long Wan
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QUANTUM CAPACITY REGION OF SIMULTANEOUS AMPLITUDE AND PHASE DAMPED QUBIT CHANNEL
International Journal of Quantum Information, 2012A typical channel model of the decoherence of qubit is the simultaneous amplitude and phase damping. The parameter region of the channel is classified using the degradability and anti-degradability. It is shown that there is a large parameter region with zero quantum capacity. The formula for one-shot quantum capacity is also given.
Li-Zhen Jiang, Xiao-Yu Chen
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