Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Communications in Theoretical Physics

Effect of Dissipative Environments on Atomic-State Quantum Teleportation

Chang-Ning Pan, Jianshu Fang, Xiang-Ping Liao, Mao-Fa Fang

Published Apr 1, 2011• 1 citation
Publisher

Abstract

In the paper, taking the atomic EPR entanglement states as quantum channel, we investigate the fidelity of quantum teleportation of atomic state in thermal environment and vacuum reservoir by means of quantum theory of damping-density operator approach, and the average fidelities are calculated, the results show that the atomic quantum channel state is more robust than in teleportation process when they are subject to the dissipative environments.

DOI
10.1088/0253-6102/55/4/09

Related papers

Fidelity of quantum teleportation of atomic-state in dissipative environment

Mao-Fa Fang, Xiaofang Peng, Xiang-Ping Liao +2 more

The atomic-state quantum teleportation in a dissipative environment is investigated by the quantum theory of damping - density operator approach and the numerical calculations. The effects of fidelity for different initial atomic-states are discussed. The results show that, when only the input atomic-state is exposed to the squeezed vacuum reservoirs, the fidelity of atomic-state with larger probability in the ground state is larger than that of other state; on the other hand, when the quantum channel is exposed to the reservoirs, the input state with equal probability in the ground state and the excited state has the largest fidelity in all the teleported states.

Acta Physica Sinica•Jan 1, 2011•2 citations

Teleportation of qubit states through dissipative channels: Conditions for surpassing the no-cloning limit

Şahin Kaya Özdemir, Karol Bartkiewicz, Yu-xi Liu +1 more

We investigate quantum teleportation through dissipative channels and calculate teleportation fidelity as a function of damping rates. It is found that the average fidelity of teleportation and the range of states to be teleported depend on the type and rate of the damping in the channel. Using the fully entangled fraction, we derive two bounds on the damping rates of the channels: one is to beat the classical limit and the second is to guarantee the nonexistence of any other copy with better fidelity. The effect of the initially distributed maximally entangled state on the process is presented; the concurrence and the fully entangled fraction of the shared states are discussed. We intend to show that prior information on the dissipative channel and the range of qubit states to be teleported is helpful for the evaluation of the success of teleportation, where success is defined as surpassing the fidelity limit imposed by the fidelity of the 1-to-2 optimal cloning machine for the specific range of qubits.

arXiv:0709.1662•Physical Review A•Oct 19, 2007•56 citations

Teleportation of Atomic States in a Vacuum-Induced Environment

Liu Jin, Shao Bin, Shao-Hua Xiang +1 more

We present a scheme for teleporting atomic state through a dissipative quantum channel induced by spontaneous emission and investigate the destructive effect of the atomic decay on the success probability and the fidelity of teleportation associated to different channels. It is found that there exists an optimal channel to realize faithful teleportation.

Communications in Theoretical Physics•Jan 1, 2009•3 citations

Enhancement of fidelity of quantum teleportation in a non-Markovian environment

Yanliang Zhangy, Xingqi Wu

We investigate quantum teleportation of a single unknown qubit state for the dissipative situation in which both qubits of the entangled channels that are formed by the pure and mixed maximally entangled states are subjected to local structured reservoirs. We consider the dissipative factors in Markovian and non-Markovian regimes on the average fidelity of the teleportation by solving the quantum master equation. It is shown that the fidelity of teleportation decreases exponentially over time in Markovian environments and attenuates oscillatorily in non-Markovian ones. In addition, when the non-Markovian and detuning conditions are satisfied simultaneously, the fidelity increases as the detuning increases. Even with a lower purity of entanglement, fidelity can be preserved effectively at comparatively high levels.

CRC Press eBooks•Sep 25, 2019•0 citations

Effects of Markovian and Non-Markovian Environments on Quantum Teleportation

Liang-Ming He, Nong Wang

We investigate the fidelity and the linear entropy of teleportation using a shared two qubit initially maximally entangled state as a quantum channel, in which one qubit interacts with a two-state system named as the probe particle in a reservoir by dispersive atom-field coupling. Without the coupling of the probe particle with the reservoir, the quantum channel state is a pure state but not an initially maximally entangled state under the influence of the probe particle, and thus Bob obtains a pure state with an average fidelity fluctuating between 2/3 and 1 with time t. In the cases of the probe particle coupling with the reservoir the Markovian and non-Markovian dynamics of such a quantum channel are discussed in detail to show the influence of the reservoir on teleportation. The quantum channel state is a mixed state, but its entanglement does not die under the influence of the reservoir. It is found that, for a given teleported state, the fidelity and the linear entropy both evolve asymptotically to their fixed values, respectively, which are relative to the decay rate γ (Markovian) or to the pseudomode decay rate Γ (non-Markovian). Furthermore, when time t ≫ γ^(-1) and t ≫ Γ^(-1), the average fidelity increases with the augments of γ and Γ, while it decreases with the aggrandizement of the dispersive interaction strength κ.

Chinese Journal of Physics•Jun 1, 2015•0 citations

The efficiency of quantum teleportation with three-qubit entangled state in a noisy environment

Chang-Yue Zhang, Zhu‐Jun Zheng, Zhao-Bing Fan +1 more

Quantum teleportation plays a significant role in the field of quantum communication. This paper investigates quantum teleportation through a noisy environment by using GHZ state and non-standard W state as quantum channels. We analyze the efficiency of quantum teleportation by solving analytically a master equation in Lindblad form. Following the quantum teleportation protocol, we obtain the fidelity of quantum teleportation as a function of evolution time. The calculation results show that the teleportation fidelity using non-standard W is higher in comparison to GHZ state at the same evolution time. Moreover, we consider the efficiency of teleportation with weak measurements and reverse quantum measurement under amplitude damping noise. Our analysis suggests that the teleportation fidelity using non-standard W is also more robust to noise than GHZ state in the same conditions. Interestingly, we found that weak measurement and its reverse operation have no positive effect on the efficiency of quantum teleportation by using GHZ and non-standard W state in the amplitude damping noise environment. In addition, we also demonstrate the efficiency of quantum teleportation can be improved by making minor modifications to the protocol.

Scientific Reports•Mar 7, 2023•17 citations
In the paper, taking the atomic EPR entanglement states as quantum channel, we investigate the fidelity of quantum teleportation of atomic state in thermal environment and vacuum reservoir by means of quantum theory of damping-density operator approach, and the average fidelities are calculated, the results show that the atomic quantum channel state is more robust than in teleportation process when they are subject to the dissipative environments.
The atomic-state quantum teleportation in a dissipative environment is investigated by the quantum theory of damping - density operator approach and the numerical calculations. The effects of fidelity for different initial atomic-states are discussed. The results show that, when only the input atomic-state is exposed to the squeezed vacuum reservoirs, the fidelity of atomic-state with larger probability in the ground state is larger than that of other state; on the other hand, when the quantum channel is exposed to the reservoirs, the input state with equal probability in the ground state and the excited state has the largest fidelity in all the teleported states.
We investigate quantum teleportation through dissipative channels and calculate teleportation fidelity as a function of damping rates. It is found that the average fidelity of teleportation and the range of states to be teleported depend on the type and rate of the damping in the channel. Using the fully entangled fraction, we derive two bounds on the damping rates of the channels: one is to beat the classical limit and the second is to guarantee the nonexistence of any other copy with better fidelity. The effect of the initially distributed maximally entangled state on the process is presented; the concurrence and the fully entangled fraction of the shared states are discussed. We intend to show that prior information on the dissipative channel and the range of qubit states to be teleported is helpful for the evaluation of the success of teleportation, where success is defined as surpassing the fidelity limit imposed by the fidelity of the 1-to-2 optimal cloning machine for the specific range of qubits.
We investigate quantum teleportation of a single unknown qubit state for the dissipative situation in which both qubits of the entangled channels that are formed by the pure and mixed maximally entangled states are subjected to local structured reservoirs. We consider the dissipative factors in Markovian and non-Markovian regimes on the average fidelity of the teleportation by solving the quantum master equation. It is shown that the fidelity of teleportation decreases exponentially over time in Markovian environments and attenuates oscillatorily in non-Markovian ones. In addition, when the non-Markovian and detuning conditions are satisfied simultaneously, the fidelity increases as the detuning increases. Even with a lower purity of entanglement, fidelity can be preserved effectively at comparatively high levels.
We investigate the fidelity and the linear entropy of teleportation using a shared two qubit initially maximally entangled state as a quantum channel, in which one qubit interacts with a two-state system named as the probe particle in a reservoir by dispersive atom-field coupling. Without the coupling of the probe particle with the reservoir, the quantum channel state is a pure state but not an initially maximally entangled state under the influence of the probe particle, and thus Bob obtains a pure state with an average fidelity fluctuating between 2/3 and 1 with time t. In the cases of the probe particle coupling with the reservoir the Markovian and non-Markovian dynamics of such a quantum channel are discussed in detail to show the influence of the reservoir on teleportation. The quantum channel state is a mixed state, but its entanglement does not die under the influence of the reservoir. It is found that, for a given teleported state, the fidelity and the linear entropy both evolve asymptotically to their fixed values, respectively, which are relative to the decay rate γ (Markovian) or to the pseudomode decay rate Γ (non-Markovian). Furthermore, when time t ≫ γ^(-1) and t ≫ Γ^(-1), the average fidelity increases with the augments of γ and Γ, while it decreases with the aggrandizement of the dispersive interaction strength κ.
Quantum teleportation plays a significant role in the field of quantum communication. This paper investigates quantum teleportation through a noisy environment by using GHZ state and non-standard W state as quantum channels. We analyze the efficiency of quantum teleportation by solving analytically a master equation in Lindblad form. Following the quantum teleportation protocol, we obtain the fidelity of quantum teleportation as a function of evolution time. The calculation results show that the teleportation fidelity using non-standard W is higher in comparison to GHZ state at the same evolution time. Moreover, we consider the efficiency of teleportation with weak measurements and reverse quantum measurement under amplitude damping noise. Our analysis suggests that the teleportation fidelity using non-standard W is also more robust to noise than GHZ state in the same conditions. Interestingly, we found that weak measurement and its reverse operation have no positive effect on the efficiency of quantum teleportation by using GHZ and non-standard W state in the amplitude damping noise environment. In addition, we also demonstrate the efficiency of quantum teleportation can be improved by making minor modifications to the protocol.