The Quantum Dense Coding in a Two Atomic System Under the Non-Markovian Environment

Zhao, Xiao; Li, Yongqiang; Cheng, Liu-Yong; Gao, Yang

doi:10.1007/s10773-018-3949-2

Cited by 12 publications

(5 citation statements)

References 23 publications

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“…Thus, dense coding capacity is maximum (χ = 2) for entangled state, mixed state and MNMS. When we compare our results with [70], it is observed that the dense coding capacity for these states is less than 2. Also, the estimated optimal time for our mixed state τ o ≈ 1.12s at spontaneous decay rate Γ ≈ 0.5Hz.…”

Section: Maximally Entangled Mixed State (Mems)mentioning

confidence: 84%

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Superdense coding for V-shaped channel and cylindrical geometry

Tayyab,

Javed,

Shaukat

2023

Phys. Scr.

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We have examined the possibility of quantum dense coding for the V-shaped channel and cylin- drical geometry of plasmonic waveguides by assuming certain initial states at different dipole-dipole distances. It is found that the dense coding capacity initially decreases and then gradually increases until it becomes steady (χ = 1) at later time. We also revealed the optimal time valid for super- dense coding regarding each initial state. It is worth noting that dense coding capacity is valid for all other states for a time less than optimal time (t < τo) except for pure state. The estimated optimal time for a V-shaped channel is prominent due to greater β-factor accomplishing it as a prosperous geometry for superdense coding. The greater optimal time for V-shaped channel entitles this geometry a benchmark for the practical applications of quantum information technology.

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Section: Maximally Entangled Mixed State (Mems)mentioning

confidence: 84%

“…Also, the estimated optimal time for our mixed state τ o ≈ 1.12s at spontaneous decay rate Γ ≈ 0.5Hz. While in [70] the time for general X-states is τ o ≈ 1s for spontaneous decay rate Γ ≈ 0.5Hz.…”

Section: Maximally Entangled Mixed State (Mems)mentioning

confidence: 99%

Superdense coding for V-shaped channel and cylindrical geometry

Tayyab,

Javed,

Shaukat

2023

Phys. Scr.

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“…In the literature, several studies have both theoretically proposed and experimentally demonstrated the concept of dense coding (see, e.g., [9][10][11][12][13][14][15][16][17] and references quoted therein). Interestingly, different methods have been presented to protect the quantum advantages of dense coding under decoherence for a relatively long time [18][19][20][21][22][23], such as choosing the proper initial channel state [24,25], employing different configurations for the external noise [26,27], and applying the quantum weak measurement (QWM) operation [28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Quantum dense coding with gravitational cat states

Haddadi,

Ghominejad,

Czerwinski

2024

Commun. Theor. Phys.

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A protocol of quantum dense coding with gravitational cat states is proposed. We explore the effects of temperature and system parameters on the dense coding capacity and provide an efficient strategy to preserve the quantum advantage of dense coding for these states. Our results might open new opportunities for secure communication and possibly insights into the fundamental nature of gravity in the context of quantum information processing.

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“…Quantum communication is also because of the quantum entanglement effect, and the communication process can be more stable and secure when the communicating parties carry out information transmission, which is also the difference between quantum communication and classical communication. The quantum entanglement effect can make the quantum communication process more stable, so the quantum entanglement is widely used in quantum communication, such as quantum key distribution, [1][2][3] quantum dense coding, [4,5] quantum teleportation, [6][7][8] and so on.…”

Section: Introductionmentioning

confidence: 99%

Experimental realization of quantum controlled teleportation of arbitrary two-qubit state via a five-qubit entangled state

Liu¹,

Li²,

Zheng³

et al. 2022

Chinese Phys. B

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Quantum controlled teleportation is the transmission of the quantum state under the supervision of a third party. This paper presents a theoretical and experimental combination of an arbitrary two-qubit quantum controlled teleportation scheme. In the scheme, the sender Alice only needs to perform two Bell state measurements, and the receiver Bob can perform the appropriate unitary operation to reconstruct arbitrary two-qubit states under the control of the supervisor Charlie. We verified the operation process of the scheme on the IBM Quantum Experience platform and further checked the accuracy of the transmitted quantum state by performing quantum state tomography. Meanwhile, good fidelity is obtained by calculating the theoretical density matrix and the experimental density matrix. We also introduced a sequence of photonic states to analyze the possible intercept-replace-resend, intercept-measure-resend, and entanglement-measure-resend attacks on this scheme. The results proved that our scheme is highly secure.

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The Quantum Dense Coding in a Two Atomic System Under the Non-Markovian Environment

Cited by 12 publications

References 23 publications

Superdense coding for V-shaped channel and cylindrical geometry

Superdense coding for V-shaped channel and cylindrical geometry

Quantum dense coding with gravitational cat states

Experimental realization of quantum controlled teleportation of arbitrary two-qubit state via a five-qubit entangled state

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