Joint remote state preparation in multi-hop network under noisy environment

Self Cite

Joint remote state preparation （JRSP for short）can increase the security of quantum communication by distributing different parts of classical information to different senders. However, the communication efﬁciency in terms of ﬁdelity decreases with the increase of intermediate nodes in multi-hop network. In this paper, we try to explore methods to improve ﬁdelity of JRSP in multi-hop network presented by Zhang and Chen in 2023 Phys. Scr. 98 065107. Speciﬁcally, correlated Pauli noise with partial memory was introduced into the the shared channel. We ﬁnd that the ﬁdelity increases with the increase of memory parameters, which compensates for the loss of ﬁdelity caused by the increase of network nodes.

“…In this section, we will exhibit the general formulas of the output state and fidelity in the JRSP in multi-hop network [55], which is subjected to the correlated Pauli noise.…”

Section: General Results Of Multi-hop Jrsp Under the Pauli Channels W...mentioning

confidence: 99%

“…In this subsection, we review the JRSP scheme in multi-hop network proposed by the first author and Chen in [55].…”

Section: Jrsp In Multi-hop Networkmentioning

confidence: 99%

Section: Bit-flip Channel With Memorymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Correlated noise enhances performance of joint remote state preparation in quantum multi-hop network

Zhang,

Shen

et al. 2024

Self Cite

Enhancing hierarchical remote preparation of an arbitrary n-qudit equatorial state by weak measurement and measurement reversal

Yan,

Ma,

Jin

2024

Based on the demand for safer and more efficient quantum network communication, we propose two deterministic protocols to achieve the remote preparation of an arbitrary n-qudit equatorial states among multiple agents by selecting appropriate entanglement resources. The level of the agents varies depending on their authorities to restore the secret state. The superior agent requires the cooperation of the residual superior agents and any one of the subordinate agents, while the subordinate agent needs the help of all the other agents. To be emphasized, the recovery operations are deduced by general formulas that distinctly elucidate their relevance with the measurement outcomes. Additionally, we discuss the impact of amplitude damping noise and utilize weak measurement and measurement reversal to suppress noise.

Quantum information splitting among N-quantum nodes within a quantum network by using Bell states

Verma

2024

In quantum information processing, it is essential to ensure the security of quantum information so that it cannot be stolen and interrupted by an eavesdropper. For ensuring the security of information, quantum information splitting (QIS) method is used in which quantum communication is made more secure by splitting the quantum information among the various quantum nodes within a quantum network in such a way that any one node can retrieve the quantum information completely with the collaboration of remaining quantum nodes. In this paper, by using Bell states as the quantum channel we present a simple and precise scheme for quantum information splitting of an arbitrary single-qubit quantum information state among N (N ≥ 2) recipient nodes which are separately entangled with the sender node only and not with one another. We also generalize our scheme to the splitting of multi-qubit quantum information state among the N recipient nodes by using 2-qubit Bell states as the quantum resource. In comparison to the previous existing QIS schemes which require multi-qubit entangled states as the quantum resource, our proposed QIS scheme is very simple and feasible.