Improved Gilbert–Varshamov Bound for Entanglement-Assisted Asymmetric Quantum Error Correction by Symplectic Orthogonality

Matsumoto, Ryutaroh

doi:10.1109/tqe.2020.2978454

Cited by 2 publications

(1 citation statement)

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“…Entangled qubits are distributed between two nodes with high fidelity. Since quantum states cannot be copied or amplified, success of quantum communication over long distances strongly depends on the use of one or more quantum repeaters that forward information by entanglement distribution [3].…”

Section: Introductionmentioning

confidence: 99%

Entanglement Distribution and Quantum Teleportation in Higher Dimension over the Superposition of Causal Orders of Quantum Channels

Dey¹,

Marchetti²

2023

Preprint

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Multiple photonic degrees of freedom can be explored to generate high-dimensional quantum states; commonly referred to as 'qudits'. Qudits offer several advantages for quantum communications, including higher information capacity, noise resilience and data throughput, and lower information loss over different propagation mediums (free space, optical fibre, underwater) as compared to conventional qubits based communication system. However, qudits have been little exploited in literature, owing to their difficulty in transmission and detection. In this paper, for the first time, we develop and formulate the theoretical framework for transmission of classical information through entanglement distribution of qudits over two quantum channels in superposition of alternative causal order. For the first time we i) engineer quantum switch operation for 2-qudit systems and ii) formulate theoretical system model for entanglement distribution of qudits via quantum switch. Results show that entanglement distribution of a qudit provides a considerable gain in fidelity even with increase in noise.

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Section: Introductionmentioning

confidence: 99%