# Measurement enhances long-distance Entanglement generation in spin   chains with dissipative processes

**Authors:** Morteza Rafiee

arXiv: 1706.01141 · 2018-09-26

## TL;DR

This study demonstrates that regular global measurements on noisy spin chains can significantly enhance long-distance entanglement generation, effectively mitigating dephasing and dissipation effects in quantum communication channels.

## Contribution

It introduces a measurement-based scheme to improve entanglement in noisy spin chains, extending prior methods to account for thermal effects and dissipation.

## Key findings

- Enhanced entanglement achieved with measurement scheme
- Effective suppression of dephasing and dissipation effects
- Applicable to non-zero temperature quantum channels

## Abstract

In this paper, effects of the regular measurements on a noisy channel has been investigated. The strategy introduced by A. Bayat, and Y. Omar [New J. Phys. 17, 103041 (2015)] is followed to suppress dephasing and dissipation effects in a noisy spin channel and generate long distance entanglement by global measurement on the channel. A regular global measurements performed on spin channel weakly coupled to the sender and receiver qubits via $XX$ interaction. This scheme is applied for the dephasing and dissipation in non-zero temperature processes separately and the results show that amounts of achieved entanglement enhanced rather than the no-measurement approach.

## Full text

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## Figures

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## References

57 references — full list in the complete paper: https://tomesphere.com/paper/1706.01141/full.md

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Source: https://tomesphere.com/paper/1706.01141