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Two-Qubits in a Large-S Environment ^{ †}

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## Abstract

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## 1. Introduction

## 2. The Model and Its Entanglement Properties

## 3. Discussion

## Acknowledgments

## References

- Lewenstein, M.; Bruß, D.; Cirac, J.I.; Kraus, B.; Kuś, M.; Samsonowicz, J.; Sanpera, A.; Tarrach, R. Separability and distillability in composite quantum systems—A primer. J. Mod. Opt.
**2000**, 47, 2481–2499. [Google Scholar] - Lieb, E.H. The classical limit of quantum spin systems. Commun. Math. Phys.
**1973**, 31, 327–340. [Google Scholar] [CrossRef] - Wootters, W.K. Entanglement of formation of an arbitrary state of two qubits. Phys. Rev. Lett.
**1998**, 80, 2245–2248. [Google Scholar] [CrossRef] - Coffman, V.; Kundu, J.; Wootters, W.K. Distributed entanglement. Phys. Rev. A
**2000**, 61, 052306. [Google Scholar] [CrossRef] - Foti, C.; Cuccoli, A.; Verrucchi, P. Quantum dynamics of a macroscopic magnet operating as an environment of a mechanical oscillator. Phys. Rev. A
**2016**, 94, 062127. [Google Scholar] [CrossRef]

**Figure 1.**${C}_{{Q}_{1}{Q}_{2}}$ as a function of S. In the inset $|{C}_{{Q}_{1}{Q}_{2}}^{2}-{\tau}_{{Q}_{1}}|$ as a function of S. Each line correspond to a specific choice of ${x}_{max}$ and ${y}_{max}$ (see text).

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**MDPI and ACS Style**

Fiorelli, E.; Cuccoli, A.; Verrucchi, P.
Two-Qubits in a Large-*S* Environment . *Proceedings* **2019**, *12*, 10.
https://doi.org/10.3390/proceedings2019012010

**AMA Style**

Fiorelli E, Cuccoli A, Verrucchi P.
Two-Qubits in a Large-*S* Environment . *Proceedings*. 2019; 12(1):10.
https://doi.org/10.3390/proceedings2019012010

**Chicago/Turabian Style**

Fiorelli, Eliana, Alessandro Cuccoli, and Paola Verrucchi.
2019. "Two-Qubits in a Large-*S* Environment " *Proceedings* 12, no. 1: 10.
https://doi.org/10.3390/proceedings2019012010