Speaker
Description
In the quantum computation era, the need of controlling the coherence lifetime of open quantum systems has increased considerably, making decoherence a critical topic. Quantum Darwinism (QD), a concept popularized by W. Zurek [1], can be viewed as a special case of decoherence with unique characteristics and can shed some light on the quantum-to-classical transition. In this scenario, nearly all classical information available about a system is spread redundantly in
small fragments of a reservoir-like environment. However, although one can find experiments reporting direct tests of QD [2-4], it is still a challenge to make experimental realizations in more realistic setups. To address this, we studied different scenarios of a model where the system-environment interaction happens via quantum scattering subject to a potential with the Fermi-Huang pseudo-potential [5,6] form. In this talk I will briefly introduce the main concepts, and present the results we could reach and how they could help make more realistic experimental
setups feasible.
References
[1] Zurek, Wojciech, Nature physics 5.3 (2009)
[2] M. A. Ciampini, G. Pinna, P. Mataloni, and M. Paternostro, Phys. Rev. A 98, 020101(2018).
[3] M.-C. Chen, H.-S. Zhong, Y. Li, D. Wu, X.-L. Wang, L. Li, N.-L. Liu, C.-Y. Lu, and J.-W.Pan, Sci. Bull. 64, 580 (2019).
[4] T. Unden, D. Louzon, M. Zwolak, W. H. Zurek, and F. Jelezko, Phys. Rev. Lett. 123,140402 (2019).
[5] E. Fermi, Ricerca Sci. 7, 13 (1936).
[6] K. Huang and C. N. Yang, Phys. Rev. 105, 767 (1957).
