Preserving the Quantumness of Open Quantum Systems

Göktuğ Karpat

Sao Paulo State University (UNESP)

Özet: Quantum theory is undoubtedly a cornerstone of modern physics and one of the pillars of all natural sciences. Even though it is a century old, some of its counter intuitive features have been started to be exploited on a fundamental level, only for the last two decades, with the emergence of the quantum information science and quantum computation theory. Quantum algorithms and quantum communication protocol can offer tremendous advantage over their corresponding classical counter parts. However, quantum systems are extremely fragile in real world conditions as they tend to rapidly lose their characteristic features and become classical by uncontrollably interacting with their environment . Thus, a major challenge for the practical implementation of quantum protocols and algorithms is the development of reliable methods to retaliate or avoid the destructive effects of this system-environment interaction.

In this talk, we intend to briefly elaborate on our contributions in the literature regarding the development of new techniques to protect precious quantum mechanical features such as coherence, entanglement or more general quantum correlations, which serve as a resource for the quantum communication protocols and quantum algorithms. In particular, to this aim, we shall discuss the significance of decoherence-free subspaces, and non-Markovian memory effects emerging throughout the interaction between the open system and its environment.

Yer : MSGSÜ Bomonti Binası, Fizik Bölümü
Tarih : 9 Mart 2017 Perşembe, 15:00