Ivády Viktor (Max Planck Institute for the Physics of Complex Systems, Dresden, Germany)

Structural defects in semiconductors as room temperature quantum devices of nature

Abstract: One of the biggest achievements of physical sciences in the last decades is the implementation of various long-lived controllable quantum systems that can be utilized in novel applications ranging from quantum computing through quantum communication to quantum sensing. All the different implementations exhibit some unique properties that provide advantages in certain applications. Quantum bits and simple quantum devices realized by structural defects in semiconductors have the ability to remain coherent and operate above room temperature. In the first part of my talk, I will shortly review the physics of these fascinating atomic scale solid state systems that can be found even in natural semiconductor samples, such as in diamond. The extraordinary properties of these devices can be derived from the underlying physics of the host material and the structural defect. This knowledge helps us today to explore the vast variety of structural defects in semiconductors to find new systems with superior properties. In the last part of my talk, I will discuss current challenges and possible solutions in the light of my most recent research activities.

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