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Quantum Simulation Using Hybrid Metal-Semiconductor Islands.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Quantum Simulation Using Hybrid Metal-Semiconductor Islands./
作者:	Pouse, Winston.
面頁冊數:	1 online resource (156 pages)
附註:	Source: Dissertations Abstracts International, Volume: 84-12, Section: B.
Contained By:	Dissertations Abstracts International84-12B.
標題:	Islands. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30462709click for full text (PQDT)
ISBN:	9798379651442

Quantum Simulation Using Hybrid Metal-Semiconductor Islands.
Pouse, Winston.

Quantum Simulation Using Hybrid Metal-Semiconductor Islands. - 1 online resource (156 pages)

Source: Dissertations Abstracts International, Volume: 84-12, Section: B.

Thesis (Ph.D.)--Stanford University, 2023.

Includes bibliographical references

Advancements in our control and understanding of quantum systems promise dramatic change in technology, potentially affecting fields of computation, sensing, and even power transmission. These grand possibilities are driven by new phenomena that emerge from strong quantum mechanical interactions between electrons in a material. One limitation to realizing these breakthroughs is that much of the exotic behavior present in quantum materials occur in conditions not suitable for practical applications, for example, very low temperatures or high pressures. Understanding why these novel properties emerge may provide insight into overcoming such limitations. One avenue to better our understanding is quantum simulation, in which a highly controllable experimental system is used to directly implement the physics of these quantum materials.In this thesis we build on a new approach to quantum simulation, using hybrid metal-semiconductor island nanostructures. The hybrid structure combines the advantages of both metal and semiconductor nanostructures - sites that behave uniformly and couplings that are highly tunable. Each island can act as a single lattice site, with electrons that may interact with other lattice sites or a surrounding bath of conduction electrons. However, before scaling to lattices where the physics of bulk materials can be replicated, a crucial step is understanding how two such islands interact with each other.To probe the inter-island interaction, we build and study a two-island device, and find that the inter-island interaction arises from a Kondo-like screening of charge states acting as a pseudospin. When each island is also coupled to a single lead via a Kondo interaction, the resulting competition leads to a quantum critical point. We find that this is well described by a double charge Kondo model, and our transport measurements well match numerical renormalization group calculations. In particular, we study how critical behavior is destroyed following a particular universal scaling form when detuning from charge degeneracy, where criticality occurs.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2023

Mode of access: World Wide Web

ISBN: 9798379651442Subjects--Topical Terms:

563444
Islands.
Index Terms--Genre/Form:

542853
Electronic books.

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