# Applications of Atomic Ensembles for Photonic Quantum Information Processing and Fundamental Tests Rydberg quantum simulator of topological insulators.

20 Jan 2021 Finally, we offer an outlook of MTI heterostructures-based spintronics applications, particularly in view of their feasibility to achieve room-

Se hela listan på scholarpedia.org 2021-04-12 · Two-and-a-half years ago, Charles Kane and Eugene Mele received the 2019 Breakthrough Prize in Fundamental Physics.The award recognized their theories that predicted the existence of topological insulators, a new class of material with the unique property of being an electrical insulator on the inside and having a surface that conducts electricity. face states of a 3D topological insulator do strongly resemble the edge states of a 2D topological insulator. As in the 2D case, the direction of electron motion along the surface of a 3D topological insulator is deter-mined by the spin direction, which now varies continu-ously as a function of propagation direction (figure 1d). The easiest way to describe a topological insulator is as an insulator that always has a metallic boundary when placed next to a vacuum or an ‘ordinary’ insulator. These metallic boundaries originate from topological invariants, which cannot change as long as a material remains insulating. The unique applicability of topological insulators to spintronic devices comes from the fact that the conducting electrons on the surface have no mass and are automatically “spin polarized,” leading to the unique half-integer quantum Hall effect that was observed in this research. Topological Insulators: Electronic structure, material systems and its applications Parijat Sengupta Network for Computational Nanotechnology First Published: 08 January 2021 Topological insulators are materials that are electrically insulating in the bulk but can conduct electricity due to topologically protected electronic edge or surface states.

The topological invariants of an interacting insulator can be calculated from Green’s function at zero-frequency. Nonzero frequencies can be safely ignored. (Wang&Zhang PRX, 2, 031008) This is a general framework instead of a single formula. It is applicable to many different topological insulators and superconductors.

In recent years, the research field of topological insulators (TIs) has grown extremely fast due to its potential to produce revolutionary applications in electronics, Postdoc position (f/m/d) in topological-insulator circuit Quantum We also expressly welcome applications from people with disabilities Linnaeus Physics Colloquium: Topological quantum matter band structure for a thin film of the three-dimensional topological insulator Bi2Se3. for applications in low-energy electronic devices and nanospintronics.

## The Property, Preparation and Application of Topological Insulators: A Review. Topological insulator (TI), a promising quantum and semiconductor material, has gapless surface state and narrow bulk band gap. Firstly, the properties, classifications and compounds of TI are introduced.

Elektroniska egenskaper och material; Teoretisk fysik; En rättelse till Electrical insulators in the bulk, these materials have surface states that conduct electrons extremely well. In this video, Zahid Hasan of Princeton University in the US describes why topological insulators could lead to high-performance electronics and applications in quantum computing.

### The most promising applications of topological insulators are spintronic devices and dissipationless transistors for quantum computers based on the quantum Hall effect [13] and quantum anomalous Hall effect. [51] In addition, topological insulator materials have also found practical applications in advanced magnetoelectronic and optoelectronic

p-type Bi 2 Se 3 for topological insulator and low-temperature thermoelectric applications. Physical Review B 79 , 195208 (2009). ADS Article Google Scholar topological insulator is a quantum spin Hall insulator, which is a close cousin of the integer quantum Hall state.

They are characterized by having bulk electronic states like that of a standard band gap insulator but with spin-momentum locked conduction channels only at the surface of the material. Topological insulators are a game-changing class of materials; charged particles can flow freely on their edges and route themselves around defects, but can't pass through their interiors. This
Pascal SIMON, University Paris Sud, Orsay pascal.simon@u-psud.fr Chiral edge states in topological insulators and superconductors Chiral modes in optics and electronics of 2D systems ‐Aussois 26‐28/11/18
topological insulators subject to time-reversal symmetry breaking are discussed. In section 5, we review several methods of plasmon excitation. In section 6, we draw attention to some open questions and the future applications of plasmonics in topological insulators.

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Many applications of topological insulators (TIs) as well as new phenomena require devices with reduced dimensions. quantum spin Hall system. I will conclude by giving a conceptual description of topological insulators and mention some potential applications of such states. Uppsatser om TOPOLOGICAL INSULATORS.

Topology currently revolutionizes our understanding of electronic properties in crystals with 3D topological insulators representing the most established class. Nevertheless, the materials with such properties still have to be optimized prior to applications. As a new class of quantum matter, topological insulators with insulating bulk and conducting surface states have attracted attention in more and more research fields other than condensed matter physics due to their intrinsic physical properties, which provides an excellent basis for novel nanoelectronic, optoelectronic, and spintronic device applications. electronic phases is the 3D topological insulator.

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### 2017-10-18 · Hor, Y. S. et al. p-type Bi 2 Se 3 for topological insulator and low-temperature thermoelectric applications. Physical Review B 79 , 195208 (2009). ADS Article Google Scholar

Instead, it concerns the wavefunctions of the electrons flowing in the material. These contain what is in effect a knot, making it impossible to smoothly convert a topological insulator into a normal insulator. Whereas electrons usually have a mass, in the case of topological insulators the conducting electrons on the surface have no mass and are automatically "spin polarized," leading to the unique half-integer quantum Hall effect observed and also making the material promising for various potential applications. 2020-08-10 2012-05-14 2020-09-23 Topological Insulator Cell for Memory and Magnetic Sensor Applications Takashi Fujita 1, Mansoor Bin Abdul Jalil;2, and Seng Ghee Tan 3 1Computational Nanoelectronics and Nano-device Laboratory, Electrical and Computer Engineering Department, National University of Singapore, 4 Engineering Drive 3, Singapore 117576 The three-dimensional topological insulator is a quantum state of matter characterized by an insulating bulk state and gapless Dirac cone surface states.

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### Due to the nature of graphene-like surface state, topological insulators (TIs) was used for pulsing the laser since 2012. To date, TIs have been realized to be a promising modulator not only for

Gerhard Klimeck . topological insulators may provide new routes to generating novel phases and particles, possibly finding uses in technological applications in spintronics and quantum computing.

## Applications of Atomic Ensembles for Photonic Quantum Information Processing and Fundamental Tests Rydberg quantum simulator of topological insulators.

The helicity-dependent photocurrents in such devices are underpinned by spin momentum-locking of surface Dirac The main part of the book discusses realistic models for both time-reversal-preserving and -violating topological insulators, as well as their characteristic responses to external perturbations. Special emphasis is given to the study of the anomalous electric, thermal, and thermoelectric transport properties, the theory of orbital magnetisation, and the polar Kerr effect.

Magnetically doped TIs are ferromagnetic up to 13 K,3 well below any practical operating condition. Here we demonstrate that the long-range ferromagnetism at ambient temperature can be induced in Bi2–xMnxTe3 by the magnetic proximity effect 2020-03-19 2017-11-28 Our demonstration of room-temperature topological order and non-trivial spin-texture in stoichiometric Bi(2)Se(3).M(x) (M(x) indicates surface doping or gating control) paves the way for future graphene-like studies of topological insulators, and applications of the observed spin-polarized edge channels in spintronic and computing technologies possibly at room temperature. 9. Title: pdf Author: Henrik Johannesson Created Date: 9/17/2014 5:03:18 PM Pascal SIMON, University Paris Sud, Orsay pascal.simon@u-psud.fr Chiral edge states in topological insulators and superconductors Chiral modes in optics and electronics of … This book serves as a brief introduction to topological insulator physics and device applications. Particular attention is paid to the indirect exchange interaction mediated by near surface Dirac fermions and the spin texture this interaction favors. Surface states and topological invariants in three-dimensional topological insulators: Application to Bi 1−xSb x Jeffrey C. Y. Teo, Liang Fu, and C. L. Kane Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA Received 16 April 2008; revised manuscript received 18 May 2008; published 23 July 2008 “This is a really exciting development for the field because it is the first promising indication that we actually may be able to build a practical technology with these topological insulator materials, which many condensed-matter physicists have been studying with spintronics applications as the motivation,” said co-principal-investigator Nitin Samarth, a professor of physics and the Thus, exploring the visible-range plasmonic response of topological insulators is significant to reveal their optical characteristics and broaden their applications at high frequencies. Herein, we report the experimental demonstration of a visible-range surface plasmon resonance (SPR) effect on an antimony telluride (Sb 2 Te 3 ) topological insulator film.