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Experimental Investigation of Secondary Flow Structures Downstream of a Model Type IV Stent Failure in a 180° Curved Artery Test Section
Published on: July 19, 2016
Quantum transport and spin dynamics on shearless tori.
1Department of Applied Physics, Graduate School of Engineering, Osaka City University, Osaka 558-8585, Japan. kudo.kazue@ocha.ac.jp
Summary
Shearless tori, found in classical dynamics, enable non-dispersive quantum wave packet transmission for quantum information applications. A driven Harper model enhances these structures for efficient quantum state transfer.
Area of Science:
- Quantum dynamics
- Classical mechanics
- Quantum information science
Background:
- Shearless tori are unique classical phase-space structures crucial for tokamak dynamics.
- These structures have potential applications in quantum information processing.
- The Heisenberg ferromagnetic spin chain with an oscillating magnetic field can be mapped to the Harper map.
Purpose of the Study:
- To investigate quantum dynamics in regions with shearless tori.
- To explore the use of shearless tori for quantum information applications, specifically non-dispersive wave packet transmission.
- To analyze a driven Harper model for enhanced quantum state transfer.
Main Methods:
- Analysis of quantum dynamics in phase-space regions containing shearless tori.
- Reduction of a quantum many-body system (Heisenberg spin chain) to a classical one-body system (Harper map).
- Investigation of a sinusoidal time-driven variant (driven Harper model) to create suitable shearless tori.
Main Results:
- Shearless tori permit the non-dispersive transmission of localized quantum wave packets.
- The driven Harper model generates shearless tori that are particularly effective for quantum state transfer.
- The behavior of concurrence was studied as a metric for quantum information transfer.
Conclusions:
- The properties of shearless tori can be leveraged for quantum information applications.
- The driven Harper model offers a promising platform for efficient quantum state transfer.
- This research bridges classical and quantum dynamics for novel technological advancements.
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