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Related Experiment Video

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Generation and Coherent Control of Pulsed Quantum Frequency Combs

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

Determination of the transmission coefficients for quantum structures using FDTD method.

Yangyang Peng¹, Xiaoying Wang, Wenquan Sui

¹Zhejiang California International Nanosystems Institute, Zhejiang University, Hangzhou 310000, China.

Journal of Nanoscience and Nanotechnology

|March 14, 2012

Summary

A new FDTD-S method accurately simulates quantum effects in electronic devices. This approach enables co-simulation of hybrid systems containing quantum structures and traditional components for better design.

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Area of Science:

Computational physics
Quantum electronics
Semiconductor device simulation

Background:

Traditional Finite-Difference Time-Domain (FDTD) simulators lack the capability to incorporate quantum mechanical effects.
Simulating hybrid systems with both quantum and classical components requires advanced numerical techniques.
Accurate modeling of quantum phenomena like tunneling is crucial for novel device development.

Purpose of the Study:

To develop a straightforward method for integrating quantum effects into conventional FDTD simulators.
To enable co-simulation of systems comprising quantum structures alongside traditional electronic components.
To introduce the FDTD-S method for calculating quantum tunneling transmission coefficients.

Main Methods:

Solving the time-domain Schrödinger equation using a novel Finite-Difference Time-Domain technique (FDTD-S).
Simulating a resonant tunneling diode (RTD) structure to validate the FDTD-S method.
Comparing numerical results obtained from FDTD-S with analytical solutions.

Main Results:

The FDTD-S method successfully calculated the tunneling transmission coefficient.
Simulations of a resonant tunneling diode (RTD) demonstrated the method's feasibility.
Excellent agreement was observed between the FDTD-S numerical results and analytical data.

Conclusions:

The FDTD-S method provides an effective and accurate approach for incorporating quantum effects.
This technique facilitates the analysis and design of hybrid systems integrating quantum and traditional components.
The FDTD-S method represents a significant advancement for simulating complex quantum-classical electronic devices.