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Chirality

Chirality

Chirality is a term that describes the lack of mirror symmetry in an object. In other words, chiral objects cannot be superposed on their mirror images. For example, our feet are chiral, as the mirror image of the left foot, the right foot, cannot be superposed on the left foot.
Chiral objects exhibit a sense of handedness when they interact with another chiral object. For example, our left foot can only fit in the left shoe and not in the right shoe. Achiral objects — objects that have...

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Related Experiment Video

Updated: Nov 30, 2025

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Optical Multilevel Spin Bit Device Using Chiral Quantum Dots.

H Al-Bustami¹, B P Bloom², Amir Ziv¹

¹Applied Physics Department and the Center for Nano-Science and Nano-Technology, The Hebrew University of Jerusalem, Jerusalem 91904 Israel.

|November 13, 2020

Summary

This summary is machine-generated.

Researchers developed an optical multilevel spin bit using chiral quantum dots and a Hall sensor. This advancement enables denser data storage with low power consumption, achieving a nine-state readout.

Keywords:

chiral induced spin selectivity (CISS)multistate memory optical nano device spin transfer spintronics

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Area of Science:

Materials Science
Quantum Computing
Nanotechnology

Background:

Data storage technology requires continuous innovation for increased speed, density, and reduced power consumption.
Current flash memory advancements focus on increasing bits per cell for higher information density.
The chiral induced spin selectivity (CISS) effect offers potential for novel data storage mechanisms.

Purpose of the Study:

To develop a novel optical multilevel spin bit for advanced data storage applications.
To leverage the chiral induced spin selectivity (CISS) effect for high-density information storage.
To demonstrate a multi-state readout capability using nanometer-sized chiral quantum dots.

Main Methods:

Fabrication of nanometer-sized chiral quantum dots.
Integration of a double quantum dot architecture with a Nickel-based Hall sensor.
Utilizing the chiral induced spin selectivity (CISS) effect for spin manipulation and readout.

Main Results:

Successful development of an optical multilevel spin bit.
Demonstration of a nine-state readout, indicating multilevel data storage.
Achieved data storage based on the CISS effect in chiral quantum dots.

Conclusions:

The developed optical multilevel spin bit offers a promising approach for next-generation data storage.
The use of chiral quantum dots and the CISS effect enables high-density, low-power memory solutions.
This work paves the way for advanced memory technologies utilizing spin-based phenomena.