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Related Experiment Video

Updated: Jun 25, 2026

Lensless On-chip Imaging of Cells Provides a New Tool for High-throughput Cell-Biology and Medical Diagnostics

Lensless On-chip Imaging of Cells Provides a New Tool for High-throughput Cell-Biology and Medical Diagnostics

Published on: December 15, 2009

A Semiconductor-Based Photonic Memory Cell.

Zimmermann¹, Wixforth, Kotthaus

¹Sektion Physik and Center for Nanoscience, Ludwig-Maximilians-Universität, Geschwister-Scholl-Platz 1, D-80539 München, Germany. Walter-Schottky-Institut, Technische Universität München, Am Coulombwall, D-85748 Garching, Germany.

Science (New York, N.Y.)

|February 26, 1999

Summary

This summary is machine-generated.

Researchers developed a semiconductor memory cell that stores photonic signals. This breakthrough extends photon storage time by over 10,000 times their natural lifetime, enabling new optical computing possibilities.

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Last Updated: Jun 25, 2026

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Gradient Echo Quantum Memory in Warm Atomic Vapor

Gradient Echo Quantum Memory in Warm Atomic Vapor

Published on: November 12, 2013

Area of Science:

Solid-state physics
Quantum electronics
Photonics

Background:

Efficient storage of photonic signals is crucial for optical computing and quantum information processing.
Existing methods often suffer from short storage durations, limiting their practical applications.

Purpose of the Study:

To demonstrate efficient and long-term storage of photonic signals in a novel semiconductor-based memory cell.
To investigate the mechanism of photon storage and retrieval using a tunable electrostatic superlattice.

Main Methods:

Utilized a semiconductor memory cell featuring a quantum well for storing electron-hole pairs generated from incident photons.
Employed a field-effect tunable electrostatic superlattice to modulate the quantum well potential.
Investigated storage times at large superlattice potential amplitudes and triggered release by flattening the superlattice amplitude.

Main Results:

Achieved efficient storage of photonic signals.
Extended the storage time of electron-hole pairs by at least five orders of magnitude beyond their natural lifetime.
Demonstrated controlled release of stored photons in a short, intense flash of incoherent light.

Conclusions:

The developed semiconductor memory cell offers a promising platform for long-term photonic signal storage.
The field-effect tunable electrostatic superlattice is key to achieving extended storage times and controlled release.
This technology has significant implications for advancing optical data storage and processing.