Fudan Develops 1-Electron Quantum Flash Memory, Storing Data at 27 C
Updated
Updated · China Daily · Jul 24
Fudan Develops 1-Electron Quantum Flash Memory, Storing Data at 27 C
1 articles · Updated · China Daily · Jul 24
Summary
Fudan University researchers reported a two-dimensional quantum flash device that stably stores a single electron at 27 C, achieving nonvolatile memory at room temperature.
The device aims to bridge a long-standing tradeoff: DRAM is fast but loses data without power, while 3D NAND retains data for years but reads and writes more slowly.
One electron generates a 0.5-volt memory window in what the team called the world's largest nonvolatile quantum memory window, versus about 200,000 electrons typically needed to store one bit in advanced DRAM.
Published in Science on July 17, the work could enable denser, lower-power memory integrated more closely with processors, cutting data-transfer delays for AI and AGI workloads.
The team also said it predicted and experimentally observed a new quantum memory effect — described as a 'density of states scissors' mechanism — that could support future commercialization of quantum storage.
Can a single-electron memory chip truly be mass-produced, or will it remain a lab breakthrough?
Could this new quantum memory finally end the global RAM crisis and upend the chip market?
How will this quantum leap in memory hardware accelerate the race for artificial general intelligence?
Storing Data with a Single Electron at Room Temperature: Fudan University’s “Guiyi” Quantum Flash Memory Revolution
Overview
Fudan University has achieved a major breakthrough with its 'Guiyi' quantum flash memory device, which can store data using a single electron at room temperature. Unlike previous single-electron storage attempts that needed cryogenic cooling and produced weak signals, Guiyi delivers a strong 0.5V signal, making it practical for real-world use. This innovation builds on Fudan’s expertise in non-volatile memory and is set to address the memory bottleneck in AI hardware. By enabling faster, denser, and more energy-efficient memory, Guiyi could reshape the future of computing and artificial intelligence.