Summary of Key Achievements
The research team led by Zhou Peng and Liu Chunsen from Fudan University has made a significant breakthrough in room-temperature single-electron non-volatile quantum storage technology. For the first time, they have achieved the physical limit of using “a single electron to represent one bit of information” at normal room temperature (27°C), significantly reducing energy consumption during data storage. This breakthrough overcomes the previous constraint that quantum effects could only be stably observed at extremely low temperatures (close to absolute zero), thereby overcoming the biggest obstacle to the commercialization of this technology. The findings were published in the prestigious journal *Science*. The team plans to establish a startup company later this year to develop and validate the technology using existing semiconductor production lines. This innovation has the potential to integrate storage and computing functions, addressing the fundamental issue of high energy consumption in data centers and supporting China’s national strategy of “moving data processing from the east to the west.”
Detailed Explanation
1. Overcoming the Bottleneck of Storage Chips
With the explosive growth in artificial intelligence (AI), the demand for computing power has surged, but storage chips have become a limiting factor. Two main issues arise: slow data transfer between storage and processing units, and high energy consumption (in data centers, the energy required to move data can be several times higher than that used for actual computations). Traditional storage technologies, such as DRAM, require a large number of electrons to store a single bit of information, which is inefficient and prone to data loss. The Fudan team’s technology uses just one electron to store data, effectively solving these two problems.
2. Single-Electron Storage: Increasing Efficiency Dramatically
Professor Zhou Peng used a vivid analogy to explain this concept: Previously, storing one bit of information required “200,000 people” (corresponding to the 200,000 electrons in DRAM) to be detected; with single-electron storage, even one person (a single electron) can cause a significant change in the electrical potential of the storage device, allowing for precise detection. This leads to:
- Drastic Energy Reduction: The energy required to store data is reduced significantly, as the number of electrons needed per bit is decreased by a factor of many orders of magnitude.
- Significant Density Increase: Single electrons occupy very little space, enabling storage chips to hold much more data. As a result, the storage capacity of smartphones, computers, and data centers will greatly increase.
3. Room-Temperature Breakthrough
Previously, quantum effects could only be observed at extremely low temperatures (around -272°C), which made the technology too costly for widespread use due to the need for specialized cooling systems. The Fudan team’s achievement brings this technology to normal room temperature, making it practical for industrial applications. This is a crucial step towards commercialization, as without such a breakthrough, quantum storage would remain limited to laboratories.
4. Industrialization Possibilities
The team plans to set up a startup later this year to develop and validate the technology using existing semiconductor production lines, eliminating the need for expensive new manufacturing facilities. This significantly lowers the barriers to industrialization. Moreover, single-electron storage allows for the integration of storage and computing functions, reducing data transfer distances to just a few hundred nanometers (one ten-thousandth of the thickness of a human hair). This integration eliminates the need for additional data transfer steps, making data centers more energy-efficient and aligning with China’s strategy of “moving data processing from the east to the west.”
5. A Step-by-Step Journey to Innovation
This breakthrough did not come suddenly; the team has previously made several significant achievements:
- “Dawn” Flash Memory: The fastest flash memory in the world (400 picoseconds), solving the issue of balancing high speed and non-volatility.
- “Long-Ying” Chip: This chip, integrated with CMOS technology, was recognized by *Nature* as an “original breakthrough” and selected as one of the top ten scientific advancements in China for 2025.
The single-electron storage technology represents another milestone, pushing storage capabilities beyond the speed limits and towards maximum density. The team’s continuous progress demonstrates their dedication to pushing the boundaries of quantum storage technology.
Conclusion
The Fudan University’s innovation not only scientifically overcomes the room-temperature limitations of quantum storage but also opens up new possibilities for industrial advancement. By using existing production lines, this technology offers low energy consumption, high data density, and integrated storage and computing functions, addressing core challenges in the computing industry. For consumers, this could result in thinner, more durable smartphones with longer battery life, and lower data center energy costs (thus reducing the cost of internet services). For the country, it represents a crucial step in mastering core technologies in the chip sector, fostering the development of the digital economy.