The Future of Quantum Computing

Tiny Flaws in Diamonds Could Unlock a Quantum Computing Revolution

A new computational technique could accelerate the search for diamond materials capable of powering future quantum computers and highly sensitive sensors. Developed by a researcher at the U.S. Department of Energy's (DOE) Princeton Plasma Physics Laboratory (PPPL), the method makes it much easier to identify promising materials for quantum technology, potentially opening the door to advances across many areas of science.The approach has already revealed new candidates for quantum computing and sensing applications. The findings were recently published in ACS Central Science and have attracted attention from other researchers in the field.One of the biggest challenges in developing quantum technology is finding materials that can maintain delicate quantum states under practical conditions. Many candidates require extremely low temperatures to function reliably. Diamond materials stand out because certain quantum properties can remain useful even at room temperature.This capability could help advance technologies that are important to national research priorities and the development of next-generation computing. Quantum sensors promise levels of sensitivity and precision beyond those of conventional instruments, while quantum computers could eventually solve certain extraordinarily complex problems much faster than today's most powerful supercomputers.Why Imperfect Diamonds Could Be the Key to Quantum ComputingAlthough diamonds are made of carbon atoms, a flawless diamond crystal is not enough to create a useful quantum computing system. The key lies in tiny irregularities within the crystal structure.These imperfections, known as defects, can occur when a carbon atom is absent from its normal position, when another element replaces a carbon atom, or when both changes occur together. The atoms surrounding these defects can form qubits, the basic units used to store and process quantum information in quantum computers and sensors.Finding the most useful defects, howeve