Researchers in Japan have made a groundbreaking discovery in the field of quantum computing, achieving quantum coherence at room temperature. Led by Prof. Nobuhiro Yanai of Kyushu University, the team was able to observe the quantum coherence of a “quintet state with four electron spins” in molecular systems at room temperature.
Quantum coherence refers to the ability of a quantum system to maintain a well-defined state over time without being disturbed by external factors. This is crucial for the functioning of quantum computers, which rely on quantum bits or qubits to store and manipulate information.
While achieving quantum coherence has previously only been possible at extremely low temperatures, the team found a way to achieve it at room temperature by introducing a specific chromophore based on pentacene in a metal-organic framework (MOF). The MOF acts as a matrix to trap the chromophores, suppressing molecular motion and enabling the observation of quantum coherence.
Although the quantum coherence was only observed for nanoseconds, the researchers remain optimistic about the potential of their findings. They believe that their discovery could pave the way for the development of materials that can generate multiple qubits at room temperature, leading to advancements in molecular quantum computing.
“This is the first room-temperature quantum coherence of entangled quintets,” said Prof. Yasuhiro Kobori of Kobe University, who was also involved in the research. “In the future, by searching for guest molecules that can induce more suppressed motions and developing suitable MOF structures, it will be possible to generate quintet multiexciton state qubits more efficiently.”
The achievement of room-temperature quantum coherence brings us one step closer to practical quantum computing. As scientists continue to explore the possibilities of this revolutionary technology, we can expect further advancements and breakthroughs in the near future.
The source of the article is from the blog tvbzorg.com