A team of researchers led by Associate Professor Nobuhiro Yanai from Kyushu University has made a groundbreaking discovery in the field of quantum computing. In a recent study published in Science Advances, the team reported successfully achieving quantum coherence at room temperature, a significant advancement for the development of quantum computing and sensing technologies.
To achieve this feat, the researchers embedded a chromophore, a dye molecule that absorbs and emits light, within a metal-organic framework (MOF). The MOF is a nanoporous crystalline structure composed of metal ions and organic ligands.
Quantum coherence is the ability of a quantum system to maintain a well-defined state over time without being disturbed by external factors. In traditional quantum computing, coherence usually requires extremely low temperatures, typically achieved using liquid nitrogen. However, the researchers were able to achieve quantum coherence at room temperature by using the unique properties of the MOF and carefully controlling the motion of the chromophore.
By introducing a chromophore based on pentacene, the researchers enabled the electrons to transition from a triplet state to a quintet state while maintaining quantum coherence at room temperature. With this setup, the team observed quantum coherence for over 100 nanoseconds.
While the coherence was observed only for a short period of time, the findings hold great promise for the future of quantum computing. This breakthrough opens doors for the design of materials that can generate multiple qubits at room temperatures, a crucial requirement for practical quantum computing.
Associate Professor Nobuhiro Yanai believes that further research can optimize the MOF structure and find guest molecules that induce enhanced suppression of motion, thereby improving the efficiency of generating multiexciton state qubits. These advancements could lead to room-temperature molecular quantum computing and quantum sensing of various target compounds.
In conclusion, this research represents a significant step forward in the pursuit of practical quantum computing technologies. The achievement of quantum coherence at room temperature has the potential to revolutionize computing and sensing capabilities, and it paves the way for further advancements in the field.
The source of the article is from the blog agogs.sk