Science, Space and Technology News 2024
In quantum information science, many particles can act as “bits,” from individual atoms to photons. At JILA, researchers utilize these bits as “qubits,” storing and processing quantum 1s or 0s through a unique system.
Adding to the issue is the incompatibility between the material that hosts the artificial atoms and the material that hosts the photonic circuit. Despite years of research, scientists have yet to find a suitable material that can be a good host of both, making the integration more difficult.
However, the downside of using a diamond as a qubit host is that it’s incredibly hard to carve, making it difficult to define photonic circuits on them. It is also difficult to get a large diamond piece, unlike other photonic materials such as silicon nitride, where eight-inch wafers are readily available.
Besides contributing to better compatibility, the ultraprecise placement technique allowed researchers to align several artificial atoms in a row on the same circuit, showing the flexibility of their process and its capability to host multiple qubits at once. Currently, Ngan, Zhan, and other JILA researchers are working on techniques to make these artificial atoms interact with each other with the help of photons and to entangle two artificial atoms with the help of photons.
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