This project focuses on the development of a hybrid platform comprising various superconducting devices fabricated on diamond, intended for use as a quantum random access memory unit in quantum computing. The superconducting devices are of two primary types. First, superconducting resonators, which are crucial for operational and read-out tasks, enabling the manipulation and subsequent retrieval of quantum information. Second, superconducting qubits, including flux qubits and transmons, which form the foundational elements of solid-state quantum computers.
On the other hand, the diamond substrate has pre-implanted Nitrogen-Vacancy (NV) centers that can store quantum information originating from the superconducting qubits for later access. Typically, superconducting qubits do not offer long coherence times, meaning that quantum information has a short life span within these devices. NV centers, however, exhibit significantly longer coherence times, thus providing a memory bank where quantum information can be stored for extended periods. This capability allows NV centers in the diamond to function as a quantum memory, enabling the storage of quantum information while other calculations are conducted using the superconducting qubits.
In essence, the integration of superconducting devices with diamond NV centers leverages the strength of both components, facilitating the development of an efficient quantum random access memory system. This hybrid approach addresses the coherence limitation of superconducting qubits by utilizing the long coherence time of NV centers, thereby enhancing the overall performance and scalability of quantum computing applications.
