Journal
JOURNAL OF LIGHTWAVE TECHNOLOGY
Volume 40, Issue 23, Pages 7538-7571Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JLT.2022.3210466
Keywords
Cavity optomechanics; color centers; diamond; quantum network; quantum photonics; sensing and metrology; nanofabrication; spins; spin-photon transduction
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Integrated photonic devices in diamond show great potential in quantum applications such as quantum communication, quantum information processing, and quantum sensing. Diamond's exceptional thermal, optical, and mechanical properties make it an ideal host for optical active spin qubits, which are crucial for quantum technologies. Recent advances in diamond nanofabrication techniques have opened up new possibilities for scaling up these experiments towards practical quantum technologies.
Integrated photonic devices in diamond have tremendous potential for many quantum applications, including long-distance quantum communication, quantum information processing, and quantum sensing. These devices benefit from diamond's combination of exceptional thermal, optical, and mechanical properties. Its wide electronic bandgap makes diamond an ideal host for a variety of optical active spin qubits that are key building blocks for quantum technologies. In landmark experiments, diamond spin qubits have enabled demonstrations of remote entanglement, memory-enhanced quantum communication, and multi-qubit spin registers with fault-tolerant quantum error correction, leading to the realization of multinode quantum networks. These advances put diamond at the forefront of solid-state material platforms for quantum information processing. Recent developments in diamond nanofabrication techniques provide a promising route to further scaling of these landmark experiments towards real-life quantum technologies. In this paper, we focus on the recent progress in creating integrated diamond quantum photonic devices, with particular emphasis on spin-photon interfaces, cavity optomechanical devices, and spin-phonon transduction. Finally, we discuss prospects and remaining challenges for the use of diamond in scalable quantum technologies.
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