Tunable and Transferable Diamond Membranes for Integrated Quantum Technologies
arXiv:2109.11507 · doi:10.1021/acs.nanolett.1c03703
Abstract
Color centers in diamond are widely explored as qubits in quantum technologies. However, challenges remain in the effective and efficient integration of these diamond-hosted qubits in device heterostructures. Here, nanoscale-thick uniform diamond membranes are synthesized via "smart-cut" and isotopically (12C) purified overgrowth. These membranes have tunable thicknesses (demonstrated 50 nm to 250 nm), are deterministically transferable, have bilaterally atomically flat surfaces (Rq <= 0.3 nm), and bulk-diamond-like crystallinity. Color centers are synthesized via both implantation and in-situ overgrowth incorporation. Within 110 nm thick membranes, individual germanium-vacancy (GeV-) centers exhibit stable photoluminescence at 5.4 K and average optical transition linewidths as low as 125 MHz. The room temperature spin coherence of individual nitrogen-vacancy (NV-) centers shows Ramsey spin dephasing times (T2*) and Hahn echo times (T2) as long as 150 us and 400 us, respectively. This platform enables the straightforward integration of diamond membranes that host coherent color centers into quantum technologies.
50 pages, 13 figures
References in corpus (16)
- Quantum technologies with hybrid systems
- High-fidelity projective readout of a solid-state spin quantum register
- Realization of a multi-node quantum network of remote solid-state qubits
- Silicon-Vacancy Spin Qubit in Diamond: A Quantum Memory Exceeding 10 ms with Single-Shot State Readout
- Fast pick up technique for high quality heterostructures of bilayer graphene and hexagonal boron nitride
- Dynamic strain-mediated coupling of a single diamond spin to a mechanical resonator
- Engineering shallow spins in diamond with nitrogen delta-doping
- All-optical initialization, readout, and coherent preparation of single silicon-vacancy spins in diamond
- Nanoscale NMR Spectroscopy and Imaging of Multiple Nuclear Species
- Coherent Acoustic Control of a Single Silicon Vacancy Spin in Diamond
- Optically coherent nitrogen-vacancy centers in μm-thin etched diamond membranes
- Initialization and Readout of Nuclear Spins via negatively charged Silicon-Vacancy Center in Diamond
- Electrical tuning of tin-vacancy centers in diamond
- A cavity-based optical antenna for color centers in diamond
- High-Q Nanophotonic Resonators on Diamond Membranes using Templated Atomic Layer Deposition of TiO2
- Quantum engineering with hybrid magnonics systems and materials
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- Dynamic strain modulation of a nanowire quantum dot compatible with a thin-film lithium niobate photonic platform
- Towards high spatial resolution magnetic imaging with a compact practical quantum diamond microscope
- Homogeneous Free-Standing Nanostructures from Bulk Diamond over Millimeter Scales for Quantum Technologies
- Coherence Properties of Rare-Earth Spins in Micrometer-Thin Films
- Above-Unity Coherent Cooperativity of Tin-Vacancy Centers in Diamond Photonic Crystal Cavities
- Color-Center-Compatible Freestanding Diamond Directional Couplers for Quantum Photonics
- Metalens formed by structured arrays of atomic emitters
- Laser-cut Patterned, Micrometer-thin Diamond Membranes with Coherent Color Centers for Open Microcavities