A General and Modular Approach to Solid-State Integration of Zero-Dimensional Quantum Systems
Year: 2025
Type: article
Abstract: Here, we present an all-electrical readout mechanism for quasi-0D quantum states (0D-QS), such as point defects, adatoms, and molecules, that is modular and general, providing an approach that is amenable to scaling and integration with other solid-state quantum technologies. Our approach relies on the creation of high-quality tunnel junctions via the mechanical exfoliation and stacking of multilayer graphene (MLG) and hexagonal boron nitride (hBN) to encapsulate the target system in an MLG/hBN/0D-QS/hBN/MLG heterostructure. This structure allows for all-electronic spectroscopy and readout of candidate systems through a combination of coulomb and spin-blockade. As a proof of principle, we demonstrate electronic tunneling spectroscopy of point defects in hBN and the molecular qubit vanadyl phthalocyanine. Our approach demonstrates a new pathway for the incorporation of molecules and atomic defects into solid-state quantum devices and circuits along with a readout scheme that does not rely on highly constrained optical processes for photonic readout.
Source: Nano Letters
Authors: Marzieh Kavand, Zoe Phillips, William H. Koll, Morgan Hamilton, Ethel Perez-Hoyos, Rianna Greer, Ferdous Ara, Daniel Pharis, Kian Maleki, Mingyu Xu, Takashi Taniguchi, Paul Canfield, Michael E. Flatté, Danna E. Freedman, Jay Gupta, Ezekiel Johnston-Halperin
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $4,500
Funders: National Science Foundation, U.S. Department of Energy, Ohio State University, University of Michigan, Iowa State University, Asian Office of Aerospace Research and Development, Ministry of Education, Culture, Sports, Science and Technology, Directorate for Mathematical and Physical Sciences, Materials Research Science and Engineering Center, Harvard University, Japan Society for the Promotion of Science, Division of Materials Research, Division of Graduate Education, Office of Multidisciplinary Activities, Core Research for Evolutional Science and Technology, Air Force Research Laboratory, Division of Materials Sciences and Engineering
Awards: G1418315740, G1519358529, NRT-QISE: a new interdisciplinary degree program for convergent research and graduate training in quantum information science and engineering, G209568226, G237429762, G2441759041, G2442584775, G249831736, G266914229, G3062877667, G333242795, G4091144171, G4162329948, G4806815962, QII-TAQS: Solid State Integration of Molecular Qubits, G524707868, G5377444928, G5613623313, G5956625161, G6718509927, G6752481577, Center for Emergent Materials, an NSF MRSEC, G7879866177, G8094016753, G898758523, G8997218226, G969889393
OpenAlex ID: W4413964496