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Fabrication of polymeric micro-resonators with nanodiamonds for quantum information technologies

Grant number: 20/08715-2
Support Opportunities:Scholarships in Brazil - Doctorate (Direct)
Effective date (Start): September 01, 2020
Effective date (End): February 28, 2025
Field of knowledge:Physical Sciences and Mathematics - Physics - Condensed Matter Physics
Principal Investigator:Cleber Renato Mendonça
Grantee:Filipe Assis Couto
Host Institution: Instituto de Física de São Carlos (IFSC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
Associated research grant:18/11283-7 - Nonlinear photonics: spectroscopy and advanced processing of materials, AP.TEM
Associated scholarship(s):22/13615-2 - Incorporation and characterization of silicon vacancies in silicon carbide photonic crystal cavities, BE.EP.DD


To achieve the integration of quantum information technologies in photonic devices, it is necessary to combine resonant microstructures and waveguides in a single three-dimensional (3D) platform. The diamond is a material of interest to be incorporated in such devices, because defects inserted in its crystalline structure present phenomena that make it promising as a matrix for the elements that act as qubits. Among such defects, the nitrogen vacancy centers (NV-) are of particular interest, which act as single photon emitters that have spin states that can be manipulated and read optically at room temperature. Thus, the incorporation and precise control of the location of NV- centers are extremely important in the manufacture of such devices. In line with these interests, the present doctoral research project aims to use the photopolymerization technique by absorption of two photons (A2F) for the manufacture of optical microcavities, to which nanodiamonds with NV centers will be incorporated. Initially, the methodology for the incorporation of nano-diamonds in structures manufactured via A2F and their characterization will be developed. Then, resonant microstructures will be produced that support Whispering Gallery Modes (WGMs), whose confinement results in microcavities of high quality factor and low modal volume. By manipulating the parameters of such microstructures so as to be resonant with the fluorescence emitted by the color centers, we hope to confine and amplify the emitted signal, further advancing towards a device capable of processing quantum information. (AU)

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Scientific publications (4)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
VALVERDE, JOAO V. P.; PELOSI, ANDRE G.; ZUCOLOTTO COCCA, LEANDRO H.; MARBELLO, ORLANDO D.; LE BESCONT, JULIE; BRETON-PATIENT, CHLOE; PIGUEL, SANDRINE; SILVA, DANIEL L.; DE BONI, LEONARDO; MENDONCA, CLEBER R.. Two-photon absorption in imidazo[1,2-a]pyridine derivatives: Study of nonlinear optical response and dipolar properties. JOURNAL OF MOLECULAR LIQUIDS, v. 373, p. 11-pg., . (20/08715-2, 18/11283-7, 16/20886-1, 11/12399-0, 15/20032-0)
NOLASCO, L. K.; COUTO, F. A.; ANDRADE, M. B.; MENDONCA, C. R.. Femtosecond laser micromachining study with multiple wavelengths in CVD diamond. DIAMOND AND RELATED MATERIALS, v. 131, p. 6-pg., . (18/11283-7, 20/08715-2)
COUTO, FILIPE A.; PAULA, KELLY T.; V. SANTOS, MOLIRIA; RIBEIRO, SIDNEY J. L.; MENDONCA, CLEBER R.. Direct femtosecond laser printing of silk fibroin periodic structure with lower mid-infrared reflectivity. Optical Materials, v. 135, p. 6-pg., . (18/11283-7, 20/08715-2)
COUTO, FILIPE A.; ANDRADE, MARCELO B.; OTUKA, ADRIANO J. G.; PRATAVIEIRA, SEBASTIAO; MUNIZ, SERGIO R.; MENDONCA, CLEBER R.. Integrating Fluorescent Nanodiamonds into Polymeric Microstructures Fabricated by Two-Photon Polymerization. NANOMATERIALS, v. 13, n. 18, p. 9-pg., . (18/11283-7, 09/54035-4, 20/08715-2, 13/07276-1, 19/27471-0)

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