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Microstructures with cold Rydberg atoms

Grant number: 11/22309-8
Support type:Scholarships in Brazil - Doctorate
Effective date (Start): April 01, 2012
Effective date (End): October 01, 2016
Field of knowledge:Physical Sciences and Mathematics - Physics - Atomic and Molecular Physics
Principal researcher:Luis Gustavo Marcassa
Grantee:Luís Felipe Barbosa Faria Gonçalves
Home Institution: Instituto de Física de São Carlos (IFSC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
Associated scholarship(s):14/09369-0 - Few-ion imaging techniques, BE.EP.DR


Samples of cold Rydberg atoms have been proposed as ideal systems to perform quantum computation. This is because these atoms present ultralong-range interactions in general from 2 to 10¼m for a principal quantum number ranging between 30 and 70. Making use of various theoretical proposals such interaction using the internal states of atoms to generate entanglement, and thus create the qubit. In all these theoretical proposals, only two atoms separated by a distance R are considered. This difficult task was accomplished experimentally by two research groups in the world recently, through the use of two micro-optical dipole traps. These two groups trapped atoms, one in each trap. Despite the success, such experimental realization is complex. In this project, we propose to create spatial structures using similar but different spatial arrangements of laser beams of Rydberg state excitation. Our proposal will simplify the experimental setup and allow us to build microstructures with Rydberg atoms. These distributions allow us to observe spatial anisotropy due to interactions between Rydberg atoms. (AU)

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Scientific publications
(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)
RODRIGUES, JOAO D.; GONCALVES, LUIS F.; TERCAS, HUGO; MARCASSA, LUIS G.; MENDONCA, JOSE T.. Roton-induced trapping in strongly correlated Rydberg gases. Physical Review A, v. 98, n. 6, . (11/22309-8, 13/02816-8)
JAHANGIRI, AKBAR; SHAFFER, JAMES P.; GONCALVES, LUIS FELIPE; MARCASSA, LUIS GUSTAVO. Anisotropic interactions in electric field polarized ultracold Rydberg gases. JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, v. 53, n. 1, . (11/22309-8, 13/02816-8)
GONCALVES, LUIS FELIPE; MARCASSA, LUIS GUSTAVO. Control of Rydberg-atom blockade by dc electric-field orientation in a quasi-one-dimensional sample. Physical Review A, v. 94, n. 4, . (13/02816-8, 11/22309-8)
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
GONÇALVES, Luís Felipe Barbosa Faria. Rydberg-atom interactions in the excitation blockade regime. 2016. Doctoral Thesis - Universidade de São Paulo (USP). Instituto de Física de São Carlos (IFSC/BT) São Carlos.

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