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Method and apparatus for quantum information processing using entangled neutral-atom qubits

United States Patent

9,934,469
April 3, 2018
View the Complete Patent at the US Patent & Trademark Office
Sandia National Laboratories - Visit the Intellectual Property Management and Licensing Website
A method for preparing an entangled quantum state of an atomic ensemble is provided. The method includes loading each atom of the atomic ensemble into a respective optical trap; placing each atom of the atomic ensemble into a same first atomic quantum state by impingement of pump radiation; approaching the atoms of the atomic ensemble to within a dipole-dipole interaction length of each other; Rydberg-dressing the atomic ensemble; during the Rydberg-dressing operation, exciting the atomic ensemble with a Raman pulse tuned to stimulate a ground-state hyperfine transition from the first atomic quantum state to a second atomic quantum state; and separating the atoms of the atomic ensemble by more than a dipole-dipole interaction length.
Jau; Yuan Yu (Albuquerque, NM), Biedermann; Grant (Albuquerque, NM), Deutsch; Ivan (Albuquerque, NM)
National Technology & Engineering Solutions of Sandia, LLC (Albuquerque, NM)
15/ 370,224
December 6, 2016
FEDERALLY SPONSORED RESEARCH The United States Government has rights in this invention pursuant to Department of Energy Contract No. DE-AC04-94AL85000 with Sandia Corporation.