Atom transport for nanofiber quantum computing and repeater and method

A quantum computer cell system or a quantum repeater system, the system comprising:

• a fiber optical cable having a first end region and a second end region, the first end region having a first end, and the second end region having a second end, the fiber optical cable comprising silicon dioxide material comprising a core region and a cladding region configured around the core region;
• a first fiber Bragg Grating configured on the first end region;
• a second fiber Bragg Grating configured on the second end region;
• a nanofiber region configured from a center portion of the fiber optic cable and coupled between the first end region and the second end region, the nanofiber region having a transmission of 95% and greater, the nanofiber region having a diameter ranging from 300 nanometer to 1.5 micrometer, the nanofiber region ranging from 10 micrometer to 10 centimeter in length;
• a first taper region configured from a first portion of the nanofiber region within a vicinity of the first fiber Bragg Grating;
• a second taper region configured from a second portion of the nanofiber region within a vicinity of the second fiber Bragg Grating;
• a cavity formed from the nanofiber region between the first fiber Bragg Grating and the second fiber Bragg Gratings;
• a plurality of atoms comprising at least one or more of an alkali metal atom, an alkaline-earth metal, a cesium, a rubidium, ytterbium, and strontium, such that a number of the atoms range from one to 100,000 are evanescently coupled at least the nanofiber region between the first fiber Bragg grating and the second fiber Bragg grating;
• an imaging system operably coupled to the nanofiber region and characterized by a numerical aperture of 0.1 and greater, the imaging system configured with a first laser source to generate an optical tweezer array configured to cause trapping of the number of atoms that are evanescently coupled to at least the nanofiber region;
• a backside imaging system characterized by a numerical aperture of 0.05 and greater, the backside imaging system configured with a second laser source to generate a counter-propagating optical tweezer array and/or a weakly focusing beam to interfere with the optical tweezer array to selectively transport at least one of the plurality of atoms that are evanescently coupled to the nanofiber region.