公开(公告)号：US12237162B2

公开(公告)日：2025-02-25

申请号：US17371899

申请日：2021-07-09

Applicant: Duke University ,  Coldquanta, Inc.

Inventor： Jungsang Kim ,  Geert Vrijsen ,  Ismail Inlek ,  Tom Noel ,  Megan Ivory ,  Alexander Kato ,  Steve Hughes

IPC: H01J49/42 ,  H01J49/16 ,  H01J49/24

Abstract: Aspects of the present disclosure describe systems, methods, and structures that enable a compact, UHV ion trap system that can operate at temperatures above cryogenic temperatures. Ion trap systems in accordance with the present disclosure are surface treated and sealed while held in a UHV environment, where disparate components are joined via UHV seals, such as weld joints, compressible metal flanges, and UHV-compatible solder joints. As a result, no cryogenic pump is required, thereby enabling an extremely small-volume system.

公开(公告)号：US11538674B2

公开(公告)日：2022-12-27

申请号：US16950703

申请日：2020-11-17

Applicant: Duke University

Inventor： Geert Vrijsen ,  Jungsang Kim ,  Robert Spivey ,  Ismail Inlek ,  Yuhi Aikyo

IPC: H01J49/04 ,  H01J49/16 ,  H01J49/42 ,  H01J49/00 ,  G06N10/00

Abstract: Systems and methods for loading microfabricated ion traps are disclosed. Photo-ablation via an ablation pulse is used to generate a flow of atoms from a source material, where the flow is predominantly populated with neutral atoms. As the neutral atoms flow toward the ion trap, two-photon photo-ionization is used to selectively ionize a specific isotope contained in the atom flow. The velocity of the liberated atoms, atom-generation rate, and/or heat load of the source material is controlled by controlling the fluence of the ablation pulse to provide high ion-trapping probability while simultaneously mitigating generation of heat in the ion-trapping system that can preclude cryogenic operation. In some embodiments, the source material is held within an ablation oven comprising an electrically conductive housing that is configured to restrict the flow of agglomerated neutral atoms generated during photo-ablation toward the ion trap.

公开(公告)号：US20230037882A1

公开(公告)日：2023-02-09

申请号：US17883062

申请日：2022-08-08

Applicant: Duke University

Inventor： Robert Spivey ,  Kai Hedek ,  Ismail Inlek ,  Jungsang Kim ,  Zhubing Jia

IPC: G02B7/00

Abstract: Technologies for an optomechanical system include an intermediate plate having a top surface with multiple tapped holes arranged in a grid. A pair of dowel pin holes surround each tapped hole in a linear pattern. Multiple optical blocks are coupled to the intermediate plate using dowel pins positioned in the dowel pin holes and corresponding dowel pin holes defined in the bottom surface of the optical block. Each optical block includes multiple optical elements coupled to the top surface of the optical block with dowel pins. A cryostat may be coupled to the intermediate plate. A cryo-package assembly is mounted inside a cryo chamber of the cryostat. The cryo-package assembly includes a cryo device such as an ion trap covered by a machined copper lid. The lid includes a meandering passageway to allow for differential pumping in order to achieve ultra-high vacuum within the cryo-package assembly.

公开(公告)号：US10923335B2

公开(公告)日：2021-02-16

申请号：US16357488

申请日：2019-03-19

Applicant: Duke University

Inventor： Geert Vrijsen ,  Jungsang Kim ,  Robert Spivey ,  Ismail Inlek ,  Yuhi Aikyo

IPC: H01J49/02 ,  H01J49/00 ,  H01J49/42 ,  G06N10/00 ,  H01J49/16 ,  H01J49/04

Abstract: Systems and methods for loading microfabricated ion traps are disclosed. Photo-ablation via an ablation pulse is used to generate a flow of atoms from a source material, where the flow is predominantly populated with neutral atoms. As the neutral atoms flow toward the ion trap, two-photon photo-ionization is used to selectively ionize a specific isotope contained in the atom flow. The velocity of the liberated atoms, atom-generation rate, and/or heat load of the source material is controlled by controlling the fluence of the ablation pulse to provide high ion-trapping probability while simultaneously mitigating generation of heat in the ion-trapping system that can preclude cryogenic operation. In some embodiments, the source material is held within an ablation oven comprising an electrically conductive housing that is configured to restrict the flow of agglomerated neutral atoms generated during photo-ablation toward the ion trap.