Atomic object confinement apparatus with radio frequency electrode shaping for periodic boundary conditions

Patent metadata

Field	Value
Publication number	US-12087463-B2
Application number	US-202218049845-A
Country	US
Kind code	B2
Filing date	Oct 26, 2022
Priority date	Dec 10, 2021
Publication date	Sep 10, 2024
Grant date	Sep 10, 2024

Abstract

Atomic object confinement apparatuses that include RF busses and systems including atomic object confinement apparatuses that include RF busses are provided. An example atomic object confinement apparatus comprises RF rail electrodes and an RF bus electrode(s). The RF rail electrodes form a periodic array of confinement segments within a central zone of the atomic object confinement apparatus and the RF bus electrodes are disposed in a perimeter zone disposed about the central zone. The RF rail electrodes and the RF bus electrode(s) are configured to generate a substantially periodic array of trapping regions when an oscillating voltage signal is applied to the RF rail electrodes and the RF bus electrode(s).

First claim

That which is claimed:

1. An atomic object confinement apparatus comprising:
a plurality of electrodes comprising a plurality of radio frequency (RF) rail electrodes, the plurality of RF rail electrodes arranged to define, at least in part, a periodic array of confinement segments, wherein the plurality of RF rail electrodes are configured such that, when an oscillating voltage signal is applied thereto, the plurality of RF rail electrodes generate a pseudopotential in the form of an array of trapping regions configured to contain at least one atomic object within a respective trapping region of the array of trapping regions; and
the plurality of electrodes further comprising one or more RF bus electrodes disposed about at least a portion of a perimeter zone of the atomic object confinement apparatus, wherein the one or more RF bus electrodes are configured such that, when the oscillating voltage signal is applied thereto, the one or more RF bus electrodes cause the array of trapping regions to be substantially periodic.

2. The atomic object confinement apparatus of claim 1 , wherein the plurality of RF rail electrodes are disposed in a periodic arrangement, wherein the periodic arrangement is defined at least in part by a tiling cell.

3. The atomic object confinement apparatus of claim 2 , wherein a portion of the one or more RF bus electrodes comprises one or more perimeter cells that are at least partial copies of the tiling cell disposed in the perimeter zone.

4. The atomic object confinement apparatus of claim 1 , wherein the one or more RF bus electrodes comprises a continuous electrode that extends substantially along at least one edge of the perimeter zone.

5. The atomic object confinement apparatus of claim 4 , wherein the continuous electrode is substantially rectangular in shape.

6. The atomic object confinement apparatus of claim 4 , wherein the continuous electrode comprises electrode portions that each extend along a respective edge of the perimeter zone.

7. The atomic object confinement apparatus of claim 6 , wherein each electrode portion is one of either (a) substantially rectangular or (b) gradient-edged.

8. The atomic object confinement apparatus of claim 6 , wherein at least one electrode portion has a width that changes along a length of the at least one electrode portion.

9. The atomic object confinement apparatus of claim 8 , wherein the at least one electrode portion is narrowest at a middle of the at least one electrode portion.

10. The atomic object confinement apparatus of claim 1 , wherein the one or more RF bus electrodes comprise one or more corner features, each corner feature disposed at a respective corner of the perimeter zone.

11. The atomic object confinement apparatus of claim 1 , wherein the one or more RF bus electrodes comprise a plurality of distinct RF bus electrodes.

12. The atomic object confinement apparatus of claim 11 , wherein each distinct RF bus electrode of the plurality of distinct RF bus electrodes extends from a respective end of a respective one or pair of the plurality of RF rail electrodes.

13. An atomic object confinement apparatus comprising:
one or more radio frequency (RF) rail electrodes and one or more RF bus electrodes, wherein at least a subset of the one or more RF rail electrodes are disposed in a central zone of the atomic object confinement apparatus and the RF bus electrodes are disposed about in a perimeter zone of the atomic object confinement apparatus that is disposed about the central zone and wherein the one or more RF rail electrodes and the one or more RF bus electrodes are configured such that when an oscillating voltage signal is applied to the one or more RF rail electrodes and the one or more RF bus electrodes, the one or more RF rail electrodes and one or more RF bus electrodes generate a periodic array of trapping regions in at least a part of the central zone of the atomic object confinement apparatus.

14. A quantum computer comprising:
an atomic object confinement apparatus comprising:
a plurality of electrodes comprising a plurality of radio frequency (RF) rail electrodes, the plurality of RF rail electrodes arranged to define, at least in part, a periodic array of confinement segments, wherein the plurality of RF rail electrodes are configured such that, when an oscillating voltage signal is applied thereto, the plurality of RF rail electrodes generate an array of trapping regions configured to contain at least one atomic object within a respective trapping region of the array of trapping regions, and
the plurality of electrodes further comprising one or more RF bus electrodes disposed about at least a portion of a perimeter zone of the atomic object confinement apparatus, wherein the one or more RF bus electrodes are configured such that, when the oscillating voltage signal is applied thereto, the one or more RF bus electrodes cause the array of trapping regions to be substantially periodic.

15. The quantum computer of claim 14 , further comprising:
a controller; and
a voltage source, wherein the controller is configured to cause the voltage source to generate the oscillating voltage signal.

16. The quantum computer of claim 14 , further comprising:
a manipulation source; and
one or more optical elements configured to guide a manipulation signal generated by the manipulation source such that the manipulation signal is incident on two or more positions within the substantially periodic array of trapping regions, the two or more positions being at respective same points in the period of the substantially periodic array of trapping regions.

17. The quantum computer of claim 16 , wherein the atomic object confinement apparatus is configured to confine one or more atomic objects and the manipulation signal is configured to perform an operation on at least two of the two or more atomic objects, each of the at least two atomic objects located at a respective one of the two or more positions when the manipulation signal is incident on the two or more positions.

18. The quantum computer of claim 14 , wherein the plurality of RF rail electrodes are disposed in a periodic arrangement, wherein the periodic arrangement is defined at least in part by a tiling cell, and wherein a portion of the one or more RF bus electrodes comprises one or more perimeter cells that are at least partial copies of the tiling cell disposed in the perimeter zone.

19. The quantum computer of claim 14 , wherein the one or more RF bus electrodes comprise a continuous electrode that extends substantially along at least one edge of the perimeter zone.

20. The quantum computer of claim 14 , wherein the one or more RF bus electrodes comprise a plurality of distinct RF bus electrodes.

Assignees

• Quantinuum Llc

Inventors

• Volin Curtis
• Langer Christopher
• Hayes David

Classifications

• G21K1/20 Primary

  for confining charged particles or handling confined charged particles, e.g. ion traps · CPC title

• G06N10/40

  Physical realisations or architectures of quantum processors or components for manipulating qubits, e.g. qubit coupling or qubit control · CPC title

• G21K1/00 Primary

  Arrangements for handling particles or ionising radiation, e.g. focusing or moderating · CPC title

• H04B10/70 Primary

  Photonic quantum communication · CPC title

• G21K1/003 Primary

  Physics · mapped topic