Adjustment of qubit frequency through annealing

Patent metadata

Field	Value
Publication number	US-10833242-B2
Application number	US-201916520490-A
Country	US
Kind code	B2
Filing date	Jul 24, 2019
Priority date	Nov 28, 2017
Publication date	Nov 10, 2020
Grant date	Nov 10, 2020

Abstract

A structure including a plurality of laser discharge structures located on a planar lightwave circuit, and a single laser source connected to each of the plurality of laser discharge structures by one or more Mach Zehnder switches and a plurality of optical connections.

First claim

What is claimed is:

1. A planar lightwave circuit for adjusting qubit frequency, the circuit comprising:
a plurality of laser discharge structures located on the planar lightwave circuit, wherein a position of each of the plurality of laser discharge structures on the planar lightwave circuit corresponds with a position of each of a plurality of qubits on a chip; and
a single laser source connected to each of the plurality of laser discharge structures by one or more Mach Zehnder switches and a plurality of optical connections.

2. The structure of claim 1 , further comprising:
a controller to control the direction of an optical input from the single laser source flows through the one or more Mach Zehnder switches.

3. The structure of claim 1 , wherein the single laser source is connected to an input of a single Mach Zehnder switch by a mode converter and one of the plurality of optical connections.

4. The structure of claim 1 , wherein at least one of the plurality of laser discharge structures is connected to the single laser source by two or more Mach Zehnder switches and the plurality of optical connections.

5. The structure of claim 1 , wherein two of the plurality of laser discharge structures are directly connected to a single Mach Zehnder switch.

6. The structure of claim 1 , wherein each of the one or more Mach Zehnder switches comprises one input and two outputs.

7. The structure of claim 1 , wherein each of the plurality of laser discharge structures is a vertical grating coupler.

8. The structure of claim 1 , wherein each of the plurality of optical connections comprises an optical fiber.

9. A structure comprising:
a plurality of laser discharge structures located on a planar lightwave circuit, wherein a position of each of the plurality of laser discharge structures on the planar lightwave circuit corresponds with a position of each of a plurality of qubits on a chip; and
a single laser source connected to each of the plurality of laser discharge structures by one or more Mach Zehnder switches and a plurality of optical connections, wherein the single laser source is connected to an input of a single Mach Zehnder switch by a mode converter and one of the plurality of optical connections.

10. The structure of claim 9 , wherein at least one of the plurality of laser discharge structures is connected to the single laser source by two or more Mach Zehnder switches and the plurality of optical connections.

11. The structure of claim 9 , wherein two of the plurality of laser discharge structures are directly connected to a single Mach Zehnder switch.

12. The structure of claim 9 , wherein each of the one or more Mach Zehnder switches comprises one input and two outputs.

13. The structure of claim 9 , wherein each of the plurality of laser discharge structures is a vertical grating coupler.

14. A structure comprising:
a plurality of laser discharge structures located on a planar lightwave circuit, wherein a position of each of the plurality of laser discharge structures on the planar lightwave circuit corresponds with a position of each of a plurality of qubits on a chip;
a single laser source connected to each of the plurality of laser discharge structures by one or more Mach Zehnder switches and a plurality of optical connections; and
a controller to control the direction an optical input from the single laser source flows through the one or more Mach Zehnder switches.

15. The structure of claim 14 , wherein the single laser source is connected to an input of a single Mach Zehnder switch by a mode converter and one of the plurality of optical connections.

16. The structure of claim 14 , wherein at least one of the plurality of laser discharge structures is connected to the single laser source by two or more Mach Zehnder switches and the plurality of optical connections.

17. The structure of claim 14 , wherein two of the plurality of laser discharge structures are directly connected to a single Mach Zehnder switch.

18. The structure of claim 14 , wherein each of the one or more Mach Zehnder switches comprises one input and two outputs.

19. The structure of claim 14 , wherein each of the plurality of laser discharge structures is a vertical grating coupler.

Assignees

• IBM

Inventors

• Orcutt Jason S
• Rosenblatt Sami

Classifications

• G02B6/34

  utilising prism or grating {(G02B6/293 takes precedence)} · CPC title

• G02B6/354

  Switching arrangements, i.e. number of input/output ports and interconnection types · CPC title

• H01L39/2493

  Electricity · mapped topic

• H01L27/18

  Electricity · mapped topic

• H01L39/249 Primary

  Electricity · mapped topic