Reducing the number of input lines to superconducting quantum processors installed inside dilution refrigerators

Patent metadata

Field	Value
Publication number	US-10043136-B1
Application number	US-201715782544-A
Country	US
Kind code	B1
Filing date	Oct 12, 2017
Priority date	Oct 12, 2017
Publication date	Aug 7, 2018
Grant date	Aug 7, 2018

Abstract

A technique relates to a router. The router includes a qubit signal distributor, a readout signal distributor, and diplexers communicatively coupled to the qubit signal distributor and the readout signal distributor.

First claim

What is claimed is:

1. A router comprising:
a qubit signal distributor;
a readout signal distributor; and
diplexers communicatively coupled to the qubit signal distributor and the readout signal distributor.

2. The router of claim 1 , wherein the qubit signal distributor is configured to be communicatively coupled to a qubit input line.

3. The router of claim 1 , wherein the readout signal distributor is configured to communicatively couple to a readout input line.

4. The router of claim 1 , wherein the diplexers are configured to communicatively couple the qubit signal distributor and the readout signal distributor to quantum processors.

5. The router of claim 1 , wherein the qubit signal distributor and the readout signal distributor require fewer qubit input and readout input lines communicatively coupled to quantum processors than without use of the qubit signal and readout signal distributors.

6. The router of claim 1 , further comprising a wideband diplexer communicatively coupled to an input side of the qubit signal distributor and the readout signal distributor.

7. The router of claim 6 , wherein the wideband diplexer is configured to communicatively couple to a combination qubit input and readout input line.

8. A method of configuring a router, the method comprising:
providing a qubit signal distributor and a readout signal distributor; and
configuring diplexers to be communicatively coupled to the qubit signal distributor and the readout signal distributor.

9. The method of claim 8 , wherein the qubit signal distributor is configured to communicatively couple to a qubit input line.

10. The method of claim 8 , wherein the readout signal distributor is configured to communicatively couple to a readout input line.

11. The method of claim 8 , wherein the diplexers are configured to communicatively couple the qubit signal distributor and the readout signal distributor to quantum processors.

12. The method of claim 8 , wherein the qubit signal distributor and the readout signal distributor require fewer qubit input and readout input lines compared to communicatively coupling to quantum processors without the qubit signal and readout signal distributors.

13. The method of claim 8 , wherein a wideband diplexer is configured to be communicatively coupled to an input side of the qubit signal distributor and the readout signal distributor.

14. The method of claim 13 , wherein the wideband diplexer is configured to connect to a combination qubit input and readout input line.

15. A router comprising:
a qubit signal distributor; and
a readout signal distributor, wherein the qubit signal distributor and the readout signal distributor are each communicatively coupled to respective quantum processors.

16. The router of claim 15 , wherein:
the qubit signal distributor is configured to communicatively couple to a qubit input line; and
the readout signal distributor is configured to communicatively couple to a readout input line.

17. The router of claim 15 , wherein the qubit signal distributor and the readout signal distributor require fewer qubit input and readout input lines communicatively coupled to the quantum processors than without use of the qubit signal and readout signal distributors.

18. The router of claim 15 , further comprising a wideband diplexer communicatively coupled to an input side of the qubit signal distributor and the readout signal distributor, wherein the wideband diplexer is configured to communicatively couple to a combination qubit input and readout input line.

19. A method of configuring a router, the method comprising:
providing a qubit signal distributor and a readout signal distributor; and
configuring the qubit signal distributor and the readout signal distributor to be separately connectable to respective quantum processors.

20. The method of claim 19 , wherein:
the qubit signal distributor is configured to communicatively couple to a qubit input line; and
the readout signal distributor is configured to communicatively couple to a readout input line.

21. The method of claim 19 , wherein the qubit signal distributor and the readout signal distributor require fewer qubit input and readout input lines communicatively coupled to the quantum processors than without use of the qubit signal and readout signal distributors.

22. The method of claim 19 , wherein:
a wideband diplexer is communicatively coupled to an input side of the qubit signal distributor and the readout signal distributor; and
the wideband diplexer is configured to communicatively couple to a combination qubit input and readout input line.

23. A method for a router, the method comprising:
receiving qubit signals by a qubit signal distributor;
receiving readout signals by a readout signal distributor; and
distributing the qubit signals and the readout signals to quantum processors.

24. The method of claim 23 , wherein distributing the qubit signals and the readout signals to the quantum processors comprises distributing the qubit signals and the readout signals to diplexers from the qubit signal distributor and the readout signal distributor such that the diplexers provide the qubit signals and the readout signals to the quantum processors.

25. The method of claim 23 further comprising receiving a combination of the qubit signals and the readout signals by a wideband diplexer such that the wideband diplexer distributes the qubit signals to the qubit signal distributor and distributes the readout signals to the readout signal distributor.

Assignees

• IBM

Inventors

• Abdo Baleegh

Classifications

• H01B12/02

  characterised by their form · CPC title

• H04J1/02

  Details · CPC title

• F25B9/12

  using 3He-4He dilution · CPC title

• G06N99/002 Primary

  Physics · mapped topic

• G06N10/40 Primary

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