Patent US10454459

Quantum controller with multiple pulse modes
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US10454459

1. A system comprising: (8) (1)

a quantum controller comprising a first raw outbound quantum control pulse generation circuit, a second raw outbound quantum control pulse generation circuit, and an outbound quantum control pulse modification circuit, wherein: the first raw outbound quantum control pulse generation circuit is operable to generate a first raw outbound quantum control pulse;

the second raw outbound quantum control pulse generation circuit is operable to generate a second raw outbound quantum control pulse;

the outbound quantum control pulse modification circuit is operable to: dynamically determine whether to process the first raw outbound quantum control pulse and the second raw outbound quantum control pulse as a multi-pulse pair to be mixed together or as two independent pulses; and

process the first raw outbound quantum control pulse and/or the second raw outbound quantum control pulse as determined.

2. The system of claim 1, wherein the dynamic determination of whether to process the first raw outbound quantum control pulse and the second raw outbound quantum control pulse as a multi-pulse pair or as two independent pulses is based on to which one or more signal paths and/or quantum elements the first raw outbound quantum control pulse and the second raw outbound quantum control pulse are to be routed. (0)

3. The system of claim 1, wherein the outbound quantum control pulse modification circuit is operable to, when the first raw outbound quantum control pulse and the second raw outbound quantum control pulse are to be processed as a multi-pulse pair: (0) (2)

4. The system of claim 1, wherein: (0) (2)

5. The system of claim 1, wherein the outbound quantum control pulse modification circuit is: (2) (2)

operable to store a plurality of pulse modification settings; and

dynamically configurable such that which of the plurality of pulse modification settings is applied to the first raw outbound quantum control pulse, and which of the plurality of pulse modification settings is applied to the second raw outbound quantum control pulse, is selectable during execution of instructions of a quantum computing algorithm by the quantum controller.

6. The system of claim 5, wherein each pulse modification setting of the plurality of pulse modification settings is configured for use with a respective one of a plurality of signal paths onto which the first raw outbound quantum control pulse and/or the second raw outbound quantum control pulse can be routed. (1) (0)

7. The system of claim 5, wherein each pulse modification setting of the plurality of pulse modification settings is configured for use with a respective one or more of a plurality of quantum elements to which the first raw outbound quantum control pulse and/or the second raw outbound quantum control pulse can be routed. (0)

9. The system of claim 1, wherein the outbound quantum control pulse modification circuit is operable to: (0) (2)

10. The system of claim 1, wherein the outbound quantum control pulse modification circuit is operable to: (0) (2)

in instances that the first raw outbound quantum control pulse and the second raw outbound quantum control pulse are to be processed as two independent pulses: process the first raw outbound quantum control pulse using a first pulse modification setting to perform frequency, phase and/or amplitude modulation corresponding to a first quantum element or quantum transition; and

process the second raw outbound quantum control pulse using a second pulse modification setting to perform frequency, phase and/or amplitude modulation corresponding to a second quantum element or quantum transition; and

in instances that the first raw outbound quantum control pulse and the second raw outbound quantum control pulse are to be processed as a multi-pulse pair to be mixed together: process the first raw outbound quantum control pulse and the second raw outbound quantum control pulse using a third pulse modification setting to perform frequency modulation, phase modulation, frame-of-reference rotation, and/or a linear transformation on a vector representation of the first raw outbound quantum control pulse and the second raw outbound quantum control pulse.

11. The system of claim 1, wherein the dynamic determination of whether to process the first raw outbound quantum control pulse and the second raw outbound quantum control pulse as a multi-pulse set to be mixed together or as two independent pulses is based on real-time calculations performed by the first raw outbound quantum control pulse generation circuit and/or the second raw outbound quantum control pulse generation circuit. (1) (0)

13. The system of claim 1, comprising output manager circuitry operable to: (0) (2)

14. A system comprising: (4) (1)

the second raw outbound quantum control pulse generation circuit is operable to generate a third raw outbound quantum control pulse; generate a fourth raw outbound quantum control pulse;

the outbound quantum control pulse modification circuit is operable to: dynamically determine to process the first raw outbound quantum control pulse and the third raw outbound quantum control pulse as a multi-pulse pair to be mixed together;

dynamically determine to process the second raw outbound quantum control pulse and the fourth raw outbound quantum control pulse as two independent pulses; and

process the first, second, third, and fourth raw outbound quantum pulses as determined to generate first, second, third, and fourth outbound quantum control pulses.

15. The system of claim 14, comprising output manager circuitry operable to: (0) (4)

route the first outbound quantum control pulse to a first signal path;

route the second outbound quantum control pulse onto a second signal path;

route the third outbound quantum control pulse onto a third signal path; and

route the fourth outbound quantum control pulse onto a fourth signal path.

16. The system of claim 14, comprising output manager circuitry operable to: (0) (4)

route the first outbound quantum control pulse to a first quantum element;

route the second outbound quantum control pulse onto a second quantum element;

route the third outbound quantum control pulse onto a third quantum element; and

route the fourth outbound quantum control pulse onto a fourth quantum element.

17. The system of claim 14, wherein: (0) (2)

18. The system of claim 14, wherein: (0) (1)

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Patent US10454459

Quantum controller with multiple pulse modes

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