Patent ID: 11959984
Assignee: QUANTUM VALLEY INVESTMENT FUND LP
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A method for controlling a spin system in an external magnetic field, the method comprising:
selecting a target operation to be performed on the spin system;
generating, by operation of a computing system, a sequence of parameters that represent the selected target operation and define a control sequence for a resonator, the control sequence comprising successive pairs of first and second pulses and corresponding to a shaped pulse that:
suppresses hysteretic effects of the resonator by driving a magnetic field produced by the resonator to zero at the beginning and end of each successive pair of first and second pulses, and
provides control that is insensitive to variations in parameters of the resonator by maintaining the magnetic field in a transient state;

sending the successive pairs of first and second pulses to the resonator by alternately:
sending a first pulse to the resonator over a first period, and
sending a second pulse to the resonator over a second period immediately following the first period;

generating a magnetic field from the resonator in response to receiving the successive pairs of first and second pulses, the magnetic field applied by the resonator to the spin system; and
altering a magnitude of the generated magnetic field to zero in response to each second pulse, the magnitude of the generated magnetic field altered by the resonator;
wherein the first pulse maintains the magnetic field in a transient state during the first period.