Patent ID: 11909395
Assignee: IQM FINLAND OY
Field: Basic communication processes (Electrical engineering)
Classification: CPC G  H  B | IPC B  G  H

Claim 0:
1. An arrangement for reading out a state of a qubit, the arrangement comprising:
an information storage element for storing the state of the qubit;
a readout resonator electromagnetically coupled to said information storage element;
an excitation port for injecting excitation waveforms to the information storage element for affecting the state of the qubit;
one or more readout ports for injecting readout input waveforms to a system comprising said information storage element and said readout resonator, and for extracting readout output waveforms from the system;
a readout waveform source for generating said readout input waveforms; and
a readout waveform detector for detecting said readout output waveforms;
wherein said readout waveform source is configured to inject said readout input waveforms into the system simultaneously both through said excitation port and through a first readout port of said one or more readout ports, said first readout port being different than said excitation port, and
wherein said readout waveform source is configured to controllably shift a phase of a readout input waveform in the course of injecting it into the system.