Method for operating a quantum register

A method for operating a quantum register, comprising the following steps:

• carrying out of a first read-out process, so that first data representing a first state of the quantum register are ascertained;
• carrying out a first control of the quantum register, which is in the first state, in accordance with at least one quantum gate;
• carrying out of a second read-out process, so that second data representing a second state of the quantum register which results from the first control are ascertained;
• adjusting at least one parameter of the at least one quantum gate using the first data and the second data or optimizing a target function which is dependent on the first data and on the second data;
• and
• carrying out a second control of the quantum register in accordance with the at least one quantum gate, which results from the adjusting.

A control device configured to operate a quantum register, the control device configured to:

• carry out of a first read-out process, so that first data representing a first state of the quantum register are ascertained;
• carry out a first control of the quantum register, which is in the first state, in accordance with at least one quantum gate;
• carry out of a second read-out process, so that second data representing a second state of the quantum register which results from the first control are ascertained;
• adjust at least one parameter of the at least one quantum gate using the first data and the second data or optimizing a target function which is dependent on the first data and on the second data;
• and
• carrying out a second control of the quantum register in accordance with the at least one quantum gate, which results from the adjusting.

A non-transitory computer-readable medium on which are stored instructions for operating a quantum register, the instructions, when executed by a processor, causing the processor to perform the following steps:

• carrying out of a first read-out process, so that first data representing a first state of the quantum register are ascertained;
• carrying out a first control of the quantum register, which is in the first state, in accordance with at least one quantum gate;
• carrying out of a second read-out process, so that second data representing a second state of the quantum register which results from the first control are ascertained;
• adjusting at least one parameter of the at least one quantum gate using the first data and the second data or optimizing a target function which is dependent on the first data and on the second data;
• and
• carrying out a second control of the quantum register in accordance with the at least one quantum gate, which results from the adjusting.