# Fidelity of single qubit gates

*The above picture shows the system which is used to read out and control the state of the qubit. The qubit, depicted as an arrow on the so called Bloch sphere, a common representation of a quantum two-level system, is coupled to microwave photons in a cavity made from a co-planar wave guide. By controlling the phase and amplitude of the photons, the state of the qubit can be manipulated to reach all parts on the Bloch sphere. The graph below shows the error-probability as a function of the time it takes to perform the gate operation.*

The picture shows the system which is used to read out and control the state of the qubit. The qubit, depicted as an arrow on the so called Bloch sphere, a common representation of a quantum two-level system, is coupled to microwave photons in a cavity made from a co-planar wave guide. By controlling the phase and amplitude of the photons, the state of the qubit can be manipulated to reach all parts on the Bloch sphere. The graph below shows the error-probability as a function of the time it takes to perform the gate operation. The work is done together with Yale University. |