METHOD OF DETERMINING QUBIT STATE Russian patent published in 2015 - IPC G06N99/00 G06E3/00 

FIELD: measurement technology.

SUBSTANCE: method based on reading of a qubit in several different measurement bases, comprising the impact on the qubit with electromagnetic radiation on transitions between levels of the qubit and some auxiliary level. To read the qubit in the necessary measurement basis, the qubit is affected with bichromatic radiation, the spectral components of which are resonant to transitions from the levels of the qubit to the auxiliary level, the intensity and phases of the spectral components of the bichromatic radiation are set so that to highlight the measurement basis necessary for reading the qubit. The result of reading is determined by recording the excitation of the qubit to the auxiliary level.

EFFECT: increase in measurement accuracy, reduction of measurement time.

4 cl, 5 dwg