Superconducting quantum bit quantum state reading method, device, equipment and medium

• Main Authors: WANG TIANQI, ZHOU HUIDE, LI ZEDONG, PAN WENJIE, LUAN TIAN
• Format: Patent
• Language: Chinese; English
• Published: 24.11.2023
• Subjects: CALCULATING; COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS; COMPUTING; COUNTING; PHYSICS

The invention relates to the field of quantum bit reading, in particular to a superconducting quantum bit quantum state reading method, device and equipment and a medium, and the method comprises the steps: transmitting a reading drive signal to a superconducting quantum chip; the read driving signal is 0gt comprising a superconducting quantum bit; the state resonant frequency is 1gt; a frequency conversion signal of a state resonant frequency; collecting and reading a feedback signal from the superconducting quantum chip; pre-storing 0gt corresponding to the read driving signal according to the read feedback signal; a state response signal and 1gt; and the state response signal determines the quantum state of the superconducting quantum bit through correlation analysis. According to the method, the frequency conversion signal is used as the read driving signal, the sensitivity of the system to frequency-independent noise can be reduced, the signal-to-noise ratio of the signal is improved, correlation calcula