Time sequence control system suitable for photon number absolute calibration

The invention discloses a time sequence control system suitable for photon number absolute calibration. The time sequence control system comprises a standard clock source, a calibration chamber clock source, a delayer, a laser and a telescope. The standard clock source is respectively connected with the calibration room clock source and the telescope; the delayer is respectively connected with the calibration chamber clock source and the laser; the calibration room clock source carries out clock synchronization according to the standard clock source, and the delayer sends out a trigger signal under the control of the calibration room clock source so as to control the laser emission time of the laser. According to the invention, internal triggering or external triggering of the laser can be realized; in order to enable the WFCTA system to have the same clock so as to find laser cases from a telescope, calibrated GPS signals are adopted to externally trigger lasers, each laser is subjected to external trigger s