“…Nevertheless, the above methods usually generate time-bandwidth products from a few tens to a few hundred. At present, an arbitrary signal generation scheme based on photon echoes can generate several X. Wang, S. Zhang (Corresponding author), J. Liu, and S. Wang are with the Tianjin Key Laboratory of Film Electronic and Communication Device, School of Integrated Circuit Science and Engineering, Tianjin University of Technology, Tianjin, 300384, China (e-mail: wangxr12138@gmail.com; narrow photon echo pulses with controllable amplitudes and intervals by incident multiple probe or control pulses to compose the target signal [9]- [12]. With the large inhomogeneous broadening absorption line of tens of GHz provided by Tm3+:YAG crystals, the time-bandwidth product can reach 10 5 [13], however, it employs a frequency shift to generate a photon echo train, which reduces the subpulse-width accuracy.…”