Woon Siong Gan’s "Quantum Acoustical Imaging," published by Springer Nature in 2022, is a commercial textbook that utilizes phonon entanglement to surpass classical diffraction limits. Key technologies detailed include SASER (sound amplification by stimulated emission of radiation) and nanometer-scale imaging using AFAM and UFM. Purchase or explore institutional access through Springer Nature . Quantum Acoustical Imaging | Springer Nature Link