Quantum computing is a technology that uses features of quantum mechanics to compute certain problems much faster than conventional computers and has recently received a great deal of interest. Although the expectations are high, the world will not change right away with the current state of quantum computing due to limited computational performance caused by noise in quantum circuits. Because of this situation, conventional computing techniques called quantum inspired, where the essential quantum phenomena that provide the speedup are emulated by conventional algorithm, are also attracting attention. In this presentation, the quantum computing technologies that NEC is working on as well as technical trends in this field are introduced.