Random numbers are widely used for information security, cryptography, stochastic modeling, and quantum simulations. Key technical challenges for physical random number generation are speed and scalability. We demonstrate a method for ultrafast generation of hundreds of random bit streams in parallel with a single laser diode. Spatiotemporal interference of many lasing modes in a specially designed cavity is introduced as a scheme for greatly accelerated random bit generation. Spontaneous emission, caused by quantum fluctuations, produces stochastic noise that makes the bit streams unpredictable. We achieve a total bit rate of 250 terabits per second with off-line postprocessing, which is more than two orders of magnitude higher than the current postprocessing record. Our approach is robust, compact, and energy-efficient, with potential applications in secure communication and high-performance computation.

随机数被广泛用于信息安全，密码学，随机建模和量子模拟。物理随机数生成的关键技术挑战是速度和可伸缩性。我们演示了一种与单个激光二极管并行超快生成数百个随机位流的方法。引入了在专门设计的腔中的多种激光模式的时空干涉，作为极大加速随机位生成的方案。由量子涨落引起的自发发射会产生随机噪声，使比特流无法预测。离线后处理可实现每秒250 TB的总比特率，比当前的后处理记录高出两个数量级。我们的方法坚固，紧凑且节能，