标题： 量子网络的无条件纠缠接口 显示英文标题

标题： Unconditional entanglement interface for quantum networks

摘要： 纠缠驱动几乎所有提出的量子信息技术。 通过将1550 nm的双模压缩真空态的一部分上转换为532 nm，我们展示了在相隔较远频率之间生成强连续变量纠缠。 在1550 nm和532 nm场的联合正交测量中观察到了非经典关联，显示出最大噪声抑制低于真空5.5 dB。 我们的通用技术结合了强非经典关联、大带宽，并且原则上能够将通信波长1550 nm与任何光学波长纠缠。 显示英文摘要

摘要： Entanglement drives nearly all proposed quantum information technologies. By up-converting part of a 1550 nm two-mode squeezed vacuum state to 532 nm, we demonstrate the generation of strong continuous-variable entanglement between widely separated frequencies. Nonclassical correlations were observed in joint quadrature measurements of the 1550 and 532 nm fields, showing a maximum noise suppression 5.5 dB below vacuum. Our versatile technique combines strong nonclassical correlations, large bandwidth, and in principle, the ability to entangle the telecommunication wavelength of 1550 nm with any optical wavelength.