论文标题
光子晶体纤维中的超量子频率转换
Ultratunable quantum frequency conversion in photonic crystal fiber
论文作者
论文摘要
波长之间的单光子在波长之间的量子频率转换是实现广泛的量子网络的关键推动器。我们演示了在组 - 速度 - 对称的光子晶体纤维（PCF）中，预示着1551 nm光子的量子频率转换为超子（1226-1408 nm）范围内的任何波长，覆盖超过150个独立的频率bin。目标波长仅通过单个泵激光波长来控制。我们发现内部和总转化效率分别为12（1）％和1.4（2）％。对于将1551 nm转换为1300 nm的情况，我们测量了一个预示的$ g^{（2）}（0）= 0.25（6）$，用于从带有$ g^{（2）}（2）}（0）= 0.034（8）$的输入的转换光的转换光。我们希望该PCF可用于无数的量子网络任务。
Quantum frequency conversion of single photons between wavelength bands is a key enabler to realizing widespread quantum networks. We demonstrate the quantum frequency conversion of a heralded 1551 nm photon to any wavelength within an ultrabroad (1226 - 1408 nm) range in a group-velocity-symmetric photonic crystal fiber (PCF), covering over 150 independent frequency bins. The target wavelength is controlled by tuning only a single pump laser wavelength. We find internal, and total, conversion efficiencies of 12(1)% and 1.4(2)%, respectively. For the case of converting 1551 nm to 1300 nm we measure a heralded $g^{(2)}(0) = 0.25(6)$ for converted light from an input with $g^{(2)}(0) = 0.034(8)$. We expect that this PCF can be used for a myriad of quantum networking tasks.
