论文标题
20模式通用量子光子处理器
20-Mode Universal Quantum Photonic Processor
论文作者
论文摘要
集成光子学是光学量子计算的重要技术。通用，相稳定的，可重构的多模干涉仪（量子光子处理器）可以操纵光子量子状态，并且是各种体系结构中光子量子计算机的主要组件之一。在本文中，我们报告了迄今为止最大的量子光子处理器的实现。该处理器在其20个输入模式上实现任意单位转换，其振幅保真度为$ f _ {\ text {haar}} = 97.4 \％$和$ f _ {\ text {pers}} = 99.5 \％$ for haar-random and nod and optical and optical and 2.9 db s of optical的损失，量子干扰$ v _ {\ text {hom}} = 98 \％$。处理器以$ \ mathrm {si_3n_4} $ waveGuides实现，并由毛皮元素积极冷却。
Integrated photonics is an essential technology for optical quantum computing. Universal, phase-stable, reconfigurable multimode interferometers (quantum photonic processors) enable manipulation of photonic quantum states and are one of the main components of photonic quantum computers in various architectures. In this paper, we report the realization of the largest quantum photonic processor to date. The processor enables arbitrary unitary transformations on its 20 input modes with an amplitude fidelity of $F_{\text{Haar}} = 97.4\%$ and $F_{\text{Perm}} = 99.5\%$ for Haar-random and permutation matrices, respectively, an optical loss of 2.9 dB averaged over all modes, and high-visibility quantum interference with $V_{\text{HOM}}=98\%$. The processor is realized in $\mathrm{Si_3N_4}$ waveguides and is actively cooled by a Peltier element.
