| 6 | Spectral control of nonclassical light pulses using an integrated thin-film lithium niobate modulator显示文摘Manipulating the frequency and bandwidth of nonclassical light is essential for implementing frequency-encoded/multiplexed quantum computation,communication,and networking protocols,and for bridging spectral mismatch among various quantum systems.However,quantum spectral control requires a strong nonlinearity mediated by light,microwave,or acoustics,which is challenging to realize with high efficiency,low noise,and on an integrated chip.Here,we demonstrate both frequency shifting and bandwidth compression of heralded single-photon pulses using an integrated thin-film lithium niobate(TFLN)phase modulator.We achieve record-high electro-optic frequency shearing of telecom single photons over terahertz range(±641 GHz or±5.2 nm),enabling high visibility quantum interference between frequency-nondegenerate photon pairs.We further operate the modulator as a time lens and demonstrate over eighteen-fold(6.55 nm to 0.35 nm)bandwidth compression of single photons.Our results showcase the viability and promise of on-chip quantum spectral control for scalable photonic quantum information processing. | Di Zhu Changchen Chen Mengjie Yu Linbo Shao Yaowen Hu CJXin Matthew Yeh Soumya Ghosh Lingyan He Christian Reimer Neil Sinclair Franco N.C.Wong Mian Zhang Marko Loncar | 2022 | Light(Science & Applications)2022，11，12： | 0 |
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