Zhu, Di and Chen, Changchen and Yu, Mengjie and Shao, Linbo and Hu, Yaowen and Xin, C. J. and Yeh, Matthew and Ghosh, Soumya and He, Lingyan and Reimer, Christian and Sinclair, Neil and Wong, Franco N. C. and Zhang, Mian and Lončar, Marko (2022) Spectral control of nonclassical light pulses using an integrated thin-film lithium niobate modulator. Light: Science & Applications, 11 . Art. No. 327. ISSN 2047-7538. doi:10.1038/s41377-022-01029-7. https://resolver.caltech.edu/CaltechAUTHORS:20221201-36163000.1
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Abstract
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.
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| Additional Information: | We thank Brian J. Smith, Karl Berggren, Marco Colangelo, Marco Turchetti, and Mina Bionta for helpful discussions and assistance in measurement. This work is supported by Harvard Quantum Initiative (HQI), ARO/DARPA (W911NF2010248), AFOSR (FA9550-20-1-01015), DARPA LUMOS (HR0011-20-C-0137), DOE (DE-SC0020376), NSF (EEC-1941583, ECCS-1839197), and AFRL (FA9550-21-1-0056). D.Z. acknowledges support by HQI post-doctoral fellowship and A*STAR SERC Central Research Fund (CRF). N.S. acknowledges support by the AQT Intelligent Quantum Networks and Technologies (INQNET) research program. Device fabrication was performed at the Harvard University Center for Nanoscale Systems. | ||||||||||||||||||||||||
| Group: | INQNET | ||||||||||||||||||||||||
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| DOI: | 10.1038/s41377-022-01029-7 | ||||||||||||||||||||||||
| Record Number: | CaltechAUTHORS:20221201-36163000.1 | ||||||||||||||||||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20221201-36163000.1 | ||||||||||||||||||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||||||||||||||||||||
| ID Code: | 118191 | ||||||||||||||||||||||||
| Collection: | CaltechAUTHORS | ||||||||||||||||||||||||
| Deposited By: | Research Services Depository | ||||||||||||||||||||||||
| Deposited On: | 23 Dec 2022 18:56 | ||||||||||||||||||||||||
| Last Modified: | 23 Dec 2022 18:56 |
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