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Spectral control of nonclassical light pulses using an integrated thin-film lithium niobate modulator

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.

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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.

Item Type:Article
Related URLs:
URLURL TypeDescription
Zhu, Di0000-0003-0210-1860
Chen, Changchen0000-0001-7811-1673
Yu, Mengjie0000-0002-7815-4195
Shao, Linbo0000-0002-0615-7848
Hu, Yaowen0000-0002-0127-1959
Xin, C. J.0000-0002-9596-1407
Yeh, Matthew0000-0001-8711-6505
Reimer, Christian0000-0002-8038-7561
Zhang, Mian0000-0001-9838-3895
Lončar, Marko0000-0002-5029-5017
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.
Funding AgencyGrant Number
Harvard Quantum InitiativeUNSPECIFIED
Army Research Office (ARO)W911NF2010248
Air Force Office of Scientific Research (AFOSR)FA9550-20-1-01015
Defense Advanced Research Projects Agency (DARPA)HR0011-20-C-0137
Department of Energy (DOE)DE-SC0020376
Air Force Research Laboratory (AFRL)FA9550-21-1-0056
Agency for Science, Technology and Research (A*STAR)UNSPECIFIED
Natural Sciences and Engineering Research Council of Canada (NSERC)UNSPECIFIED
AQT Intelligent Quantum Networks and Technologies (INQNET)UNSPECIFIED
Record Number:CaltechAUTHORS:20221201-36163000.1
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ID Code:118191
Deposited By: Research Services Depository
Deposited On:23 Dec 2022 18:56
Last Modified:23 Dec 2022 18:56

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