Spatiotemporal mode-selective quantum frequency converter

Santosh Kumar, He Zhang, Prajnesh Kumar, Malvika Garikapati, Yong Meng Sua, Yu Ping Huang

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

We experimentally demonstrate a mode-selective quantum frequency converter over a compound spatiotemporal Hilbert space. We show that our method can achieve high extinction for high-dimensional quantum state tomography by selectively upconverting the signal modes with a modulated and delayed pump. By preparing the pump in optimized modes through adaptive feedback control, selective frequency conversion is demonstrated with up to 30 dB extinction. The simultaneous operations over high-dimensional degrees of freedom in both spatial and temporal domains can serve as a viable resource for photon-efficient quantum communications and computation.

Original languageEnglish
Article number023506
JournalPhysical Review A
Volume104
Issue number2
DOIs
StatePublished - Aug 2021

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