TY - JOUR
T1 - Programmable Spatiotemporal Quantum Parametric Mode Sorter
AU - Garikapati, Malvika
AU - Kumar, Santosh
AU - Zhang, He
AU - Sua, Yong Meng
AU - Huang, Yu Ping
N1 - Publisher Copyright:
© 2023 American Physical Society.
PY - 2023/4
Y1 - 2023/4
N2 - We experimentally demonstrate a programmable parametric mode sorter of high-dimensional signals in a composite spatiotemporal Hilbert space through mode-selective quantum frequency up-conversion. As a concrete example and with quantum communication applications in mind, we consider the Laguerre-Gaussian and Hermite-Gaussian modes as the spatial and temporal state basis for the signals, respectively. By modulating the spatiotemporal profiles of the up-conversion pump, we demonstrate the faithful selection of signal photons in those modes and their superposition modes. Our results show an improvement in the quantum mode-sorting performance by coupling the up-converted light into a single-mode fiber and/or operating the up-conversion at the edge of phase matching. Optimizing pump temporal profiles allows us to achieve more than 12-dB extinction for mutually unbiased basis (MUB) sets of the spatiotemporal modes. This fully programmable and efficient system could be a viable resource for quantum communications, quantum computation, and quantum metrology.
AB - We experimentally demonstrate a programmable parametric mode sorter of high-dimensional signals in a composite spatiotemporal Hilbert space through mode-selective quantum frequency up-conversion. As a concrete example and with quantum communication applications in mind, we consider the Laguerre-Gaussian and Hermite-Gaussian modes as the spatial and temporal state basis for the signals, respectively. By modulating the spatiotemporal profiles of the up-conversion pump, we demonstrate the faithful selection of signal photons in those modes and their superposition modes. Our results show an improvement in the quantum mode-sorting performance by coupling the up-converted light into a single-mode fiber and/or operating the up-conversion at the edge of phase matching. Optimizing pump temporal profiles allows us to achieve more than 12-dB extinction for mutually unbiased basis (MUB) sets of the spatiotemporal modes. This fully programmable and efficient system could be a viable resource for quantum communications, quantum computation, and quantum metrology.
UR - http://www.scopus.com/inward/record.url?scp=85158910587&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85158910587&partnerID=8YFLogxK
U2 - 10.1103/PhysRevApplied.19.044070
DO - 10.1103/PhysRevApplied.19.044070
M3 - Article
AN - SCOPUS:85158910587
VL - 19
JO - Physical Review Applied
JF - Physical Review Applied
IS - 4
M1 - 044070
ER -