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- W4365421290 abstract "Frequency-bin qubits possess unique synergies with wavelength-multiplexed lightwave communications, suggesting valuable opportunities for quantum networking with the existing fiber-optic infrastructure. Although the coherent manipulation of frequency-bin states requires highly controllable multi-spectral-mode interference, the quantum frequency processor (QFP) provides a scalable path for gate synthesis leveraging standard telecom components. Here we summarize the state of the art in experimental QFP characterization. Distinguishing between physically motivated ''open box'' approaches that treat the QFP as a multiport interferometer, and ''black box'' approaches that view the QFP as a general quantum operation, we highlight the assumptions and results of multiple techniques, including quantum process tomography of a tunable beamsplitter -- to our knowledge the first full process tomography of any frequency-bin operation. Our findings should inform future characterization efforts as the QFP increasingly moves beyond proof-of-principle tabletop demonstrations toward integrated devices and deployed quantum networking experiments." @default.
- W4365421290 created "2023-04-14" @default.
- W4365421290 creator A5005842047 @default.
- W4365421290 creator A5015666031 @default.
- W4365421290 creator A5030574211 @default.
- W4365421290 creator A5051553808 @default.
- W4365421290 date "2023-11-01" @default.
- W4365421290 modified "2023-10-11" @default.
- W4365421290 title "Characterization of Quantum Frequency Processors" @default.
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- W4365421290 doi "https://doi.org/10.1109/jstqe.2023.3266662" @default.
- W4365421290 hasPublicationYear "2023" @default.