A QFC hub achieves 2 THz pump tunability via a dispersion sweet spot in PPLN and distributes polarization-encoded single photons across 16 ITU-T DWDM channels while preserving quantum information.
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The paper proves sample complexity bounds showing that any efficiently representable unitary can be learned incoherently with arbitrary measurements, but only low-entangling unitaries with shallow-depth measurements, and demonstrates this on a 16-qubit hardware device.
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A quantum frequency conversion hub interfacing with DWDM networks
A QFC hub achieves 2 THz pump tunability via a dispersion sweet spot in PPLN and distributes polarization-encoded single photons across 16 ITU-T DWDM channels while preserving quantum information.
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The power and limitations of learning quantum dynamics incoherently
The paper proves sample complexity bounds showing that any efficiently representable unitary can be learned incoherently with arbitrary measurements, but only low-entangling unitaries with shallow-depth measurements, and demonstrates this on a 16-qubit hardware device.