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The ability to transfer entanglement over large distance is a main requirement for quantum networks. Another fundamental ingredient is the storage of such a quantum state in a quantum memory. To this end a useful resource is a photon pair for which one photon is resonant with the memory while its partner is at a low-loss telecommunication wavelength. We recently presented a photon pair source, compatible...
Electro-optical combs generated from continuous-wave sources through amplitude and phase modulations have the potential to generate picosecond pulses with multi-GHz tunable repetition rates. They find applications in polarized Gamma ray production [1], imaging and picosecond acoustics. However, the development of such combs is mainly carried out with 1.5 μm laser sources [2, 3]. Only few developments...
Wavelength tuneable lasers for 40G and 100G coherent optical communications systems need to meet stringent requirements on narrow linewidth emission across the entire tuning range, with typical values of 300–500 kHz required in commercial systems. Higher capacities can be achieved in next generation systems by employing higher order modulation formats such as 16QAM or 64QAM. However, such systems...
The formation of dissipative Kerr solitons in optical microresonators enables fully coherent optical frequency combs with microwave repetition rates. Of particular interest is the single soliton state that exhibits a spectrally smooth sech2 profile imperative for applications such as coherent optical communications, coherent receivers and dual-comb spectroscopy. However, the generation process of...
Fermi Pasta Ulam (FPU) recurrence process is a universal phenomenon that describes the natural return cycle of a nonlinear system into its initial state after experiencing a complex nonlinear coupling dynamics. In optical fibers it has been observed with reference to the nonlinear stage of modulation instability (MI) [1,2], which also plays a key role in supercontinuum and rogue wave formation. However,...
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