IQUIST Seminar: Alireza Marandi, Caltech

Despite tremendous progress on quantum optics using table-top experiments, in nanophotonics, it remains challenging to generate, manipulate, and measure quantum states with the performance required for a wide range of quantum information systems. Utilizing few-optical-cycle pulses in lithium niobate nanophotonics not only promises a path for addressing this challenge it also enables realization of ultrafast quantum information processors with THz clock rates. In this talk, I will present the experimental progress towards such processors including the recent results on generation and measurement of squeezed states on a single chip with about 5 dB of squeezing and spanning more than 25 THz of bandwidth [1]. I will also overview other important components in nanophotonic LN including intense optical parametric amplifiers [2], ultrafast ultra-low-energy all-optical switches [3], and ultrabroadband coherent sources [4, 5]. I will discuss the ongoing efforts and the outlook towards generation of non-Gaussian states and large-scale quantum nanophotonic circuits.

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