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Angularly multimode holographic atomic memory as a time-delayed single and multiple photons generator

Construction of on-demand sources of desired quantum states of light remains an overarching goal for quantum engineering. While single photons are essential resource for quantum communication protocols, multiple photon states offer an avenue for quantum computing with linear optics and quantum simulations, e.g. in boson sampling schemes. Since scientists are already able to manufacture complex photonic chips using femtosecond writing technologies, perhaps the last major roadblock to perform linear-optics simulations unattainable by classical computing is the ability to create large number of photons capable of non-classical interference.