Single-Photon Generation, Storage, Synchronization, and Interaction in Hot Atomic Vapor
Complex quantum states of light, containing many photons entangled over many modes, are important for a variety of quantum technology applications, from demonstrations of quantum advantage, through super-sensitive metrology, to measurement-based quantum computation. The creation of such states in a scalable manner has been, and to a large extent, still is, a standing scientific and engineering challenge.
In this talk, I will present our continuing work toward the creation of such complex quantum states of light using a relatively simple and potentially scalable system: a set of atomic vapor cells at or above room temperature. I will discuss our implementations of two of the three necessary components for such a feat: a noise-free quantum memory [1,2] and two identical, memory-compatible single-photon sources . I'll also present very recent results demonstrating active synchronization of the photon sources by using the memory. Finally, I'll discuss our path toward the third ingredient, a few-photon-level non-linear component.
1. R. Finkelstein et al., Science Advances 4, eaap8598 (2018)
2. R. Finkelstein et al., Phys. Rev. X 11, 011008 (2021)
3. O. Davidson et al., New J. Phys. 23, 073050 (2021)
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