Kavli Affiliate: Alireza Marandi
| First 5 Authors: Elina Sendonaris, James Williams, Rajveer Nehra, Robert Gray, Ryoto Sekine
| Summary:
Integrated photonic quantum information processing (QIP) has advanced rapidly
due to progress in various nanophotonic platforms. Single photon detectors have
been the subject of intense study due to their ubiquity in QIP systems, yet
many state-of-the art detectors operate at cryogenic temperatures under vacuum
and suffer from long dead times. We propose and demonstrate a single photon
detection scheme based on optical parametric amplification in nanophotonic
lithium niobate (LN) combined with a classical photodetector. We use quantum
detector tomography and experimentally demonstrate an efficiency of 26.5% with
a 2.2% dark count rate. We show that by improving the nonlinearity-to-loss
ratio in nanophotonics and using homodyne detection on a squeezed pump, the
detector can achieve 69% efficiency with 0.9% dark count rate. The detector
operates at room temperature, has no intrinsic dead time, and is readily
integrated in LN nanophotonics, in which many other components of photonic QIP
are available. Our results represent a step towards all-optical ultrafast
photon detection for scalable nanophotonic QIP.
| Search Query: ArXiv Query: search_query=au:”Alireza Marandi”&id_list=&start=0&max_results=3