Ultrafast single-photon detection using nanophotonic parametric amplifiers
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arXiv
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| Format: | Preprint |
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2024
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| author | Sendonaris, Elina Williams, James Nehra, Rajveer Gray, Robert Sekine, Ryoto Ledezma, Luis Marandi, Alireza |
| author_facet | Sendonaris, Elina Williams, James Nehra, Rajveer Gray, Robert Sekine, Ryoto Ledezma, Luis Marandi, Alireza |
| contents | 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_18397 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Ultrafast single-photon detection using nanophotonic parametric amplifiers Sendonaris, Elina Williams, James Nehra, Rajveer Gray, Robert Sekine, Ryoto Ledezma, Luis Marandi, Alireza Optics Quantum Physics 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. |
| title | Ultrafast single-photon detection using nanophotonic parametric amplifiers |
| topic | Optics Quantum Physics |
| url | https://arxiv.org/abs/2410.18397 |