Triply Resonant Photonic Crystal Nanobeam Cavities for Unconditional Photon Blockade

Quantum Physics [Submitted on 20 Mar 2026] Triply Resonant Photonic Crystal Nanobeam Cavities for Unconditional Photon Blockade Richard Dong, Abhinav Kala, Andrew Lingenfelter, Michael S. Polania Vivas, Matthew D. Stearns, Arka Majumdar The development of many scalable quantum technologies requires single-photon nonlinearity, such as single-photon blockade, in solid-state systems. Recently, it has been shown that single-photon Fock states can, in principle, be unconditionally generated using arbitrarily small intrinsic optical nonlinearities in photonic cavities. We investigate the feasibility of such a scheme in achieving photon blockade in an on-chip silicon photonics platform. We show that a triply resonant nanobeam cavity pumped with three monochromatic lasers could achieve such functionalities with quality factors \sim 10^7 and effective mode volumes \sim 10^{-2} \mu m^3, for experimentally feasible incident powers. Using quantum optical simulations, we propose an experimental protocol to generate single photons under this scheme. The constraints on the cavity design and experimental conditions are thoroughly explored to determine feasible regimes of operation. Comments: 9 pages, 4 figures Subjects: Quantum Physics (quant-ph); Optics (physics.optics) Cite as: arXiv:2603.20568 [quant-ph]   (or arXiv:2603.20568v1 [quant-ph] for this version)   https://doi.org/10.48550/arXiv.2603.20568 Focus to learn more Submission history From: Abhinav Kala [view email] [v1] Fri, 20 Mar 2026 23:56:19 UTC (1,429 KB) Access Paper: HTML (experimental) view license Current browse context: quant-ph < prev   |   next > new | recent | 2026-03 Change to browse by: physics physics.optics References & Citations INSPIRE HEP NASA ADS Google Scholar Semantic Scholar Export BibTeX Citation Bookmark Bibliographic Tools Bibliographic and Citation Tools Bibliographic Explorer Toggle Bibliographic Explorer (What is the Explorer?) Connected Papers Toggle Connected Papers (What is Connected Papers?) Litmaps Toggle Litmaps (What is Litmaps?) scite.ai Toggle scite Smart Citations (What are Smart Citations?) Code, Data, Media Demos Related Papers About arXivLabs Which authors of this paper are endorsers? | Disable MathJax (What is MathJax?)