{"id":"doi:10.1038/s41586-025-08820-7","kind":"article","title":"A manufacturable platform for photonic quantum computing","authors":["PsiQuantum team","Koen Alexander","Avishai Benyamini","Dylan S. Black","Damien Bonneau","Stanley P. Burgos","Ben M. Burridge","Hugo V. Cable","Geoff Campbell","Gabriel Catalano","Alejandro Ceballos","Chia-Ming Chang","Sourav Sen Choudhury","Chia-Jung Chung","Fariba Danesh","Tom Dauer","Michael W. Davis","Eric F. Dudley","Ping Er-Xuan","Josep M. Fargas Cabanillas","Alessandro Farsi","Colleen S. Fenrich","Jonathan Frazer","Masaya Fukami","Yogeeswaran Ganesan"],"author_count":100,"year":2025,"published":"2025-02-26","venue":"Nature","cited_by":241,"doi":"10.1038/s41586-025-08820-7","arxiv_id":null,"nct_id":null,"source_url":"https://doi.org/10.1038/s41586-025-08820-7","archive_url":"https://space-kitty.com/papers/doi:10.1038/s41586-025-08820-7","updated":null,"pmid":"40010377","pmcid":null,"openalex_id":"W4407956947","pdf_url":null,"abstract":"Abstract Although holding great promise for low noise, ease of operation and networking 1 , useful photonic quantum computing has been precluded by the need for beyond-state-of-the-art components, manufactured by the millions 2–6 . Here we introduce a manufacturable platform 7 for quantum computing with photons. We benchmark a set of monolithically integrated silicon-photonics-based modules to generate, manipulate, network and detect heralded photonic qubits, demonstrating dual-rail photonic qubits with 99.98% ± 0.01% state preparation and measurement fidelity, Hong–Ou–Mandel (HOM) quantum interference between independent photon sources with 99.50% ± 0.25% visibility, two-qubit fusion with 99.22% ± 0.12% fidelity and a chip-to-chip qubit interconnect with 99.72% ± 0.04% fidelity, conditional on photon detection and not accounting for loss. We preview a selection of next-generation technologies: low-loss silicon nitride (SiN) waveguides and components to address loss, as well as fabrication-tolerant photon sources, high-efficiency photon-number-resolving detectors (PNRDs), low-loss chip-to-fibre coupling and barium titanate (BTO) electro-optic phase shifters for high-performance fast switching.","abstract_license":"CC-BY (publisher license, via OpenAlex)","license":"cc-by","is_open_access":true,"retracted":false,"peer_reviewed":null,"categories":["Photonic and Optical Devices"],"details":null,"provenance":"openalex","attribution":"Abstract of \"A manufacturable platform for photonic quantum computing\" by PsiQuantum team, Koen Alexander, Avishai Benyamini et al., https://doi.org/10.1038/s41586-025-08820-7, used under its Creative Commons Attribution license (CC-BY); markup removed, otherwise unmodified.","topics":[{"slug":"photonic-topological-qubits","name":"Photonic, Spin & Topological Qubits","domain_slug":"quantum-computing"}],"cited_in_dossiers":[]}