{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9729152","patent":{"patent_number":"US-9729152","title":"Reducing spontaneous emission in circuit quantum electrodynamics by a combined readout and filter technique","assignee":null,"inventors":[],"filing_date":"2016-07-25T00:00:00.000Z","publication_date":"2017-08-08T00:00:00.000Z","cpc_codes":["B82Y","G06N","G06N"],"num_claims":20,"abstract":"A mechanism relates a superconductor circuit. A Δ circuit includes a first node connecting a Purcell capacitor to a qubit coupling capacitor, a second node connecting the Purcell capacitor to a readout coupling capacitor, and a third node connecting the qubit coupling capacitor to the readout coupling capacitor. A qubit is connected to the first node and has a qubit frequency. A readout resonator connects to the third node combining with the Purcell capacitor to form a filter. Capacitance of the Purcell capacitor is determined as a factor of the qubit frequency of the qubit and blocks emissions of the qubit at the qubit frequency. Capacitance of the Purcell capacitor causes destructive interference, between a first path containing Purcell capacitor and a second path containing both the qubit coupling capacitor and readout coupling capacitor, in order to block emissions of the qubit at the qubit frequency to the external environment."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Reducing spontaneous emission in circuit quantum electrodynamics by a combined readout and filter technique","description":"A mechanism relates a superconductor circuit. A Δ circuit includes a first node connecting a Purcell capacitor to a qubit coupling capacitor, a second node connecting the Purcell capacitor to a readou","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9729152","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-9729152","citation_suggestion":"Patentable. \"Reducing spontaneous emission in circuit quantum electrodynamics by a combined readout and filter technique\" (US-9729152). https://patentable.app/patents/US-9729152","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9729152","json":"https://patentable.app/api/llm-context/US-9729152","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T17:45:22.611Z"}