Rare-earth doped metal oxide ceramic waveguide quantum memories and methods of manufacturing the same

US11958780B2 · kind B2 · utility

Assignee

• CORNING INCORPORATED · US

Inventors

• Bruce Gardiner Aitken · Corning, US
• Sean Matthew Garner · Elmira, US
• Thomas Dale Ketcham · Big Flats, US
• Daniel Aloysius Nolan · Corning, US
• Jun Yang · Horseheads, US
• Haitao Zhang · Ithaca, US

Key dates

• Filing date: Sep 8, 2022
• Grant date: Apr 16, 2024
• Expiry date: Sep 8, 2042

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B2237/34
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A ceramic waveguide includes: a doped metal oxide ceramic core layer; and at least one cladding layer comprising the metal oxide surrounding the core layer, such that the core layer includes an erbium dopant and at least one rare earth metal dopant being: lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, thulium, ytterbium, lutetium, scandium, or oxides thereof, or at least one non-rare earth metal dopant comprising zirconium or oxides thereof. Also included is a quantum memory including: at least one doped polycrystalline ceramic optical device with the ceramic waveguide and a method of fabricating the ceramic waveguide.