Scalable room temperature quantum information processor

US9317473B2 · kind B2 · utility

Assignee

• President and Fellows of Harvard College · US

Inventors

• Norman Y. Yao · Berkeley, US
• Liang Jiang · Guilford, US
• Alexey Vyacheslavovich Gorshkov · Rockville, US
• Peter Christian Maurer · Boston, US
• Geza Giedke · Garching bei München, DE
• Juan Ignacio Cirac · Garching bei München, DE
• Mikhail D. Lukin · Cambridge, US

Key dates

• Filing date: Dec 14, 2011
• Grant date: Apr 19, 2016
• Expiry date: Oct 18, 2032

Classification

• Technology area (CPC G): Physics
• CPC primary: G06N10/40
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

A quantum information processor (QIP) may include a plurality of quantum registers, each quantum register containing at least one nuclear spin and at least one localized electronic spin. At least some of the quantum registers may be coherently coupled to each other by a dark spin chain that includes a series of optically unaddressable spins. Each quantum register may be optically addressable, so that quantum information can be initialized and read out optically from each register, and moved from one register to another through the dark spin chain, though an adiabatic sequential swap or through free-fermion state transfer. A scalable architecture for the QIP may include an array of super-plaquettes, each super-plaquette including a lattice of individually optically addressable plaquettes coupled to each other through dark spin chains, and separately controllable by confined microwave fields so as to permit parallel operations.