Extended coherence and single-shot readout of a silicon-vacancy spin in diamond

US11074520B2 · kind B2 · utility

Assignee

• President and Fellows of Harvard College · US

Inventors

• Denis Sukachev · Brookline, US
• Alp Sipahigil · Pasadena, US
• Christian Thieu Nguyen · Cambridge, US
• Mihir Keshav Bhaskar · Cambridge, US
• Ruffin Evans · Cambridge, US
• Mikhail D. Lukin · Cambridge, US

Key dates

• Filing date: Aug 10, 2018
• Grant date: Jul 27, 2021
• Expiry date: Aug 10, 2038

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10D62/8303
• WIPO field: Micro-structural and nano-technology
• WIPO sector: Chemistry

Abstract

Systems and methods are disclosed for preparing and evolving atomic defects in diamond. Silicon vacancy spins may be cooled to temperatures equal to or below 500 mK to reduce the influence of phonons. The cooling, manipulation, and observation systems may be designed to minimize added heat into the system. A CPMG sequence may be applied to extend coherence times. Coherence times may be extended, for example, to 13 ms.