Techniques for coupling qubits to acoustic resonators and related systems and methods

US11017310B2 · kind B2 · utility

Assignee

• Yale University · US

Inventors

• Yiwen Chu · Cambridge, US
• Prashanta Kharel · Cambridge, US
• William Renninger · New Haven, US
• Luke Burkhart · New Haven, US
• Luigi Frunzio · North Haven, US
• Peter Rakich · New Haven, US
• Robert J. Schoelkopf, III · Madison, US

Key dates

• Filing date: Feb 28, 2018
• Grant date: May 25, 2021
• Expiry date: May 28, 2038

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B82Y20/00
• WIPO field: Micro-structural and nano-technology
• WIPO sector: Chemistry

Abstract

Techniques for operating a mechanical oscillator as a quantum memory are described. According to some aspects, a qubit may be coupled to a piezoelectric material such that the electric field of the qubit causes stress within the piezoelectric material. The piezoelectric material may be in contact with a crystalline substrate forming an acoustic resonator such that the qubit couples to bulk acoustic waves in the crystalline substrate via its interaction with the piezoelectric material. According to some aspects, application of a suitable electromagnetic pulse to the qubit may cause an exchange of energy from the qubit to the acoustic phonon system and thereby transfer quantum information from the qubit to the phonon system.