Harvard College

University System of Maryland

North Carolina State University

The Mitre Corporation

Matthew James Turner

Ronald Lee Walsworth

John Francis Barry

Jennifer May Schloss

Matthew Scot Rosen

Marko Loncar

David Glenn

Thomas Theis

Dominik Bucher

Nithya Arunkumar

Connor A Hart

Erik Bauch

Mikael Paul Backlund

Edlyn Victoria Levine

Pauli Kehayias

Daniel T Walters

Nicholas Ryan Langellier

Systems and methods of quantum sensing include depositing a sample volume onto an ensemble of quantum defects, hyperpolarizing spins in the sample volume, performing a sensing sequence, and reading out information regarding electronic spin states of the quantum defects in the ensemble of quantum defects, which sense the hyperpolarized spins in the sample volume.

Systems and methods for quantum sensing with signal amplification by reversible exchange

Devices for determining a state of a magnetic field-generating article are provided. In various embodiments, a device comprises: a single crystal diamond having a plurality of NV centers, the single crystal diamond configured to be disposed adjacent to a magnetic field-generating article, and configured to generate a fluorescent signal in response to being illuminated by a light source; a coherent light source configured to generate a light beam directed at the single crystal diamond; a microwave (MW) radiation source configured to irradiate the single crystal diamond with a MW signal; a magnetic field source configured to apply a bias magnetic field to the single crystal diamond; a photosensor configured to collect the fluorescent signal generated by the single crystal diamond; and a computing node operatively coupled to each of the coherent light source, the MW radiation source, the magnetic field source, and the photosensor.

High-resolution magnetic field fingerprinting of integrated circuit activity with a quantum diamond microscope

A method and system of measuring a direct current magnetic field using a plurality of spin centers are disclosed. A spin bath associated with the spin centers may be driven with a first source of electromagnetic radiation to reduce dephasing of the spin centers. The spin centers may be measured using double quantum (DQ) magnetometry in order to reduce the effects of crystal strain on spin dephasing times. An electromagnetic response of at least one of the plurality of spin centers may be observed using an electromagnetic radiation collection device. Accordingly, up to an eight times improvement in DC field sensitivity may be accomplished for a spin center ensemble.

Control and cancellation of spin bath induced dephasing in solid-state ensembles

Solid-state spin sensor systems and methods of manufacturing are disclosed. A mounting structure may be provided in thermal contact with a solid-state spin sensor having a plurality of color center defects such that thermal energy flows from the solid-state spin sensor to the mounting structure. A microwave application structure may be disposed on a face of the mounting structure or a face of the solid-state spin sensor for applying microwave radiation to the solid-state spin sensor.

Integrated mounting solution for solid-state spin sensors used for bulk detection and imaging

A system and method for performing vector magnetometry are described. A method can include illuminating diamond with a modulated optical signal and a modulated microwave (MW) signal. A first, bias magnetic field is also applied to the diamond. Light emitted from the diamond in response to the optical signal, the MW signal, and the first magnetic field is detected via a single detector at a fixed position relative to the diamond. A modulation of the detected light encodes information corresponding to a plurality of nitrogen vacancy (NV) axes of the diamond.

Simultaneous vector magnetometry with nitrogen vacancy centers in diamond or other solid-state spin sensors

Growing community of inventors

Somerville, MA, United States of America

Matthew James Turner