Digital lock-in for magnetic imaging with nitrogen vacancy centers in diamonds
AssigneeThe MITRE Corporation
InventorsDmitro Jaroslau Martynowych, David Allen Hopper, Sean Mitchell Oliver
Life of this patent
Estimating the term…
Abstract
Disclosed herein are systems and methods for measuring integrated circuit activity via spatial resolution of optically detected magnetic resonance (ODMR) of nitrogen-vacancies (NV) in diamond. A quantum diamond microscope (QDM) can be used to capture a series of images of the fluorescence of NV centers present in diamond as a function of an external microwave field. An IC device placed adjacent to the diamond of the QDM will impact the fluorescence of the NV center, and this magnetic field-dependent fluorescence can be measured and used to generate a map of the magnetic field of the IC device.
Claims25
A system, comprising:
- a memory;
- one or more processors;
- wherein the memory stores one or more programs that when executed by the one or more processors, cause the one or more processors to:
- control a plurality of components to operate at a first parameter setting, the plurality of components comprising:
- a coherent light source configured to generate a light beam directed at a single crystal diamond, the single crystal diamond having a plurality of NV centers and configured to generate fluorescence in response to being illuminated by the coherent light source;
- 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;
- and
- a photosensor configured to measure the fluorescence generated by the single crystal diamond;
- measure the fluorescence emitted from the single crystal diamond based on the first parameter setting, wherein the fluorescence emitted is impacted by a magnetic field-generating article disposed adjacent the single crystal diamond;
- and
- determine the relative magnetic vector field of the magnetic field-generating article based on the measured fluorescence emitted from the single crystal diamond based on the first parameter setting.
A method comprising:
- controlling a plurality of components to operate at a first parameter setting, wherein the plurality of components comprise:
- a coherent light source configured to generate a light beam directed at a single crystal diamond, the single crystal diamond having a plurality of NV centers and configured to generate fluorescence in response to being illuminated by the coherent light source;
- a microwave (MW) radiation source configured to irradiate the single crystal diamond with a MW signal;
- and
- a magnetic field source configured to apply a bias magnetic field to the single crystal diamond;
- measuring the fluorescence emitted from the single crystal diamond based on the first parameter setting;
- and
- determining the relative magnetic vector field of the magnetic field-generating article based on the measured fluorescence emitted from the single crystal diamond based on the first parameter setting.
The method 13, comprising selecting the first parameter setting, wherein selecting the first parameter setting comprises:
- controlling the plurality of components to operate at a plurality of parameter settings;
- measuring the fluorescence emitted from the single crystal diamond based on a plurality of the plurality of parameter settings, wherein the fluorescence emitted is not impacted by the magnetic field-generating article
- generating an optically-detected magnetic resonance (ODMR) spectrum based on the measured fluorescence emitted from the single crystal diamond at the plurality of the plurality of parameter settings;
- and
- selecting the first parameter setting based on the generated ODMR spectrum.
A non-transitory computer-readable storage medium storing instructions that, when executed by a computing device operatively coupled to a plurality of components, cause the computing device to:
- control the plurality of components to operate at a first parameter setting, the plurality of components comprising:
- a coherent light source configured to generate a light beam directed at a single crystal diamond, the single crystal diamond having a plurality of NV centers and configured to generate fluorescence in response to being illuminated by the coherent light source;
- 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;
- and
- a photosensor configured to measure the fluorescence generated by the single crystal diamond;
- measure the fluorescence emitted from the single crystal diamond based on the first parameter setting, wherein the fluorescence emitted is impacted by a magnetic field-generating article disposed adjacent the single crystal diamond;
- and
- determine the relative magnetic vector field of the magnetic field-generating article based on the measured fluorescence emitted from the single crystal diamond based on the first parameter setting.
Dependencies are inferred from the claim text.