Abstract: An atomic inertial interferometer comprises a laser that emits a CW beam; a modulator that modulates the CW beam; a filter and delay mechanism that receives the modulated beam, and includes a first pathway and a second pathway longer than the first pathway; a comb generator that receives the modulated beam, and produces a frequency comb; and a comb drive coupled to the comb generator to generate a multiple of a comb repetition rate, the comb drive including a HF source coupled to a bandpass filter. A vacuum cell holds a sample of cold atoms. The frequency comb counter-propagates with respect to the modulated beam to provide velocity slicing of the cold atoms such that a given temperature distribution of the cold atoms is sliced into a plurality of narrow temperature distributions that are probed individually and in parallel, to extract an interference signal from the narrow temperature distributions.

Abstract: A thermal metamaterial device comprises at least one MEMS thermal switch, including a substrate layer including a first material having a first thermal conductivity, and a thermal bus over a first portion of the substrate layer. The thermal bus includes a second material having a second thermal conductivity higher than the first thermal conductivity. An insulator layer is over a second portion of the substrate layer and includes a third material that is different from the first and second materials. A thermal pad is supported by a first portion of the insulator layer, the thermal pad including the second material and having an overhang portion located over a portion of the thermal bus. When a voltage is applied to the thermal pad, an electrostatic interaction occurs to cause a deflection of the overhang portion toward the thermal bus, thereby providing thermal conductivity between the thermal pad and the thermal bus.

Abstract: A sensor system comprises a laser source that emits a pump beam at a first wavelength and a probe beam at a second wavelength, and an optical means for receiving the pump and probe beams. The optical means is operative to generate a plurality of light beams, each having a different frequency, from the pump and probe beams. One or more cells receive the light beams from the optical means and allow passage of the light beams therethrough, with the cells containing alkali atoms. A dichroic filter is configured to receive the light beams from the cells. The dichroic filter separates pump beam light and probe beam light from the light beams. A detector array receives the probe beam light from the dichroic filter. The detector array includes a two-dimensional array of photosensors that map out transmission of respective light beams corresponding to the probe beam light through the cells.

Abstract: A continuously tunable radio frequency (RF) sensor system is provided. The system includes a pump laser system that includes first and second pump lasers, at least one frequency modulator to modulate frequencies of first and second laser light from the pump lasers to first and second select frequencies, a switch system to selectively pass one of the first and second laser light, an amplifier to amplify the passed laser light, a frequency doubler to double the frequency of the amplified laser light to generate pump light. A laser source lock system is in communication with the pump laser system to ensure a frequency of the pump light is referenced to atoms in a vapor cell and provide a probe light. The pump light and probe light are transmitted through the vapor cell. A detector measures the probe light that passed through the vapor cell.

Abstract: A system and method for magnetic navigation are provided. The system comprises a navigation system for a vehicle, at least one processor operatively coupled with the navigation system, and a magnetic navigation module operatively coupled with the processor. The magnetic navigation module including instructions, executable by the processor, to perform a method comprising selecting latitude, longitude, and altitude ranges for the vehicle that is expected to travel in a region of interest; obtaining one or more magnetic anomaly maps for the region of interest; choosing a base Earth-centered, Earth-fixed (ECEF) plane and coordinates for the one or more magnetic anomaly maps; constructing an integration mesh on the base ECEF plane; and performing a Strakhov iteration process on the integration mesh to compute values of magnetic anomalies on a base source. The method then computes an estimated magnetic anomaly at a given point in space using alternative computation approaches.

Abstract: A thermal metamaterial device comprises at least one MEMS thermal switch, comprising a substrate layer including a first material having a first thermal conductivity, and a thermal bus over a first portion of the substrate layer. The thermal bus includes a second material having a second thermal conductivity higher than the first thermal conductivity. An insulator layer is over a second portion of the substrate layer and includes a third material that is different from the first and second materials. A thermal pad is supported by a first portion of the insulator layer, the thermal pad including the second material and having an overhang portion located over a portion of the thermal bus. When a voltage is applied to the thermal pad, an electrostatic interaction occurs to cause a deflection of the overhang portion toward the thermal bus, thereby providing thermal conductivity between the thermal pad and the thermal bus.

Abstract: A sensor system comprises a laser source that emits a pump beam at a first wavelength and a probe beam at a second wavelength, and an optical means for receiving the pump and probe beams. The optical means is operative to generate a plurality of light beams, each having a different frequency, from the pump and probe beams. One or more cells receive the light beams from the optical means and allow passage of the light beams therethrough, with the cells containing alkali atoms. A dichroic filter is configured to receive the light beams from the cells. The dichroic filter separates pump beam light and probe beam light from the light beams. A detector array receives the probe beam light from the dichroic filter. The detector array includes a two-dimensional array of photosensors that map out transmission of respective light beams corresponding to the probe beam light through the cells.

Abstract: A continuously tunable radio frequency (RF) sensor system is provided. The system includes a pump laser system that includes first and second pump lasers, at least one frequency modulator to modulate frequencies of first and second laser light from the pump lasers to first and second select frequencies, a switch system to selectively pass one of the first and second laser light, an amplifier to amplify the passed laser light, a frequency doubler to double the frequency of the amplified laser light to generate pump light. A laser source lock system is in communication with the pump laser system to ensure a frequency of the pump light is referenced to atoms in a vapor cell and provide a probe light. The pump light and probe light are transmitted through the vapor cell. A detector measures the probe light that passed through the vapor cell.

Abstract: Systems and embodiments for an integrated photonics tensor magnetometer are described herein. In certain embodiments, a system includes a plurality of magnetometers. The system also includes a laser carrier wafer coupled to each of the plurality of magnetometers that commonly distributes one or more lasers to each of the magnetometers in the plurality of magnetometers. Additionally, the system includes a plurality of photodetectors that detect light emitted from the laser carrier wafer and the plurality of magnetometers. Further, the system includes one or more processors that execute computer-executable instructions that cause the processor to monitor and control operation of the one or more lasers and calculate a magnetic field gradient based on the detected light from the magnetometers.

Abstract: In an example, an optical gimbal is described, the optical gimbal comprising: a pulse generator configured to generate at least two coherent beam splitting pulses; a first optical beam director configured to tilt the vector of the beam splitting pulses by an angle ?; an atom source configured to allow the beam splitting pulses to manipulate trapped atoms within the atom source; a processor configured to receive the angle ?, and control the pulse generator and the beam director; a detector coupled to the atom source configured to measure a final population of the atoms in different states.

Abstract: A device includes a substrate and nanoscale fin formed from a first material, a RF emitter that emits energy in a range of radio frequencies, and a waveguide formed from a second material. The device further includes a bichromatic directional coupler configured to couple pump and probe laser light into the waveguide. The waveguide is positioned proximate to the nanoscale fin along a coupling length such that the pump laser light propagating within the waveguide is coupled into the nanoscale fin from evanescent wave overlap along the coupling length. The pump laser light causes the first material to absorb the probe laser light when energy emitted by the RF emitter is at one or more frequencies dependent on a magnetic field. The device further includes a processor configured to determine a magnetic field strength of the magnetic field based on an identification of the one or more frequencies.

Abstract: Systems and embodiments for an integrated photonics tensor magnetometer are described herein. In certain embodiments, a system includes a plurality of magnetometers. The system also includes a laser carrier wafer coupled to each of the plurality of magnetometers that commonly distributes one or more lasers to each of the magnetometers in the plurality of magnetometers. Additionally, the system includes a plurality of photodetectors that detect light emitted from the laser carrier wafer and the plurality of magnetometers. Further, the system includes one or more processors that execute computer-executable instructions that cause the processor to monitor and control operation of the one or more lasers and calculate a magnetic field gradient based on the detected light from the magnetometers.

Abstract: A device includes a substrate and nanoscale fin formed from a first material, a RF emitter that emits energy in a range of radio frequencies, and a waveguide formed from a second material. The device further includes a bichromatic directional coupler configured to couple pump and probe laser light into the waveguide. The waveguide is positioned proximate to the nanoscale fin along a coupling length such that the pump laser light propagating within the waveguide is coupled into the nanoscale fin from evanescent wave overlap along the coupling length. The pump laser light causes the first material to absorb the probe laser light when energy emitted by the RF emitter is at one or more frequencies dependent on a magnetic field. The device further includes a processor configured to determine a magnetic field strength of the magnetic field based on an identification of the one or more frequencies.

Abstract: In an example, an optical gimbal is described, the optical gimbal comprising: a pulse generator configured to generate at least two coherent beam splitting pulses; a first optical beam director configured to tilt the vector of the beam splitting pulses by an angle ?; an atom source configured to allow the beam splitting pulses to manipulate trapped atoms within the atom source; a processor configured to receive the angle ?, and control the pulse generator and the beam director; a detector coupled to the atom source configured to measure a final population of the atoms in different states.

Abstract: Apparatuses and methods for a four port atomic gyroscope are disclosed. Because of its four ports, a four port atomic gyroscope has an output separate from an input so as to increase sensitivity of the atomic gyroscope. Thus, smaller changes in rotation rate around a center axis of an optical waveguide loop of the four port atomic gyroscope can be detected.

Abstract: A chip scale atomic clock (CSAC) includes a temperature stabilized physics system and a temperature stabilized electronics circuitry electrically coupled to the temperature stabilized physics system. Atomic clocks utilize an optical signal having a frequency component. The temperature stabilization increases frequency stability. The temperature stabilized physics system includes a vapor cell and a magnetic field coil, and is enclosed in a magnetic shield. When an ambient temperature of a chip scale atomic clock increases, fluid is extended away, due to thermal expansion, from at least one reservoir towards or away from a thermally isolated subsystem in at least one of the temperature stabilized electronics circuitry and the temperature stabilized physics system.

Abstract: A chip scale atomic clock (CSAC) is provided. The CSAC comprises: a temperature stabilized physics system, comprising a vapor cell and a magnetic field coil, and which is enclosed in a magnetic shield; and a temperature stabilized electronics circuitry electrically coupled to the temperature stabilized physics system.

Abstract: In one embodiment, a method is provided.

Abstract: A fully reciprocal atomic interferometric gyroscope is provided. The fully reciprocal atomic interferometric gyroscope includes an atomic chamber, a plurality of lasers, a controller and measurement sensor. The atomic chamber is used to hold an atom cloud. The plurality of lasers are selectively positioned to selectively direct laser beams into the atomic chamber. The controller is configured to control the plurality lasers to initially cool the atom cloud to a point where at least one optical lattice can be formed that is used to move wave function halves of atoms of the atom cloud along split wave function paths that form an interferometer cycle. The measurement sensor is configured to conduct a phase readout of a wave function upon the completion of at least one interferometer cycle around the split wave function paths.

Abstract: The presented device is an orthopedic spinal cage that is inserted from an anteriorly aspect into a patient's intervertebral disc space. The device includes a cage to maintain vertebral separation and allow for fusion. Threaded screws allow for a matting and lag feature to prevent screw back out, provide a tactile event once fully inserted, and then to provide a stepped feature for reliable screw removal with minimal axial force. These features may be adapted to any orthopedic or other application requiring the thread screw features.