The invention is related to a method and an inertial navigation system for combining continuous signal output from a first inertial sensor (14) with discontinuous signal output from a second inertial sensor (12). The first inertial sensor (14) acquires continuous data with respect to a navigation frame of reference for a parameter used in inertial navigation and the continuous data is processed to produce estimated values of the parameter. The second inertial sensor (12) acquires discontinuous data with respect to a case frame of reference indicative of the parameter with respect to a case (25) containing the second inertial sensor (12). The discontinuous data is processed to produce measurements of the parameter at selected times, —and the estimated values of the parameter and the measurements of the parameter are processed at selected times with a Kalman filter to provide corrections to the estimated values of the parameter at the selected times.

A quantum device includes a non-reciprocal transmission structure, wherein the transmission structure is designed such that for first waves traversing the transmission structure in a forward direction the phases of the first waves are at least partially conserved, and for second waves traversing the transmission structure in a backward direction, the phases of the second waves are at least partially replaced by random ones, such that the phase conservation is more pronounced in the forward direction than in the backward direction.

The present application discloses a control method for fast trapping and high-frequency mutual ejection of cold atom groups. The control method includes: arranging three groups of optical stops on three groups of light sources (splitters) in three-dimensional magneto-optical traps, to form a shaded regions; ejecting a cold atom group from the first three-dimensional magneto-optical trap along a movement trajectory to the second three-dimensional magneto-optical trap, where the movement trajectory passes through the shaded regions of the two three-dimensional magneto-optical traps; and, when it is determined that the cold atom group enters the shaded region of the first three-dimensional magneto-optical trap, trapping a next cold atom group by turning on three-dimensional cooling light and three-dimensional repumping light in the first three-dimensional magneto-optical trap.

A truncated non-linear interferometer-based atomic force microscope (AFM) includes an input port and a non-linear amplifier that renders a probe beam and a conjugate beam. The AFM includes local oscillators having a relationship with the probe beam and the conjugate beam. The displacement of the AFM's cantilever is transduced by the probe beam, and/or the conjugate beam or their respective local oscillators. The AFM's phase-sensitive detectors detect a phase modulation between the respective local oscillators and the probe beam and the conjugate beam. The detected phase modulation corresponds to the change in phase. The AFM's circuitry measures phase signals that are indicative of the cantilever displacement. The resulting measurement signals exhibit a quantum noise reduction in either the intensity difference or phase sum quadrature.

A truncated non-linear interferometer-based atomic force microscope (AFM) includes an input port and a non-linear amplifier that renders a probe beam and a conjugate beam. The AFM includes local oscillators having a relationship with the probe beam and the conjugate beam. The displacement of the AFM's cantilever is transduced by the probe beam, and/or the conjugate beam or their respective local oscillators. The AFM's phase-sensitive detectors detect a phase modulation between the respective local oscillators and the probe beam and the conjugate beam. The detected phase modulation corresponds to the change in phase. The AFM's circuitry measures phase signals that are indicative of the cantilever displacement. The resulting measurement signals exhibit a quantum noise reduction in either the intensity difference or phase sum quadrature.

A high-performance single-chip, integrated-optics-based OCT system is disclosed, where the length of the reference arm is digitally variable. The reference arm includes a plurality of switch stages comprising a 22 tunable wavelength-independent waveguide switch that can direct an input light signal onto either of two different-length output waveguides. In some embodiments, the directional couplers are thermo-optic based. Some embodiments include a solid-state scanning system for scanning a sample signal along a line of object points on the sample under test.

A non-contact angle measuring apparatus includes a matter-wave and energy (MWE) particle source and a detector. The MWE particle source is used for generating boson or fermion particles. The detector is used for detecting a plurality peaks or valleys of an interference pattern generated by 1) the boson or fermion particles corresponding to a slit, a bump, or a hole of a first plane and 2) matter waves' wavefront-split associated with the boson or fermion particles reflected by a second plane, wherein angular locations of the plurality peaks or valleys of the interference pattern, a first distance between a joint region of the first plane and the second plane, and a second distance between the detector and the slit are used for deciding an angle between the first plane and the second plane.

Similar to high-definition cameras, thermometers, microphones, and seismic sensors, Quantum Sensors are metric devices capable of converting analog signal diagnostics into quantized electrical impulses for data processing capabilities. However, unlike discrete bandwidth sensors digitally renormalized into frequency or temporal bit dependent amplitudes, Quantum Sensors can organize multiple multi-dimensional wavelength frequencies into a dense volumetric wavelength of Q-bit tomography information renormalized by its integration of a desired power wavelet function. This device functions as a time invariant, vector stabilized, and dimensionally independent signal filter for data capture and processing capabilities. Additionally, the extraction of a dimensional power wavelet function reduces ambient noise to signal compression interferences in signal spectroscopy analyzers. In this device a twerk, or transformation of a renormalized and quantized volumetric field gradient, is constructed as an anamorphic power density phase distribution detected by the Q-factor of a resonant flux capacitor, inductor, and semi-resistor circuit. Similar to layered RBG filter composites, Quantum Sensors can simulate holographic representations of any captured multi-dimensional data per discrete temporal amplitude, frequency modulation, or power wavelet interval function(s) into a SynXapps array of combinatoric data permutations.

A gyroscope includes an atomic beam source to generate an atomic beam in which individual atoms are in the same state, a moving standing light wave generator to generate M moving standing light waves, an interference device to obtain an atomic beam resulting from the interaction between the atomic beam and the M moving standing light waves, a monitor to detect angular velocity by monitoring the atomic beam from the interference device and an accelerometer. The accelerometer acquires information on acceleration applied to the gyroscope and the moving standing light wave generator adjusts the drift velocity of at least M1 moving standing light waves among the M moving standing light waves in response to the acceleration information.

Nonlinear interferometers include a nonlinear optical medium that is situated to produce a conjugate optical beam in response to a pump beam and a probe beam. The pump, probe, and conjugate beams propagate displaced from each other along a common optical path. One of the beams is selectively phase shifted, and the beams are then returned to the nonlinear medium, with the selectively phase shift beam phase shifted again. The nonlinear medium provides phase sensitive gain to at least one of the probe or conjugate beams, and the amplified beam is detected to provide an estimate of the phase shift.