Abstract: Methods and apparatus that provide for inertial sensing. In one example, a method for inertial sensing includes trapping and cooling a cloud of atoms, applying a first beam splitter pulse sequence to the cloud of atoms, applying one or more augmentation pulses to the cloud of atoms subsequent to applying the first beam splitter pulse sequence, applying a mirror sequence to the cloud of atoms, applying a one or more augmentation pulses to the cloud of atoms subsequent to applying the mirror sequence, applying a second beam splitter pulse sequence to the cloud of atoms subsequent to applying the second augmentation pulse, modulating at least one of a phase and an intensity of at least one of the first and the second beam splitter pulse sequences, performing at least one measurement on the cloud of atoms, and generating a control signal based on the at least one measurement.

Abstract: Methods and apparatus that provide for inertial sensing. In one example, a method for inertial sensing includes trapping and cooling a cloud of atoms, applying a first beam splitter pulse sequence to the cloud of atoms, applying one or more augmentation pulses to the cloud of atoms subsequent to applying the first beam splitter pulse sequence, applying a mirror sequence to the cloud of atoms, applying a one or more augmentation pulses to the cloud of atoms subsequent to applying the mirror sequence, applying a second beam splitter pulse sequence to the cloud of atoms subsequent to applying the second augmentation pulse, modulating at least one of a phase and an intensity of at least one of the first and the second beam splitter pulse sequences, performing at least one measurement on the cloud of atoms, and generating a control signal based on the at least one measurement.

Abstract: An inertial measurement apparatus based on atom interferometry. In one example, the inertial measurement apparatus includes a vacuum chamber, first and second atom capture sites housed within the vacuum chamber, each of the first and second atom capture sites being selectively configured to trap and cool first and second atom samples of distinct atom species, an atom interferometry region disposed between the first and second atom capture sites, and first and second atom interferometers operating in the atom interferometry region, the first atom interferometer being configured to generate a first measurement corresponding to a common inertial input based on the first atom sample, and the second atom interferometer being configured to generate a second measurement corresponding to the same common inertial input based on the second atom sample.

Abstract: An inertial measurement apparatus based on atom interferometry. In one example, the inertial measurement apparatus includes a vacuum chamber, first and second atom capture sites housed within the vacuum chamber, each of the first and second atom capture sites being selectively configured to trap and cool first and second atom samples of distinct atom species, an atom interferometry region disposed between the first and second atom capture sites, and first and second atom interferometers operating in the atom interferometry region, the first atom interferometer being configured to generate a first measurement corresponding to a common inertial input based on the first atom sample, and the second atom interferometer being configured to generate a second measurement corresponding to the same common inertial input based on the second atom sample.

Abstract: Compact inertial measurement systems and methods based on atom interferometry. Certain examples provide a combination atomic accelerometer-gyroscope configured to recapture and cycle atom samples through atom interferometers arranged to allow the next measurement to use the atoms from the previous measurement. Examples of the apparatus provide inertial measurements indicative of rotation for different inertial axes by applying atom interferometry to a plurality of atom samples launched in opposite directions to allow for measurement of both acceleration and rotation rates. In some examples, the inertial measurement apparatus provide a combined atomic gyroscope and an atomic accelerometer in a compact six Degrees of Freedom (6 DOF) IMU.

Abstract: Compact inertial measurement systems and methods based on atom interferometry. Certain examples provide a combination atomic accelerometer-gyroscope configured to recapture and cycle atom samples through atom interferometers arranged to allow the next measurement to use the atoms from the previous measurement. Examples of the apparatus provide inertial measurements indicative of rotation for different inertial axes by applying atom interferometry to a plurality of atom samples launched in opposite directions to allow for measurement of both acceleration and rotation rates. In some examples, the inertial measurement apparatus provide a combined atomic gyroscope and an atomic accelerometer in a compact six Degrees of Freedom (6 DOF) IMU.

Abstract: A system and method for inertial sensing using large momentum transfer atom interferometry. Certain examples include applying a ?/2-?-?/2 sequence to a cloud of atoms that produces 2?k momentum splitting, and applying at least one augmentation pulse to the cloud of atoms to increase the momentum splitting. For instance, examples include atom optics that are based on stimulated Raman transitions and adiabatic rapid passage that produce momentum splittings of at least 30 photon recoil momenta in a Mach-Zhender interferometer. In some examples, substantial recapture of the atoms allows for higher data rates.

Abstract: Methods and apparatus provide for inertial sensing and atomic time-keeping based on atom interferometry. According to one example a method for inertial sensing includes trapping and cooling a cloud of atoms, applying a first beam splitter pulse sequence to the cloud of atoms, applying a mirror sequence to the cloud of atoms subsequent to applying the first beam splitter pulse sequence, applying a second beam splitter pulse sequence to the cloud of atoms subsequent to applying the mirror sequence, modulating at least one of a phase and an intensity of at least one of the first and the second beam splitter pulse sequences, performing at least one measurement subsequent to applying the second beam splitter pulse on the cloud of atoms during an interrogation time, and generating a control signal based on the at least one measurement.