Abstract: In some examples, a computing device can include a processor resource and a non-transitory memory resource storing machine-readable instructions stored thereon that, when executed, cause the processor resource to: activate a silent mode for the computing device when a videoconference is initiated, set a threshold volume and designated frequency range for the computing device, deactivate the silent mode for the computing device when a microphone associated with the computing device receives a sound that exceeds the threshold volume and is within the designated frequency range, send the received sound to other users of the videoconference, and activate the silent mode for the computing device when the computing device stops receiving the sound.

Abstract: In some examples, a computing device can include a processor resource and a non-transitory memory resource storing machine-readable instructions stored thereon that, when executed, cause the processor resource to: activate a silent mode for the computing device when a videoconference is initiated, set a threshold volume and designated frequency range for the computing device, deactivate the silent mode for the computing device when a microphone associated with the computing device receives a sound that exceeds the threshold volume and is within the designated frequency range, send the received sound to other users of the videoconference, and activate the silent mode for the computing device when the computing device stops receiving the sound.

Abstract: An optical image tracker is disclosed. The optical image tracker includes a multi-dimensional translation stage. An optical image detector is disposed on a surface of the multi-dimensional translation stage. An objective lens is coupled to the optical image detector and configured to focus a collimated beam of light on the optical image detector, wherein the collimated beam of light includes a specific field of view within a field of regard, and the multi-dimensional translation stage is configured to position the optical image detector to detect the collimated beam of light.

Abstract: An apparatus and method for an alignment cell are described herein. One apparatus includes a delivery fiber and a delivery lens coupled to an optical bench, a mirror to receive light from the delivery fiber through the delivery lens, wherein the received light is directed by the mirror to an ion trap on the trap surface, and a collection fiber coupled to the optical bench to receive light fluoresced from an ion in the ion trap.

Abstract: An apparatus and method for an alignment cell are described herein. One apparatus includes a delivery fiber and a delivery lens coupled to an optical bench, a mirror to receive light from the delivery fiber through the delivery lens, wherein the received light is directed by the mirror to an ion trap on the trap surface, and a collection fiber coupled to the optical bench to receive light fluoresced from an ion in the ion trap.

Abstract: A method is provided. The method comprises: receiving incident light, from an object surface, on a top surface of a holographic optical field flattener (HOFF); transforming direction of light, with a hologram, if the light is incident on a portion of the HOFF at an angle equal to a non-zero field angle of the portion; and emitting transformed light from a bottom surface of the HOFF.

Abstract: A system is provided. The system comprises: a rotational beam system; an optical detector system, including a Risley prism system, coupled to the rotational beam system; wherein the rotational beam system is configured to azimuthally rotate the optical detector system around an axis at a fixed altitude angle; and wherein the at least one Risley prism system is configured to change the field of view of the optical detector system.

Abstract: An optical system comprises a pair of Risley prisms positioned along an optical axis to receive a light beam from a field of view, wherein at least one of the Risley prisms is rotatable, transverse to the optical axis, with respect to the other of the Risley prisms. At least one lens is positioned along the optical axis to receive the light beam from the pair of Risley prisms, with the at least one lens configured to focus the light beam. An optical detector array is positioned along the optical axis at an image plane, wherein the optical detector array receives the focused light beam on the image plane from the at least one lens. The optical system can be implemented as a light beam steering mechanism in a star tracker or celestial aided inertial navigation unit.

Abstract: Preparation cell systems and methods are described herein. One example of a system for a preparation cell includes a laser coupled to a fiber bundle comprising a plurality of fibers, a preparation cell to prepare a state of laser light received by the fiber bundle, and an exiting fiber bundle coupled to the preparation cell.

Abstract: An optical image tracker is disclosed. The optical image tracker includes a multi-dimensional translation stage. An optical image detector is disposed on a surface of the multi-dimensional translation stage. An objective lens is coupled to the optical image detector and configured to focus a collimated beam of light on the optical image detector, wherein the collimated beam of light includes a specific field of view within a field of regard, and the multi-dimensional translation stage is configured to position the optical image detector to detect the collimated beam of light.

Abstract: A method is provided. The method comprises: receiving incident light, from an object surface, on a top surface of a holographic optical field flattener (HOFF); transforming direction of light, with a hologram, if the light is incident on a portion of the HOFF at an angle equal to a non-zero field angle of the portion; and emitting transformed light from a bottom surface of the HOFF.

Abstract: A multi-cell apparatus and method for single ion addressing are described herein. One apparatus includes a first cell configured to set a frequency, intensity, and a polarization of a laser and shutter the laser, a second cell configured to align the shuttered laser to an ion in an ion trap such that the ion fluoresces light and/or performs a quantum operation, and a third cell configured to detect the light fluoresced from the ion.

Abstract: An optical system comprises a pair of Risley prisms positioned along an optical axis to receive a light beam from a field of view, wherein at least one of the Risley prisms is rotatable, transverse to the optical axis, with respect to the other of the Risley prisms. At least one lens is positioned along the optical axis to receive the light beam from the pair of Risley prisms, with the at least one lens configured to focus the light beam. An optical detector array is positioned along the optical axis at an image plane, wherein the optical detector array receives the focused light beam on the image plane from the at least one lens. The optical system can be implemented as a light beam steering mechanism in a star tracker or celestial aided inertial navigation unit.

Abstract: Apparatuses and systems for a die-integrated aspheric mirror are described herein. One apparatus includes an ion trap die including a number of ion locations and an aspheric mirror integrated with the ion trap die.

Abstract: Apparatuses and systems for a die-integrated aspheric mirror are described herein. One apparatus includes an ion trap die including a number of ion locations and an aspheric mirror integrated with the ion trap die.

Abstract: Apparatuses and systems for a die-integrated aspheric mirror are described herein. One apparatus includes an ion trap die including a number of ion locations and an aspheric mirror integrated with the ion trap die.

Abstract: Preparation cell systems and methods are described herein. One example of a system for a preparation cell includes a laser coupled to a fiber bundle comprising a plurality of fibers, a preparation cell to prepare a state of laser light received by the fiber bundle, and an exiting fiber bundle coupled to the preparation cell.

Abstract: A single cell apparatus and method for single ion addressing are described herein. One apparatus includes a single cell configured to set a frequency, intensity, and a polarization of a laser, shutter the laser, align the shuttered laser to an ion in an ion trap such that the ion fluoresces light and/or performs a quantum operation, and detect the light fluoresced from the ion.

Abstract: Preparation cell systems and methods are described herein. One example of a system for a preparation cell includes a laser coupled to a fiber bundle comprising a plurality of fibers, a preparation cell to prepare a state of laser light received by the fiber bundle, and an exiting fiber bundle coupled to the preparation cell.

Abstract: A multi-cell apparatus and method for single ion addressing are described herein. One apparatus includes a first cell configured to set a frequency, intensity, and a polarization of a laser and shutter the laser, a second cell configured to align the shuttered laser to an ion in an ion trap such that the ion fluoresces light and/or performs a quantum operation, and a third cell configured to detect the light fluoresced from the ion.