Abstract: A resistive flex microwave attenuator for coupling control signals to a quantum computational hardware system includes a set of planar transmission lines, each such planar transmission line having first and second ends along a longitudinal axis. Each such planar transmission line includes: a set of ground planes disposed in a direction parallel to the longitudinal axis; a dielectric disposed in a direction parallel to the longitudinal axis and in contact with the set of ground planes; a signal line disposed in a direction parallel to the longitudinal axis and in contact with the set of ground planes; a metallic layer disposed around the set of ground planes; an input, coupled to such planar transmission line at the first end, and configured to receive the control signals; and an output, coupled to such planar transmission line at the second end, and configured for coupling to the quantum computational hardware system.

Abstract: An interface between cryogenic computational hardware and room temperature computational hardware includes a plurality of discrete stages, including a first stage at room temperature and a last stage at a cryogenic temperature. Each successive stage is configured for operation at a corresponding refrigeration temperature that is lower than the refrigeration temperature of each preceding stage and includes a set of planar transmission lines. The transmission lines of any given stage other than the first stage are proximally coupled to and contiguous with the transmission lines of an immediately preceding stage. The transmission lines of the first stage are proximally coupled to the room temperature computational hardware, and the transmission lines of the last stage are proximally coupled to the cryogenic computational hardware. Each stage has shielding configured to block electromagnetic radiation external to such stage.

Abstract: A resistive flex microwave attenuator for coupling control signals to a quantum computational hardware system includes a set of planar transmission lines, each such planar transmission line having first and second ends along a longitudinal axis. Each such planar transmission line includes: a set of ground planes disposed in a direction parallel to the longitudinal axis; a dielectric disposed in a direction parallel to the longitudinal axis and in contact with the set of ground planes; a signal line disposed in a direction parallel to the longitudinal axis and in contact with the set of ground planes; a metallic layer disposed around the set of ground planes; an input, coupled to such planar transmission line at the first end, and configured to receive the control signals; and an output, coupled to such planar transmission line at the second end, and configured for coupling to the quantum computational hardware system.

Abstract: A phononic filter includes a metamaterial body including a membrane including a crystalline or amorphous dielectric material, an elemental superconductor or an alloyed superconductor; and a plurality of spaced features. The spaced features includes holes, spacings, or apertures in the metamaterial body.

Abstract: Methods for actuating a microshutter array with electromechanical resonance and electrostatic force are described herein. An alternating electrical field is created by applying an alternating current (AC) voltage across a pair of actuation electrodes. A shutter blade with a blade electrode thereon is disposed between the pair of actuation electrodes and vibrates in the alternating electrical field created. Direct current (DC) voltages are applied to a vertical electrode and the blade electrode. The shutter blade is attracted to the vertical electrode and captured to an open position.

Abstract: The design of a compact low-loss Magic-T is described. The planar Magic-T incorporates a compact microstrip-slotline tee junction and small microstrip-slotline transition area to reduce slotline radiation. The Magic-T produces broadband in-phase and out-of-phase power combiner/divider responses, has low in-band insertion loss, and small in-band phase and amplitude imbalance.

Abstract: A signal conditioning module provides a polarimeter capability in a photometric system. The module may include multiple variable delay polarization modulators. Each modulator may include an input port, and a first arm formed to include a first reflector and first rooftop mirror arranged in opposed relationship. The first reflector may direct an input radiation signal to the first rooftop mirror. Each modulator also may include an output port and a second arm formed to include a second reflector and second rooftop mirror arranged in opposed relationship. The second reflector can guide a signal from the second rooftop mirror towards the output port to provide an output radiation signal. A beamsplitting grid may be placed between the first reflector and the first rooftop mirror, and also between the second reflector and the second rooftop mirror. A translation apparatus can provide adjustment relative to optical path length vis-à-vis the first arm, the second arm and the grid.

Abstract: A signal conditioning module provides a polarimeter capability in a photometric system. The module may include multiple variable delay polarization modulators. Each modulator may include an input port, and a first arm formed to include a first reflector and first rooftop mirror arranged in opposed relationship. The first reflector may direct an input radiation signal to the first rooftop mirror. Each modulator also may include an output port and a second arm formed to include a second reflector and second rooftop mirror arranged in opposed relationship. The second reflector can guide a signal from the second rooftop mirror towards the output port to provide an output radiation signal. A beamsplitting grid may be placed between the first reflector and the first rooftop mirror, and also between the second reflector and the second rooftop mirror. A translation apparatus can provide adjustment relative to optical path length vis-à-vis the first arm, the second arm and the grid.

Abstract: The design of a compact low-loss Magic-T is described. The planar Magic-T incorporates a compact microstrip-slotline tee junction and small microstrip-slotline transition area to reduce slotline radiation. The Magic-T produces broadband in-phase and out-of-phase power combiner/divider responses, has low in-band insertion loss, and small in-band phase and amplitude imbalance.

Abstract: A signal conditioning module provides a polarimeter capability in a photometric system. The module may include multiple variable delay polarization modulators. Each modulator may include an input port, and a first arm formed to include a first reflector and first rooftop mirror arranged in opposed relationship. The first reflector may direct an input radiation signal to the first rooftop mirror. Each modulator also may include an output port and a second arm formed to include a second reflector and second rooftop mirror arranged in opposed relationship. The second reflector can guide a signal from the second rooftop mirror towards the output port to provide an output radiation signal. A beamsplitting grid may be placed between the first reflector and the first rooftop mirror, and also between the second reflector and the second rooftop mirror. A translation apparatus can provide adjustment relative to optical path length vis-à-vis the first arm, the second arm and the grid.

Abstract: A signal conditioning module provides a polarimeter capability in a photometric system. The module may include multiple variable delay polarization modulators. Each modulator may include an input port, and a first arm formed to include a first reflector and first rooftop mirror arranged in opposed relationship. The first reflector may direct an input radiation signal to the first rooftop mirror. Each modulator also may include an output port and a second arm formed to include a second reflector and second rooftop mirror arranged in opposed relationship. The second reflector can guide a signal from the second rooftop mirror towards the output port to provide an output radiation signal. A beamsplitting grid may be placed between the first reflector and the first rooftop mirror, and also between the second reflector and the second rooftop mirror. A translation apparatus can provide adjustment relative to optical path length vis-à-vis the first arm, the second arm and the grid.

Abstract: A signal conditioning module provides a polarimeter capability in a photometric system. The module may include multiple variable delay polarization modulators. Each modulator may include an input port, and a first arm formed to include a first reflector and first rooftop mirror arranged in opposed relationship. The first reflector may direct an input radiation signal to the first rooftop mirror. Each modulator also may include an output port and a second arm formed to include a second reflector and second rooftop mirror arranged in opposed relationship. The second reflector can guide a signal from the second rooftop mirror towards the output port to provide an output radiation signal. A beamsplitting grid may be placed between the first reflector and the first rooftop mirror, and also between the second reflector and the second rooftop mirror. A translation apparatus can provide adjustment relative to optical path length vis-a-vis the first arm, the second arm and the grid.