Apparatus and methods for removing leakage from a qubit. In one aspect, an apparatus includes one or more qubits, wherein each qubit facilitates occupation of at least one of a plurality of qubit levels, the qubit levels including two computational levels and one or more non-computational levels that are each higher than the computational levels, wherein the qubit facilitates transitions between qubit levels associated with a corresponding transition frequency; a cavity, wherein the cavity defines a cavity frequency; one or more couplers coupling each qubit to the cavity; one or more couplers coupling the cavity to an environment external to the one or more qubits and the cavity; a frequency controller that controls the frequency of each qubit such that, for each qubit, the frequency of the qubit is adjusted relative to the cavity frequency such that a population of a non-computational level is transferred to the cavity.

Apparatus and methods for removing leakage from a qubit. In one aspect, an apparatus includes one or more qubits, wherein each qubit facilitates occupation of at least one of a plurality of qubit levels, the qubit levels including two computational levels and one or more non-computational levels that are each higher than the computational levels, wherein the qubit facilitates transitions between qubit levels associated with a corresponding transition frequency; a cavity, wherein the cavity defines a cavity frequency; one or more couplers coupling each qubit to the cavity; one or more couplers coupling the cavity to an environment external to the one or more qubits and the cavity; a frequency controller that controls the frequency of each qubit such that, for each qubit, the frequency of the qubit is adjusted relative to the cavity frequency such that a population of a non-computational level is transferred to the cavity.

A projectile target 10 comprises a support structure 20 adapted to support two or more targets 30. The targets 30 are ideally off the ground 12, that is spaced from the ground 12. Each target 30 is, in turn, supported by an arm 32 extending from a common hinge 34. Each pair of targets 30 includes a first main target 30a and a second target 30b. In a first position 38a, the first target 30a presents a first broad target surface 36a to an operator or shooter (not shown). The second target 30b is displaced so that it does not present a viable target to the operator. However, the second target 30b is adapted to move into a second, viable, target position 38b when the first target 30a is struck substantially on its broad target surface 36a by a projectile, such as a .22 calibre bullet.

A projectile target 10 comprises a support structure 20 adapted to support two or more targets 30. The targets 30 are ideally off the ground 12, that is spaced from the ground 12. Each target 30 is, in turn, supported by an arm 32 extending from a common hinge 34. Each pair of targets 30 includes a first main target 30a and a second target 30b. In a first position 38a, the first target 30a presents a first broad target surface 36a to an operator or shooter (not shown). The second target 30b is displaced so that it does not present a viable target to the operator. However, the second target 30b is adapted to move into a second, viable, target position 38b when the first target 30a is struck substantially on its broad target surface 36a by a projectile, such as a .22 calibre bullet.

A knockdown-field-target resetting system is a remote-controlled system to return a knockdown-field-target back to its upright starting position after being shot down by a gun projectile. The system includes a device enclosure, a microcontroller, a wireless communication module, a portable power source, a lift arm, an arm actuator, and a remote control. The microcontroller, the wireless communication module, and the portable power source are housed within the device enclosure. After the knockdown field target is shot down, the remote control sends a wireless instruction, which is received by the microcontroller through the wireless communication module. The microcontroller then instructs the arm actuator to move the knockdown field target back to its upright starting position by pushing the knockdown field target with the lift arm.

A knockdown-field-target resetting system is a remote-controlled system to return a knockdown-field-target back to its upright starting position after being shot down by a gun projectile. The system includes a device enclosure, a microcontroller, a wireless communication module, a portable power source, a lift arm, an arm actuator, and a remote control. The microcontroller, the wireless communication module, and the portable power source are housed within the device enclosure. After the knockdown field target is shot down, the remote control sends a wireless instruction, which is received by the microcontroller through the wireless communication module. The microcontroller then instructs the arm actuator to move the knockdown field target back to its upright starting position by pushing the knockdown field target with the lift arm.

Systems and methods are disclosed for a shooting target mounting bracket with improved portability, versatility, and safety over existing devices. The mounting bracket is easily adjustable for height, compactable for transportation, and compatible with existing target posts and existing target shapes.

Systems and methods are disclosed for a shooting target mounting bracket with improved portability, versatility, and safety over existing devices. The mounting bracket is easily adjustable for height, compactable for transportation, and compatible with existing target posts and existing target shapes.

The ballistic target system includes a suspended target plate configured to deflect incoming bullets and is adapted to absorb at least a portion of the force transferred by a bullet to the target plate upon impact. In this way, the service life of the target plate is extended. An example ballistic target system includes: a target plate having a mounting bracket attached thereto; and a target stand from which the target plate is slidably suspended. The target stand comprises a base adapted to rest on the ground, a post, and a target support bracket from which the target plate is slidably suspended by the mounting bracket attached thereto. In some implementations, the ballistic target system may further comprise a spall guard configured to protect the post from spall created when a bullet impacts the target plate.

The ballistic target system includes a suspended target plate configured to deflect incoming bullets and is adapted to absorb at least a portion of the force transferred by a bullet to the target plate upon impact. In this way, the service life of the target plate is extended. An example ballistic target system includes: a target plate having a mounting bracket attached thereto; and a target stand from which the target plate is slidably suspended. The target stand comprises a base adapted to rest on the ground, a post, and a target support bracket from which the target plate is slidably suspended by the mounting bracket attached thereto. In some implementations, the ballistic target system may further comprise a spall guard configured to protect the post from spall created when a bullet impacts the target plate.