A modular target structure is disclosed for supporting targets during target practice. An example modular target structure includes a first leg structure, a second leg structure, and an interconnecting member. The interconnecting member connects between the first leg structure and the second leg structure to form a substantially triangular shaped support structure which can be utilized in a horizontal or vertical configuration. At least one target mount may be provided for attaching targets. The support structure is readily assembled and unassembled and can be configured between an operating position for target practice, and a collapsed position for transport and storage.

A modular target structure is disclosed for supporting targets during target practice. An example modular target structure includes a first leg structure, a second leg structure, and an interconnecting member. The interconnecting member connects between the first leg structure and the second leg structure to form a substantially triangular shaped support structure which can be utilized in a horizontal or vertical configuration. At least one target mount may be provided for attaching targets. The support structure is readily assembled and unassembled and can be configured between an operating position for target practice, and a collapsed position for transport and storage.

An audible response self-healing target having a generally flat shell mated with a generally flat metal strike plate. The shell has a “self-healing” polymer “target zone”, and tabs that hold the metal plate parallel to the target zone with a small gap of approximately one-half inch. The shell rotatably mounts onto a pole, such that when a projectile, such as a bullet slug, impacts the target's strike zone, the slug penetrates the polymer and strikes the metal plate, kinetically causing the target to rotate about the pole and also causing the metal plate to generate an audible response.

An audible response self-healing target having a generally flat shell mated with a generally flat metal strike plate. The shell has a “self-healing” polymer “target zone”, and tabs that hold the metal plate parallel to the target zone with a small gap of approximately one-half inch. The shell rotatably mounts onto a pole, such that when a projectile, such as a bullet slug, impacts the target's strike zone, the slug penetrates the polymer and strikes the metal plate, kinetically causing the target to rotate about the pole and also causing the metal plate to generate an audible response.

A reusable shooting target or target system may include multiple rotary targets each having a target plate section having a bottom end, a top end, a front end, and a back end, and a pivot section. The target may include crossbars having a first end, a body portion, and a second end, front legs and back legs. The pivot section of each rotary target is fixedly or removably attached to the body section of one of the crossbars such that the target plate section of the rotary target is positioned below the crossbar to which the pivot section is attached. The pivot section of each rotary target and the crossbar to which the pivot section is attached are together adapted such that when hit with a bullet the rotary target spins around an axis aligned with the respective crossbar to which the rotary target is attached.

A reusable shooting target or target system may include multiple rotary targets each having a target plate section having a bottom end, a top end, a front end, and a back end, and a pivot section. The target may include crossbars having a first end, a body portion, and a second end, front legs and back legs. The pivot section of each rotary target is fixedly or removably attached to the body section of one of the crossbars such that the target plate section of the rotary target is positioned below the crossbar to which the pivot section is attached. The pivot section of each rotary target and the crossbar to which the pivot section is attached are together adapted such that when hit with a bullet the rotary target spins around an axis aligned with the respective crossbar to which the rotary target is attached.

A self-healing reactive target includes a target apparatus and a target holder. The target apparatus is a solid one-piece target apparatus made from a self-healing material. The target holder is configured to hold the one-piece target apparatus. The target holder is made from a tear resistant and self-healing material. Wherein, the solid one-piece target is configured to move about the target holder for providing reactive feedback when shot. Wherein the solid one-piece target apparatus is configured to spin within the target holder for providing instant feedback when shot.

A self-healing reactive target includes a target apparatus and a target holder. The target apparatus is a solid one-piece target apparatus made from a self-healing material. The target holder is configured to hold the one-piece target apparatus. The target holder is made from a tear resistant and self-healing material. Wherein, the solid one-piece target is configured to move about the target holder for providing reactive feedback when shot. Wherein the solid one-piece target apparatus is configured to spin within the target holder for providing instant feedback when shot.

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.