Abstract: A method, system and computer program product for assisting users in creating quantum circuits. Quantum logic gates of a quantum circuit (being designed by a user) that are to be grouped together are identified. Upon identifying such quantum logic gates, those quantum logic gates are grouped together into a grouped set of quantum logic gates. Upon forming a grouped set of quantum logic gates, filters are displayed in connection with the quantum circuit being designed by the user, where each of these filters is configured to display particular information (e.g., which gates form the grouped set of quantum logic gates, illustrate how the grouped set of quantum logic gates is transpiled to a hardware system) regarding the grouped set of quantum logic gates. For example, such filters may be visually displayed on the top of the quantum circuit being built by the user in a graphical user interface.

Abstract: In apparatus for removing material from the surface of a solid substrate, a rotary cutter cage has a plurality of cutters where each cutter has a plurality of projecting cutter teeth. The improvement comprises an adaptation in mounting of the cutters on the cutter rotary cage to force a lateral movement in the cutters when they impact a solid substrate being treated during rotation of the rotary cutter cage.

Abstract: Apparatus is disclosed for removing material from the surface of a solid substrate. A rotary cutter cage is mounted on a support frame and has at least one row of a plurality of cutters mounted on a bar connected to the cutter cage. The cutters impact a solid substrate during rotation of the cutter cage. Each cutter has a bore through which the bar extends in mounting the plurality of cutters on the cutter cage. The bore is larger than the bar to permit rotation of each cutter on the bar at least during contact with the surface being treated. A brake is provided on the cutter cage to brake rotation of the cutters after each occurrence of a corresponding row of cutters contacting the surface being treated during rotation of the cutter cage.