 Quantum information

Source paper: www.whatdotheyknow.com/request/ba_computer_science_past_papers/response/2577745/attach/2/202402%20183%20CS%20Papers.zip?cookie_passthrough=1

Solutions to all three questions.^[ref] A product such as $|01⟩$ abbreviates a tensor product of quantum systems, with system labels ordered as indicated. Operations in a written sequence are applied from left to right in time; in an operator product, the rightmost operator acts first.