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Robustness self-testing of states and measurements in the prepare-and-measure scenario with

3 → 1

random access code

Wei Shi-Hui^{1, 2}, Guo Fen-Zhuo^{1, 2, †}, Li Xin-Hui¹, Wen Qiao-Yan¹

Sketch of the 3 → 1 RAC. Alice prepares a qubit ρ x according to her three classical bits x ∈ { 000 , 001 , ⋯ , 111 } and sends it to Bob. Bob performs his measurement on the received qubit depending on his input y ∈ { 0 , 1 , 2 } and gets the measurement result denoted as b ∈ { 0 , 1 } .