Flexible Quantum Image Secret Sharing Based on Measurement and Strip

A flexible (2k, 2k) quantum image secret sharing (QISS) is proposed for the first time based on 1-qubit measurement scheme and the idea of strip. Through simple quantum measurements, a quantum image can be generated into 2k shares. When recovering the original secret image, strip operations which are proposed in quantum movie are applied on the shares and the secret image can be recovered in one piece. Compared with the polynomial interpolation based quantum state sharing method, QISS needn´t map the quantum secret state to a new encoding. Moreover, the shares in QISS are still quantum images and the sizes of them are smaller than the original one.