The masking condition for quantum state in two-dimensional Hilbert space

Abstract

This paper focuses on quantum information masking for quantum state in two-dimensional Hilbert space. We present a system of equations as the condition of quantum information masking. It is shown that quantum information contained in a single qubit state can be masked, if and only if the coefficients of quantum state satisfy the given system of equations. By observing the characteristics of non-orthogonal maskable quantum states, we obtain a related conclusion, namely, if two non-orthogonal two-qubit quantum states can mask a single qubit state, they have the same number of terms and the same basis. Finally, for maskable orthogonal quantum states, we analyze two special examples and give their images for an intuitive description.

References in corpus (6)

• Experimental quantum teleportation
• A generalized no-broadcasting theorem
• Masking quantum information in multipartite scenario
• The No-Broadcasting Theorem and its Classical Counterpart
• Impossibility of masking a set of quantum states of nonzero measure
• No-Cloning and No-Deleting theorems through the existence of Incomparable states under LOCC

Cited by in corpus (1)

• Entanglement is indispensable for masking arbitrary set of quantum states