Abstract
In this paper, we propose a scheme of quantum information splitting arbitrary three-qubit state by using seven-qubit entangled as quantum channel. The sender Alice first performs Bell-state measurements (BSMs) on her qubits pairs respectively and tells her measurement outcome to authorizers Bob to reconstruct the original state, then Charlie should carries out single-qubit measurement (SQM) on his qubits. According to the results from Alice and Charlie, Bob can reconstruct the original state by applying an appropriate unitary operation. After analyzing, the method achieved the desired effect of quantum information splitting (QIS). We also realize the QIS of arbitrary three-qubit state in cavity quantum electrodynamics (QED).
Highlights
The most striking features of quantum mechanics phenomenon is quantum entanglement [1–3]
Bob is authorised to reconstruct the original state, he must cooperate with Charlie, otherwise he gets nothing
Alice wants to split an arbitrary three-qubit state in cavity quantum electrodynamics (QED) system, she must carry out two joint Bell-state measurements (BSMs)
Summary
The most striking features of quantum mechanics phenomenon is quantum entanglement [1–3]. In order to achieve the QIS of arbitrary three-qubit state Alice first carries out BSMs of his qubits pairs (A, 1), (B, 3) and (C, 5), respectively According to the measurement outcomes of Alice and Charlie, Bob can reconstruct the original state | ABC with an appropriate unitary operation of his qubits 2, 4, 6. Charlie is required to measure his qubit 7 under the basis |± = √1 (|0 ± |1 ), tells his measurement outcomes to Bob. According to Alice and Charlie’s measurement outcomes, Bob can carries out an appropriate unitary operator to reconstruct the original state. After Bob get Alice and Charlie’s measurement outcomes, he needs to carry out an appropriate unitary operator to reconstruct the original state
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