Controlled remote state preparation via partially entangled quantum channel

• DOI: 10.1007/s11128-015-0917-0
• Publication Date: 2015-01-12T06:18:32Z
• Authors: Chun Wang; Zhi Zeng; Xi-Han Li
• Keywords: One-way quantum computer

We propose two controlled remote state preparation protocols via partially entangled channels. One prepares a single-qubit state and the other prepares a two-qubit state. Different from other controlled remote state preparation schemes which also utilize partially entangled channels, neither auxiliary qubits nor two-qubit unitary transformations are required in our schemes and the success probabilities are independent of the coefficients of the quantum channel. The success probabilities are 50% and 25% for arbitrary single-qubit states and two-qubit states, respectively. We also show that the success probabilities can reach 100% for restricted classes of states.