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Chinese Journal of Physics

Multiparty-controlled remote control without multipartite entanglement

Hao Jia, Yu‐Guang Yang, Yuechao Wang, Guang‐Bao Xu, Dong‐Huan Jiang, Yi‐Hua Zhou, Wei-Min Shi

Published Jun 20, 2025• 1 citation
Publisher
DOI
10.1016/j.cjph.2025.06.028

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Abstract Multiparty‐controlled joint remote state preparation (MCJRSP) enables multiple senders to jointly prepare an arbitrary state for a distant receiver via the control of multiple agents within a quantum network. The multipartite Greenberger–Horne–Zeilinger (GHZ) state is commonly employed as a key resource in MCJRSP protocols. However, the depth requirements of unitary circuits for GHZ state preparation and the unreliable long‐distance distribution of GHZ states limit the practical applications of these MCJRSP tasks under current conditions. To overcome these limitations, a practical MCJRSP scheme is presented for remotely preparing arbitrary single‐particle state without GHZ states. This scheme is further extended to remote preparation of arbitrary multi‐particle state. The performance of the protocol is analyzed under certain types of noise, and compare it with existing GHZ‐state‐based protocols. The results indicate that the protocol exhibits superior robustness under noisy conditions when preparing multi‐particle states. Moreover, it requires fewer quantum resources and does not necessitate classical communication. Additionally, the protocol offers a unique advantage: it can tolerate an arbitrary number of non‐responsive agents. This study provides a more feasible and efficient approach for realizing MCJRSP in long‐distance quantum communication networks.
We present a strategy for implementing multiparty-controlled remote state preparation (MCRSP) for a family of four-qubit cluster-type states with genuine entanglements while employing, Greenberg-Horne-Zeilinger-class states as quantum channels. In this scenario, the encoded information is transmitted from the sender to a spatially separated receiver via the control of multi-party. Predicated on the collaboration of all participants, the desired state can be entirely restored within the receiver's place with high success probability by application of appropriate local operations and necessary classical communication . Moreover, this proposal for MCRSP can be faithfully achieved with unit total success probability when the quantum channels are distilled to maximally entangled ones.