An economical state-dependent telecloning for a multiparticle GHZ state

Meng, Fanxu; Yu, Xutao; Zhang, Zaichen

doi:10.1007/s11128-018-1834-9

Cited by 2 publications

(2 citation statements)

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“…In recent years, much effort has been made to study QCM theoretically and experimentally, including the universal QCM [4][5][6][7], probabilistic quantum cloning [3,8], state-dependent cloning [9], phase-covariant quantum cloning [10][11][12], quantum cloning in separate cavities via the optical coherent pulse as a quantum communication bus [13], economical state-dependent telecloning [14,15], and quantum jointly assisted cloning [16].…”

Section: Introductionmentioning

confidence: 99%

“…Based on this, the new scheme, which could realize the multi-purpose quantum simulator of the equator state with a high retainment of quantum cloning, is put forward. Compared with various related studies we have investigated and examined [8,12,[14][15][16], this scheme has obvious advantages. Firstly, interactions between CBJJ (NV) and TLRs could easily control the quantum cloning process by adjusting the external parameters of the CBJJ and the frequencies of all the TLRs.…”

Section: Introductionmentioning

confidence: 99%

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Multipurpose Quantum Simulator Based on a Hybrid Solid-State Quantum Device

et al. 2019

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This paper proposes a scheme to enhance the fidelity of symmetric and asymmetric quantum cloning using a hybrid system based on nitrogen-vacancy (N-V) centers. By setting different initial states, the present scheme can implement optimal symmetric (asymmetric) universal (phase-covariant) quantum cloning, so that the copies with the assistance of a Current-biased Josephson junction (CBJJ) qubit and four transmission-line resonators (TLRs) can be obtained. The scheme consists of two stages: cjhothe first stage is the implementation of the conventional controlled-phase gate, and the second is the realization of different quantum cloning machines (QCM) by choosing a suitable evolution time. The results show that the probability of success for QCM of a copy of the equatorial state can reach 1. Furthermore, the | W 4 ± ⟩ entangled state can be generated in the process of the phase-covariant quantum anti-cloning. Finally, the decoherence effects caused by the N-V center qubits and CBJJ qubit are discussed.

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