Schemes for fusing photonic W-state simultaneously without qubit loss via weak cross-Kerr nonlinearities

Zheng, Yan-Bei; Zhou, Xinjie; Wei, Hai‐Rui; Du, Fangfang; Song, Guo‐Zhu

doi:10.1007/s11128-021-03210-0

Cited by 6 publications

(2 citation statements)

References 57 publications

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“…In the field of quantum information processing, there are lots of method for preparing W states have been proposed, such as resonant interaction, [ 30–32 ] adiabatic process, [ 33–43 ] cross‐Kerr nonlinearities, [ 44,45 ] spin‐photon interaction, [ 46 ] and fusion method. [ 47–50 ] In general, the resonant pulse can drive the system to evolve rapidly, but this method requires precise parameter control and perfect timing, and the fidelity of the ideal state is sensitive to the parameter fluctuations and errors. The adiabatic method can overcome the above‐mentioned failing, but it needs a long evolution time.…”

Section: Introductionmentioning

confidence: 99%

Fast Preparation of W States by Designing the Evolution Operators with Rydberg Superatom

Zhang,

Wang,

et al. 2023

Adv Quantum Tech

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W states play an important role in quantum information processing and quantum computing. Here, it proposes a scheme for preparing W states by designing the evolution operators with Rydberg superatoms. It encodes quantum information on the effective energy level of the superatom, and construct shortcuts to adiabatic passages (STAP) by designing the evolution operators. Combined with Quantum Zeno dynamics and STAP, it can prepare three‐particle W states quickly and efficiently. In addition, the Rabi frequency in this scheme can be described as a linear superposition of Gaussian functions, which reduces the difficulty of practical experiment. The numerical simulation shows that the scheme is robust against decoherence, operational imperfection, and noise. At last, it generalizes this scheme to preparation of N‐particle W states.

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Section: Introductionmentioning

confidence: 99%

Fast Preparation of W States by Designing the Evolution Operators with Rydberg Superatom

Zhang,

Wang,

et al. 2023

Adv Quantum Tech

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“…To realize PBQC nonlinear-optics elements such as cross-Kerr nonlinearities can be resorted to. Despite strong nonlinearities are still challenging, marvelous advances in the field are optimistic and numerous works have used them in diverse contexts [34][35][36][37][38][39][40][41].…”

Section: Introductionmentioning

confidence: 99%

Controlled remote implementation of operators via hyperentanglement

An¹,

Cao²

2022

J. Phys. A: Math. Theor.

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Distributed quantum computation is a good solution for salable quantum computation within a quantum network each node of which just contains reasonably a few number of qubits. Controlled implementation of operators on states of a remote node is thus necessary. In this paper we propose protocols for three kinds of tasks of controlled implementation of operators on remote photon states via one hyperentangled GHZ state assisted with cross-Kerr nonlinearities: one with general operators and photon states in S-DOF, another one also with general operators but the photon state being in P-DOF and the third one with a limited subset of operators acting on photon state in both S-DOF and P-DOF. All the protocols are deterministic and performed in two stages under quantum control in each stage.

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W states fusion based on the resonant interactions in cavity QED system

2022

Appl. Phys. B

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Schemes for fusing photonic W-state simultaneously without qubit loss via weak cross-Kerr nonlinearities

Cited by 6 publications

References 57 publications

Fast Preparation of W States by Designing the Evolution Operators with Rydberg Superatom

Fast Preparation of W States by Designing the Evolution Operators with Rydberg Superatom

Controlled remote implementation of operators via hyperentanglement

W states fusion based on the resonant interactions in cavity QED system

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