One-photon and two-photon blockades in a four-wave-mixing system embedded with an atom

Li, Yuanchuan; Yao, Zhihai; Yang, Hui

doi:10.1103/physreva.109.043702

Phys. Rev. A

2024

DOI: 10.1103/physreva.109.043702

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One-photon and two-photon blockades in a four-wave-mixing system embedded with an atom

Yuanchuan Li,

Zhihai Yao,

Hui Yang

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Cited by 4 publications

References 62 publications

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Multimode Photon Blockade with a Reversed Design Method

Zhou,

Liu,

Zhang

et al. 2024

Adv Quantum Tech

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Recently, a groundbreaking advancement known as multimode photon blockade (MPB) is proposed by S. Chakram et al. [Nature. Phys. 18, 879‐884 (2022)], showcasing its ability to generate multimode W states. Inspired by their work, in this paper, an interesting method is proposed to investigate MPB by engineering the eigenstates of the system Hamiltonian, which is defined as the reverse design method. It is demonstrated that an entangled state is created with a certain probability by sharing a single photon between two coupled Kerr‐nonlinear cavities. This entangled state in the two‐coupled cavities blocks the creation of the subsequent photons. The system is in a superposition of only the entangled state and the vacuum state. And the photon blockade (PB) exists in two cavities simultaneously. The reversed design method can also be utilized to study MPB in three coupled cavities with Kerr nonlinearities by creating a three‐qubit W state.

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Multimode Photon Blockade with a Reversed Design Method

Zhou,

Liu,

Zhang

et al. 2024

Adv Quantum Tech

View full text Add to dashboard Cite

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Generation of a tripartite photonic state via a double-Λ configuration in a four-level system

Yang,

Yan

2024

Phys. Scr.

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Triphotons have a more abundant energy structure compared to biphotons. Furthermore, as the number of photons increases, excellent properties such as entangled multi-qubit states, high security, flexibility, and information capacity are observed. This leads to a growing demand for multi-body quantum information processing. Here, a method is proposed to generate a three-photon entangled state using a single six-wave mixing process in an atomic ensemble. The research examines the temporal correlation characteristics of the triphoton produced in photon coincidence counting measurements, with a focus on the linear and nonlinear susceptibilities of the six-wave mixing process. These properties primarily depend on the fifth-order nonlinear coupling coefficients responsible for the damping Rabi oscillations and the group delay determined by the longitudinal detuning function. To enhance the nonlinear interaction between the optical field and the atomic ensemble, placing the atomic ensemble in a high-quality cavity and utilizing laser cooling techniques to eliminate the internal Doppler broadening effect in the atomic gas hold promise.

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Unconventional photon blockade with non-Markovian effects in driven dissipative coupled cavities

Shen,

Yang,

2024

Phys. Rev. A

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One-photon and two-photon blockades in a four-wave-mixing system embedded with an atom

Cited by 4 publications

References 62 publications

Multimode Photon Blockade with a Reversed Design Method

Multimode Photon Blockade with a Reversed Design Method

Generation of a tripartite photonic state via a double-Λ configuration in a four-level system

Unconventional photon blockade with non-Markovian effects in driven dissipative coupled cavities

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