Giant Enhancement of Unconventional Photon Blockade in a Dimer Chain

Wang, You; Verstraelen, Wouter; Zhang, Baile; Liew, Timothy Chi Hin; Chong, Yidong

doi:10.1103/physrevlett.127.240402

Cited by 14 publications

(5 citation statements)

References 66 publications

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“…In this tutorial, we have focused on the "single-particle" picture, which corresponds to the regime of classical photonics; we have not covered quantum effects such as multi-photon dynamics, entanglement, and squeezing. Non-Hermitian phenomena can be introduced into the quantum regime via several interesting avenues [287][288][289][290][291][292][293]. For example, certain particle non-conserving Hamiltonians, describing parametrically driven nonlinear systems [294], can be mapped to non-Hermitian Hamiltonians via the Bogoliubov-de Gennes transformation [295][296][297][298][299], which can be used to access phenomena such as non-Hermitian topological boundary states and the non-Hermitian skin effect [300][301][302][303].…”

Section: Discussionmentioning

confidence: 99%

Non-Hermitian photonic lattices: tutorial

Wang¹,

Chong²

2023

J. Opt. Soc. Am. B

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Non-Hermitian photonic lattices combine the peculiar consequences of energy non-conservation with the physics of bandstructures, giving rise to a variety of exotic properties not found in conventional materials or photonic metamaterials. In this tutorial, we introduce the key concepts in the design and implementation of non-Hermitian photonic lattices, including the general features of non-Hermitian lattice Hamiltonians and their bandstructures, the role of non-Hermitian lattice symmetries, and the topological chracterization of non-Hermitian bandstructures. We survey several important non-Hermitian lattice designs, as well as the photonics platforms on which they can be realized. Finally, we discuss the possibilities for future developments in the field.

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Section: Discussionmentioning

confidence: 99%

Non-Hermitian photonic lattices: tutorial

Wang¹,

Chong²

2023

J. Opt. Soc. Am. B

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“…The phenomenon of the second photon being prevented by the existence of the first photon in the optical cavity is called the photon blockade effect, [1][2][3][4][5][6][7] which can be used as single photon sources. [8][9][10][11][12] In the past few decades, the photon blockade effect has been intensively studied in cavity quantum electrodynamics (QED) systems, [13][14][15][16][17][18][19][20][21][22][23][24] Rydberg atomic systems, [25,26] two-level systems coupled to the cavity, [27][28][29][30][31] Kerr-type nonlinear cavities, [32][33][34] three-wave mixing, [35,36] optical cavity with a quantum dot, [37][38][39][40][41] which plays an important role in quantum metrology, quantum computation and quantum information. [42][43][44][45][46] Besides, non-Hermitian photon blockade,…”

Section: Introductionmentioning

confidence: 99%

Atom Mediated Single‐Photon Nonlinearity in a Quadratically Coupled Optomechanical System

Liu,

Wang,

Luan

et al. 2024

Adv Quantum Tech

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In this paper, conventional phonon blockade (CPNB) and conventional photon blockade (CPTB) effects, as well as unconventional phonon blockade (UPB) effects, are studied in an optomechanical system with nonlinear interaction between the cavity frequency and the square of the mechanical displacement driven by an external field, where a two‐level atom couples with the mechanical mode and a microwave driving field pumps cavity mode. The second‐order correlation function is analytically calculated, which is in good agreement with the numerical simulation given by the master equation. With energy‐level diagram, the atom‐mechanical mode coupling is found to induces the degeneracy splitting of the states and give the optimal conditions for CPNB and CPTB in this system. With the origin of UPB, the optimal conditions are derived and it is found that the realization of UPB is determined by the two couplings of the cavity and atom with respect to the mechanical mode. Moreover, some discussions on the experimental implementation in this quadratically coupled optomechanical system are presented. This study provides a possible way for realizing single‐photon nonlinearity and can extend the applications of optomechanical systems in the field of quantum optics.

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“…One is by adding an auxiliary cavity between two cavity modes [24], and the other is to add an auxiliary driving field so that the cavity and atoms are simultaneously driven [6]. Based on this feature, many schemes have been proposed to implement UPB, such as two coupled single-mode cavities with nonlinearity [24][25][26][27], cavity embedded with a quantum dot [28][29][30], degenerate optical parametric amplifier system [31][32][33], and two coupled superconducting resonators system [34][35][36][37].…”

Section: Introductionmentioning

confidence: 99%

Simultaneously enhanced photon blockades in two microwave cavities via driving a giant atom

et al. 2023

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We propose a scheme to enhance photon blockades simultaneously in two microwave cavities connected by a giant atom. In the case that only one cavity is weakly driven, we observe that the enhanced photon blockades occur in both cavities at the same time, which is attributed to the anharmonic eigenenergy spectrum constructed by the resonantly coupled giant atom. When the cavity and the atom are simultaneously driven, the stronger photon blockades in two cavities can be successfully achieved by the destructive quantum interference of two-photon excitation. Interestingly, we find that high single-photon occupations can be obtained in both cases. Moreover, we give the optimal conditions for conventional and unconventional photon blockades through analytical calculations, which are in good agreement with numerical results. Our scheme opens a prospective path to achieve simultaneous photon blockades in two indirectly coupled cavities, and provides a promising method to generate the high-quality and brightness single photon source.

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Giant Enhancement of Unconventional Photon Blockade in a Dimer Chain

Cited by 14 publications

References 66 publications

Non-Hermitian photonic lattices: tutorial

Non-Hermitian photonic lattices: tutorial

Atom Mediated Single‐Photon Nonlinearity in a Quadratically Coupled Optomechanical System

Simultaneously enhanced photon blockades in two microwave cavities via driving a giant atom

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