Transfer-Matrix Approach to Determining the Linear Response of All-Fiber Networks of Cavity-QED Systems

Német, Nikolett; White, D. H.; Kato, S.; Parkins, Scott; Aoki, Takao

doi:10.1103/physrevapplied.13.064010

Cited by 15 publications

(7 citation statements)

References 42 publications

(72 reference statements)

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“…Figure 3(b) shows the analytical fitting and numerical calculations for the nonlinear phase shift at the fundamental frequency ω 0 as a function of the laser intensity parameter F 0 /κ, for different values of U/γ. In agreement with previous works [75,76], in the weak driving limit (F 0 /κ ≪ 1) we obtain the linear response regime, i.e. ∆Φ(ω 0 ) ≈ 0 from equation (15), which is also demonstrated numerically in figure 3(b).…”

Section: Nonlinear Phase Shift In the Frequency Domainsupporting

confidence: 92%

Coherent anharmonicity transfer from matter to light in the THz regime

Arias,

Triana,

Delgado

et al. 2024

New J. Phys.

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Optical nonlinearities are fundamental in several types of optical information processing protocols. However, the high laser intensities needed for implementing phase nonlinearities using conventional optical materials represent a challenge for nonlinear optics in the few-photon regime. We introduce an infrared cavity quantum electrodynamics (QED) approach for imprinting nonlinear phase shifts on individual THz pulses in reﬂection setups, conditional on the input power. Power-dependent phase shifts on the order of 0.1 π can be achieved with femtosecond pulses of only a few µW input power. The proposed scheme involves a small number of intersubband quantum well transition dipoles evanescently coupled to the near ﬁeld of an infrared resonator. The ﬁeld evolution is nonlinear due to the dynamical transfer of spectral anharmonicity from material dipoles to the infrared vacuum, through an eﬀective dipolar chirping mechanism that transiently detunes the quantum well transitions from the vacuum ﬁeld, leading to photon blockade. We develop analytical theory that describes the dependence of the imprinted nonlinear phase shift on relevant physical parameters. For a pair of quantum well dipoles, the phase control scheme is shown to be robust with respect to inhomogeneities in the dipole transition frequencies and relaxation rates. Numerical results based on the Lindblad quantum master equation validate the theory in the regime where the material dipoles are populated up to the second excitation manifold. In contrast with conventional QED schemes for phase control that require strong light-matter interaction, the proposed phase nonlinearity works best in weak coupling, increasing the prospects for its experimental realization using current nanophotonic technology.

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Section: Nonlinear Phase Shift In the Frequency Domainsupporting

confidence: 92%

Coherent anharmonicity transfer from matter to light in the THz regime

Arias,

Triana,

Delgado

et al. 2024

New J. Phys.

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“…It is challenging to comprehend these results intuitively. Therefore, we perform classical electrodynamics calculations using the transmission matrix (T-matrix) formalism 55 in order to understand their physical origin.…”

Section: Resultsmentioning

confidence: 99%

Controlling the electro-optic response of a semiconducting perovskite coupled to a phonon-resonant cavity

et al. 2023

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Optical cavities, resonant with vibrational or electronic transitions of material within the cavity, enable control of light-matter interaction. Previous studies have reported cavity-induced modifications of chemical reactivity, fluorescence, phase behavior, and charge transport. Here, we explore the effect of resonant cavity-phonon coupling on the transient photoconductivity in a hybrid organic-inorganic perovskite. To this end, we measure the ultrafast photoconductivity response of perovskite in a tunable Fabry–Pérot terahertz cavity, designed to be transparent for optical excitation. The terahertz-cavity field-phonon interaction causes apparent Rabi splitting between the perovskite phonon mode and the cavity mode. We explore whether the cavity-phonon interaction affects the material’s electron-phonon interaction by determining the charge-carrier mobility through photoconductivity. Despite the apparent hybridization of cavity and phonon modes, we show that the perovskite properties in both ground (phonon response) and excited (photoconductive response) states remain unaffected by the tunable light-matter interaction. Yet the response of the integral perovskite-terahertz optical cavity system depends critically on the interaction strength of the cavity with the phonon: the transient terahertz response to optical excitation can be increased up to threefold by tuning the cavity-perovskite interaction strength. These results enable tunable switches and frequency-controlled induced transparency devices.

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“…The transfer matrix method was used to model the mode dispersion. The model relied on a 2 × 2 matrix in order to obtain the electromagnetic description of each layer [24]. The properties of the layer were extracted from Palik [25] (Ag, ITO, (3-mercaptopropyl) trimethoxysilane) and Schott (NBK7, SiO 2 ), while experimental parameters calibrated the model.…”

Section: Methodsmentioning

confidence: 99%

Demonstrating more than 2π phase modulation in non-Hermitian asymmetric multilayers

Simone

2023

New J. Phys.

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Phase modulation has come to be recognized as a fundamental paradigm for optical device design in applications involving the spatiotemporal control of optical wavefronts. Here, the cavities use a combination of absorptive and lossless layers with ideal conductive metal to control reflection and phase shift, similar to the Fabry–Pérot system, which has zero reflection and perfect transmission. Multilayers with different sequences and composed of several stack layers were examined for reflectivity when activated in a prism-coupled layout. The layer’s different arrangements, resulting in open and closed asymmetric multilayers, display reflectance spectra with distinct features as well as phase and shifts. In the open configuration, there is a strong coupling between the hybridized resonance mode and the exciton from the red dye. As a result, energy-based topological considerations identify a correlation between exciton/polariton strong coupling, topological darkness, and phase tuning, and they motivate the 3 π phase shift range.

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Transfer-Matrix Approach to Determining the Linear Response of All-Fiber Networks of Cavity-QED Systems

Cited by 15 publications

References 42 publications

Coherent anharmonicity transfer from matter to light in the THz regime

Coherent anharmonicity transfer from matter to light in the THz regime

Controlling the electro-optic response of a semiconducting perovskite coupled to a phonon-resonant cavity

Demonstrating more than 2π phase modulation in non-Hermitian asymmetric multilayers

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