Microcavities coupled to multilevel atoms

Schmid, Sandra Isabelle; Evers, Jörg

doi:10.1103/physreva.84.053822

Cited by 10 publications

(3 citation statements)

References 43 publications

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“…We point out that the essential idea of above discussions can be applied to the system in which the two WGM resonators couple with each other directly via coherent photon hopping [46,47], i.e., coupled resonators. It can also be applied to the situation where two negatively charged N-V centers are positioned near the surface of a common WGM resonator [36].…”

Section: B Two Coupled Wgm Microresonators Through the Evanescent Fimentioning

confidence: 99%

Dissipative preparation of entangled states between two spatially separated nitrogen-vacancy centers

Gao

et al. 2012

Phys. Rev. A

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We present a novel scheme for the generation of entangled states of two spatially separated nitrogen-vacancy (NV) centers with two whispering-gallery-mode (WGM) microresonators, which are coupled either by an optical fiber-taper waveguide, or by the evanescent fields of the WGM. We show that, the steady state of the two NV centers can be steered into a singlet-like state through a dissipative quantum dynamical process, where the cavity decay plays a positive role and can help drive the system to the target state. The protocol may open up promising perspectives for quantum communication and computation with this solid-state cavity quantum electrodynamic system.

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Section: B Two Coupled Wgm Microresonators Through the Evanescent Fimentioning

confidence: 99%

Dissipative preparation of entangled states between two spatially separated nitrogen-vacancy centers

Gao

et al. 2012

Phys. Rev. A

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“…Particularly, due to its very low loss rate achieved experimentally and the special construction of its cyclic modes, the WGR possesses the potential advantage for many quantum optical applications. Actually, with the WGRs, numerous single-photon devices such as quantum switches [19][20][21][22], photonic transistors [23,24], quantum routing networks [1,25], entangled photon-pair generators [26], and optomechanical devices [27][28][29][30][31], etc., have been demonstrated. Continuously, in this paper we design a double-WRG quantum router to control the single-photon transport in a double-waveguide quantum network.…”

Section: Introductionmentioning

confidence: 99%

Single-photon routing with whispering-gallery resonators

Huang

Zhang

Wei

2018

J. Phys. B: At. Mol. Opt. Phys.

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Quantum routing of single photons in a system with two waveguides coupled to two whispering-gallery resonators (WGRs) are investigated theoretically. With a real-space full quantum theory, photonic scattering amplitudes along four ports of the waveguide network are analytically obtained. It is shown that, by adjusting the geometric and physical parameters of the two-WGR configuration, the quantum routing properties of single photons along the present waveguide network can be controlled effectively. For example, the routing capability from input waveguide to another one can significantly exceed 0.5 near the resonance point of scattering spectra, which can be achieved with only one resonator. By properly designing the distance between two WGRs and the waveguide-WGR coupling strengths, the transfer rate between the waveguides can also reach certain sufficiently high values even in the non-resonance regime. Moreover, Fano-like resonances in the scattering spectra are designable. The proposed system may provide a potential application in controlling single-photon quantum routing as a novel router.

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“…Many schemes have been put forward to study the photon transport properties in different kinds of models. For example, CCAs where one of the cavities is embedded with a two-level atom [5][6][7][8] or a Λ-type three-level atom have been studied, [9][10][11][12][13] respectively. Recently, Zhou et al [14] considered the nonlocal coupling between the atom and the CCAs, and explained the destructive interference phenomenon of the transmission spectra according to the effect of which-way detection.…”

Section: Introductionmentioning

confidence: 99%