Vacuum-Induced Transparency

Tanji-Suzuki, Haruka; Chen, Wenlan; Landig, Renate; Simon, Jonathan; Vuletić, Vladan

doi:10.1364/iqec.2011.i1199

Cited by 3 publications

(3 citation statements)

References 10 publications

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“…Similar to the vacuum-induced transparency reported in Ref. [8], this quasi two photon resonant process is actually induced by the atom-cavity coupling which results from the resonant florescence induced by field E 1 and E F1 . In addition to the qualitative analysis stated above, we have also carried out the theoretical derivation based on the doubly dressed theory.…”

Section: Resultssupporting

confidence: 77%

“…By establishing an atom-cavity composite system with strong coupling between the atoms and the cavity, Vacuum Rabi splitting [5] on the spectrum is observed as well as a remarkable enhancement of the nonlinearity [6,7]. Besides, the vacuum-induced transparency [8] and absorption [9] are demonstrated inside an atom-cavity system. We recently go further and consider the atom-cavity coupling to function as a dressing field in cases like enhancing or suppressing the signals [10,11].…”

Section: Introductionmentioning

confidence: 94%

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Vacuum-induced dressing movement of the multi-wave mixing in a composite atom–cavity system

Chen

Wang

et al. 2015

Optical Materials

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Section: Resultssupporting

confidence: 77%

Section: Introductionmentioning

confidence: 94%

Vacuum-induced dressing movement of the multi-wave mixing in a composite atom–cavity system

Chen

Wang

et al. 2015

Optical Materials

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“…An alternative approach is based on enhancing the nonlinearity of individual quantum emitters by coupling them to optical resonators. With these systems, nonlinear phase shifts up to a few tens of degrees, single-photon-controlled on-and off-switching of light, as well as photon number-dependent redirection of light have been demonstrated [10][11][12][13][14][15] . In this Article, we demonstrate the realization of an optical fibre-based nonlinearity that leads to an unprecedented two-photon phase shift close to the ideal value of π, following a proposal by Hofmann and co-authors 16 .…”

mentioning

confidence: 99%

Nonlinear π phase shift for single fibre-guided photons interacting with a single resonator-enhanced atom

et al. 2014

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Realizing a strong interaction between individual photons is an important objective of research in quantum science and technology. It requires an optical medium in which light experiences a phase shift that depends nonlinearly on the photon number. Once the additional two-photon phase shift reaches π, such an ultra-strong nonlinearity could enable the implementation of high-fidelity quantum logic operations. However, the nonlinear response of standard optical media is orders of magnitude too weak. Here, we demonstrate a fibre-based nonlinearity that realizes an additional two-photon phase shift close to the ideal value of π. We employ a whispering-gallery-mode resonator, interfaced by an optical nanofibre, where the presence of a single rubidium atom in the resonator mode results in a strongly nonlinear response. We show that this results in entanglement of initially uncorrelated incident photons. This demonstration of a fibreintegrated, ultra-strong nonlinearity is a decisive step towards photon-based scalable quantum logics.O ptical photons are a key ingredient for investigations and applications in modern quantum information science. They are well decoupled from their environment but can, nevertheless, be conveniently manipulated with high precision. In conjunction with the ease of transmitting them over long distances using optical fibres, this makes photons prime candidates for the distribution 1 and processing of quantum information in scalable quantum networks 2 as well as for metrology beyond the standard quantum limit 3 . These and many other applications require the photons to interact with each other in order to prepare and probe entanglement or to perform quantum logic operations. However, a direct photon-photon interaction does not exist in free space. It has been shown that an effective photon-photon interaction can be implemented probabilistically using linear optical elements in combination with projective measurements 4 . Yet, for now, this technique cannot be considered scalable in a practical sense because it requires high-fidelity single-photon sources and detectors that are still beyond present capabilities 5 . Alternatively, a deterministic interaction can be realized by means of an optical medium that exhibits a nonlinearity down to the level of individual photons. Such strong optical nonlinearities have been demonstrated, for example, in atomic ensembles, where the nonlinearity either stems from direct interaction between the excited atoms 6,7 or from the generation of an intrinsic Kerr nonlinearity via electromagnetically induced transparency 8,9 . An alternative approach is based on enhancing the nonlinearity of individual quantum emitters by coupling them to optical resonators. With these systems, nonlinear phase shifts up to a few tens of degrees, single-photon-controlled on-and off-switching of light, as well as photon number-dependent redirection of light have been demonstrated [10][11][12][13][14][15] . In this Article, we demonstrate the realization of an optical fibre-based nonlin...

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Electromagnetically Induced Transparency (EIT) Like Transmission Based on 3 × 3 Cascaded Multimode Interference Resonators

Thanh

2018

Micromachines

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We propose a method for generating the electromagnetically induced transparency (EIT) like-transmission by using microring resonator based on cascaded 3 × 3 multimode interference (MMI) structures. Based on the Fano resonance unit created from a 3 × 3 MMI coupler with a feedback waveguide, two schemes of two coupled Fano resonator unit (FRU) are investigated to generate the EIT like transmission. The theoretical and numerical analysis based on the coupled mode theory and transfer matrix is used for the designs. Our proposed structure has advantages of compactness and ease of fabrication. We use silicon waveguide for the design of the whole device so it is compatible with the existing Complementary Metal-Oxide-Semiconductor (CMOS) circuitry foundry. The fabrication tolerance and design parameters are also investigated in this study.

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Vacuum-Induced Transparency

Cited by 3 publications

References 10 publications

Vacuum-induced dressing movement of the multi-wave mixing in a composite atom–cavity system

Vacuum-induced dressing movement of the multi-wave mixing in a composite atom–cavity system

Nonlinear π phase shift for single fibre-guided photons interacting with a single resonator-enhanced atom

Electromagnetically Induced Transparency (EIT) Like Transmission Based on 3 × 3 Cascaded Multimode Interference Resonators

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