Saturation of atomic transitions using subwavelength diameter tapered optical fibers in rubidium vapor

Jones, D. E.; Franson, J. D.; Pittman, T. B.

doi:10.1364/josab.31.001997

Cited by 16 publications

(22 citation statements)

References 32 publications

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“…This is a promising avenue for for future nonlinear optics experiments since the inert xenon atoms will not accumulate on the fiber surface. Jones et al (2014) make a direct comparison between saturation effects in freespace versus through an ONF . They present an empirical nonlinear absorption model that accurately fits the ONF data but fails when applied to the free-space data.…”

Section: Linear and Nonlinear Spectroscopymentioning

confidence: 99%

Optical Nanofibers

Solano

Grover

Hoffman

et al. 2017

Advances in Atomic, Molecular, and Optical Physics

100

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The development of optical nanofibers (ONF) and the study and control of their optical properties when coupling atoms to their electromagnetic modes has opened new possibilities for their use in quantum optics and quantum information science. These ONFs offer tight optical mode confinement (less than the wavelength of light) and diffraction-free propagation. The small cross section of the transverse field allows probing of linear and non-linear spectroscopic features of atoms with exquisitely low power. The cooperativity -the figure of merit in many quantum optics and quantum information systems -tends to be large even for a single atom in the mode of an ONF, as it is proportional to the ratio of the atomic cross section to the electromagnetic mode cross section. ONFs offer a natural bus for information and for inter-atomic coupling through the tightly-confined modes, which opens the possibility of one-dimensional many-body physics and interesting quantum interconnection applications. The presence of the ONF modifies the vacuum field, affecting the spontaneous emission rates of atoms in its vicinity. The high gradients in the radial intensity naturally provide the potential for trapping atoms around the ONF, allowing the creation of onedimensional arrays of atoms. The same radial gradient in the transverse direction of the field is responsible for the existence of a large longitudinal component that introduces the possibility of spin-orbit coupling of the light and the atom, enabling the exploration of chiral quantum optics.

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Section: Linear and Nonlinear Spectroscopymentioning

confidence: 99%

Optical Nanofibers

Solano

Grover

Hoffman

et al. 2017

Advances in Atomic, Molecular, and Optical Physics

100

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“…Firstly, the large optical depth of trapped atomic arrays in such a geometry could lead to efficient quantum information storage [7], Bragg reflections [8,9] and optical diodes [10]. Secondly, the small transverse section of the guided modes along the ONF could induce nonlinear interactions and low-power saturation [11][12][13]. Thirdly, the fluorescence from spontaneously decayed atoms could also be coupled into the ONF for precise detection [14,15].…”

Section: Introductionmentioning

confidence: 99%

Observation of ladder-type electromagnetically induced transparency with atomic optical lattices near a nanofiber

Liu

et al. 2019

New J. Phys.

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Tapered nanofiber is an efficient tool for enhancing light-matter interactions. Here, we experimentally demonstrate the ladder-type electromagnetically induced transparency (EIT) in one-dimensional atomic lattices near an optical nanofiber (ONF). A typical EIT signal is well fitted from experimental data according to a semiclassical model and implies a transmission nearly 35%. We investigate the dependence of EIT transmission on the coupling power and its saturation condition. In addition, we show a large fraction of the transmission spectral broadening is induced by lattice effects. Our results may pave the road towards generating correlations and entanglement through four-wave mixing with ONFs, which may facilitate the realization of efficient quantum optical networks.

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“…with the TOF temporarily disconnected from the ring cavity) over the same range of input power. The onset of absorption saturation at remarkably low powers (P in ∼ 10 nW) is fundamentally due to the small mode area guided by the nanofiber segment [16] and is the origin of the nonlinearity in the main plot. With a finesse of only F ∼ 3.6, the cavity field buildup factor is on the order of unity, and the rapid change in cavity transmission (red curve) also begins around P in ∼ 10 nW.…”

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confidence: 98%

“…The cavity response (both with and without the atoms) is then measured by scanning a tunable narrowband diode laser (Newport Velocity TLB-6700) across several FSRs. The nanofiber segment has a diameter of roughly D nf ∼ 320 nm and a length of L nf ∼ 6 mm [16]. For Rb resonant light at 780 nm, this D nf guides an evanscent mode with a diameter of D m ∼ 1 µm.In a ring resonator geometry, critical coupling is achieved when the coupling loss into the ring is equal to the total internal loss [17].…”

mentioning

confidence: 99%

“…The main plot shows transmission of a cavity resonance "with atoms" (red curve; ∆ ap ∼ 0) as a function of input power P in . As P in is increased, the Rb excited state population begins to saturate [16], resulting in a reduction of atomic absorption loss and a return to near critical coupling when the absorption is fully saturated at higher powers. In contrast, the transmission of a cavity resonance "without atoms" (blue curve; ∆ ap ∼ −6 GHz ) is linear with P in .…”

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confidence: 99%

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Nanofiber-segment ring resonator

et al. 2016

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We describe a fiber ring resonator comprised of a relatively long loop of standard single-mode fiber with a short nanofiber segment. The evanescent mode of the nanofiber segment allows the cavity-enhanced field to interact with atoms in close proximity to the nanofiber surface. We report on an experiment using a warm atomic vapor and low-finesse cavity, and briefly discuss the potential for reaching the strong coupling regime of cavity QED by using trapped atoms and a high-finesse cavity of this kind.

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Saturation of atomic transitions using subwavelength diameter tapered optical fibers in rubidium vapor

Cited by 16 publications

References 32 publications

Optical Nanofibers

Optical Nanofibers

Observation of ladder-type electromagnetically induced transparency with atomic optical lattices near a nanofiber

Nanofiber-segment ring resonator

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