Polarization nondegenerate fiber Fabry-Perot cavities with large tunable splittings

Cui, Jin-Ming; Zhou, Kun; Zhao, Meixia; Ai, Ming-Zhong; Hu, Chang-Kang; Li, Qiang; Liu, Bi-Heng; Peng, Jinqing; Huang, Yun‐Feng; Li, Chuan‐Feng; Guo, Guang‐Can

doi:10.1063/1.5024798

Cited by 12 publications

(10 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We showed that the effects of birefringence can become significant in the strong-coupling regime (C > 1) which has been recently demonstrated with both atoms [23] and ions [25] in open microscopic cavities. The ability to tailor non-negligible birefringence into these cavities has also recently been devel-oped [37,38]. Therefore, the experimental regimes discussed within this work are within current technological limits and have the potential to significantly impact present-day and future experiments.…”

Section: Discussionmentioning

confidence: 95%

“…To further examine birefringence-enhanced emission, figure 4a shows the extraction efficiency as a function of the cavity polarisation eigenmode splitting for decay rates ranging from {κ, γ} ≪ g to {κ, γ} ≈ g. It is striking that for a given set of {g, κ, γ}, increasing the cavity birefringence achieves enhanced photon extraction. Moreover, this is a practical consideration as birefringence can be tailored independently of other rates in the system via the ellipticity of the mirrors [19,37,38]. The improvement in photon extraction is most significant in the strong-coupling regime.…”

Section: B Birefringence-enhanced Photon Extractionmentioning

confidence: 99%

“…With a 40 Ca + ion coupled to a fibre-tip Fabry-Perot cavity, their system achieved coupling rates of {g 0 , κ 0 , γ}/2π = {12.3, 4.1, 11.5}MHz at L 0 = 370 µm. Concurrently, multiple groups have demonstrated the controlled engineering of birefringence in such fibre-tip Fabry-Perot cavities through the ablation of elliptical mirror geometries [37,38]. Figure 6b shows the achievable photon extraction efficiencies, once again using our model of a two-level emitter of circularly polarised light coupled to a linearly birefringent cavity, if birefringence was engineered into a cavity matching that of Takahashi et al Significantly enhanced photon extraction can be obtained and the thick red contour denotes η ext = 20.0 %, the simulated performance of the physical system without birefringence.…”

Section: Implications For Cavity Designmentioning

confidence: 99%

See 2 more Smart Citations

Pushing Purcell enhancement beyond its limits

2020

View full text Add to dashboard Cite

Purcell-enhanced emission from a coupled emitter-cavity system is a fundamental manifestation of cavity quantum electrodynamics (CQED). Starting from a theoretical description we derive a scheme for photon emission from an emitter coupled to a birefringent cavity that exceeds hitherto anticipated limitations. Based on a recent study and experimental investigation of the intra-cavity coupling of orthogonal polarisation modes in birefringent cavities [T. D. Barrett et al., Phys. Rev. Lett. 122, 083602 (2019)], we now decouple the emitter and the photon prior to emission from the cavity mode. Effectively, this is 'hiding' the emitter from the photon in the cavity to suppress re-excitation, increasing the overall emission through the cavity mirrors. In doing so we show that tailored cavity birefringence can offer significant advantages and that these are practically achievable within the bounds of present-day technology. It is found that birefringence can mitigate the tradeoff between stronger emitter-cavity coupling and efficient photon extraction. This allows for longer cavities to be constructed without a loss of performance -a significant result for applications where dielectric mirrors interfere with any trapping fields confining the emitter. We then generalise our model to consider a variety of equivalent schemes. For instance, detuning a pair of ground states in a threelevel emitter coupled to a cavity in a Λ-system is shown to provide the same enhancement, and it can be combined with a birefringent cavity to further increase performance. Additionally, it is found that when directly connecting multiple ground states of the emitter to form a chain of coupled states, the extraction efficiency approaches its fundamental upper limit. The principles proposed in this work can be applied in multiple ways to any emitter-cavity system, paving the way to surpassing the traditional limits of such systems with technologies that exist today. * thomas.barrett@physics.ox.ac.uk

show abstract

Section: Discussionmentioning

confidence: 95%

Section: B Birefringence-enhanced Photon Extractionmentioning

confidence: 99%

Section: Implications For Cavity Designmentioning

confidence: 99%

See 1 more Smart Citation

Pushing Purcell enhancement beyond its limits

2020

View full text Add to dashboard Cite

show abstract

“…We thank K. Schüppert for contributions in the early stage of the experiment. While finalizing the manuscript, we become aware of a related method of producing asymmetric mirrors [35].…”

Section: Acknowledgmentsmentioning

confidence: 99%

Dual-wavelength fiber Fabry-Perot cavities with engineered birefringence

Garcia,

Ferri,

Ott

et al. 2018

Preprint

View full text Add to dashboard Cite

We present a method to engineer the frequency splitting of polarization eigenmodes in fiber Fabry-Perot (FFP) cavities. Using specific pattern of multiple CO 2 laser pulses, we machine paraboloidal micromirrors with controlled elliptical shape in a large range of radii of curvature. This method is versatile and can be used to produce cavities with maximized or near-zero polarization mode splitting. In addition, we realize dual-wavelength FFP cavities with finesse exceeding 40 000 at 780 nm and at 1559 nm in the telecom range. We provide direct evidence that the birefringent frequency splitting in FFP cavities is governed only by the geometrical shape of the mirrors, and that the astigmatism of the cavity modes needs to be taken into account for specific cavities.

show abstract

“…Over the past few years, the main focus of research on CO 2 laser ablation of mirror templates on optical fibers has been developing multi-shot ablation procedures in order to achieve better control over the geometry of the concave shape [24][25][26][27]. These studies, alongside with improved analytical and numerical cavity models [28][29][30][31][32], notably contributed to recent breakthroughs in trapped ion CQED [33], trapped atom CQED [34], solid-state QED [35], and optomechanics [36].…”

Section: Introductionmentioning

confidence: 99%

Optimized single-shot laser ablation of concave mirror templates on optical fibers

2019

View full text Add to dashboard Cite

We realize mirror templates on the tips of optical fibers using a single-shot CO 2 laser ablation procedure. We perform a systematic study of the influence of the pulse power, pulse duration, and laser spot size on the radius of curvature, depth, and diameter of the mirror templates. We find that these geometrical characteristics can be tuned to a larger extent than has been previously reported, and notably observe that compound convex-concave shapes can be obtained. This detailed investigation should help further the understanding of the physics of CO 2 laser ablation processes and help improve current models. We additionally identify regimes of ablation parameters that lead to mirror templates with favorable geometries for use in cavity quantum electrodynamics and optomechanics.

show abstract

Polarization nondegenerate fiber Fabry-Perot cavities with large tunable splittings

Cited by 12 publications

References 41 publications

Pushing Purcell enhancement beyond its limits

Pushing Purcell enhancement beyond its limits

Dual-wavelength fiber Fabry-Perot cavities with engineered birefringence

Optimized single-shot laser ablation of concave mirror templates on optical fibers

Contact Info

Product

Resources

About