Ultralow-loss silicon ring resonators

Biberman, Aleksandr; Shaw, Michael J.; Timurdogan, Erman; Wright, Jeremy Benjamin; Watts, Michael R.

doi:10.1364/ol.37.004236

Cited by 154 publications

(76 citation statements)

References 22 publications

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“…Assuming a loss of 1 dB/cm , values of

γ_{mat} = 10^{4}

–10 5 , flat in the whole near‐infrared spectral range, are obtained. If instead a low‐loss 0.1 dB/cm silicon waveguide is considered , the material figure of merit increases by an order of magnitude. As for ITO, also for silicon the figure of merit depends significantly on the injected charge density.…”

Section: Comparison Of Various Materials Employed In Actuatorsmentioning

confidence: 99%

Fundamental limits on the losses of phase and amplitude optical actuators

Zanotto

Morichetti

Melloni

2015

Laser & Photonics Reviews

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Amplitude and phase are the basic properties of all wave phenomena; as far as optical waves are concerned, the ability to act on these variables is at the root of a wealth of switching devices. To quantify the performance of an optical switching device, an essential aspect is to determine the tradeoff between the insertion loss and the amplitude or phase modulation depth. Here it is shown that every optical switching device is subject to such a tradeoff, intrinsically connected to the dielectric response of the materials employed inside the switching element itself. This limit finds its roots in fundamental physics, as it directly derives from Maxwell's equations for linear dielectrics, and is hence applicable to a wide class of optical components. Furthermore, a result is that concepts such as filtering, resonance, and critical coupling could be of advantage in approaching the limit.

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“…Assuming a loss of 1 dB/cm , values of

γ_{mat} = 10^{4}

Section: Comparison Of Various Materials Employed In Actuatorsmentioning

confidence: 99%

Fundamental limits on the losses of phase and amplitude optical actuators

Zanotto

Morichetti

Melloni

2015

Laser & Photonics Reviews

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“…In practice 12,24 , the Qs of BICs often fall much shorter of their theoretical prediction of infinity, limited to only about 1 × 10 4 . Aside from other contributing factors such as material absorption or the finite size of the samples, the main limiting factor of the Q of BICs comes from out-of-plane scattering losses from fabrication imperfections or disorder -a common problem shared among many high-Q on-chip resonators 1,2,4,5,25 .…”

mentioning

confidence: 99%

Topologically enabled ultrahigh-Q guided resonances robust to out-of-plane scattering

Jin

Yin

et al. 2019

Nature

420

292

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Due to their ability to confine light, optical resonators 1-3 are of great importance to science and technology, yet their performances are often limited by out-of-plane scattering losses from inevitable fabrication imperfections 4, 5 . Here, we theoretically propose and experimentally demonstrate a class of guided resonances in photonic crystal slabs, where out-of-plane scattering losses are strongly suppressed due to their topological nature. Specifically, these resonances arise when multiple bound states in the continuum -each carrying a topological charge 6 -merge in the momentum space and enhance the quality factors of all resonances nearby. We experimentally achieve quality factors as high as 4.9 × 10 5 based on these resonances in the telecommunication regime, which is 12-times higher than ordinary designs.We further show this enhancement is robust across the samples we fabricated. Our work paves the way for future explorations of topological photonics in systems with open boundary condition and their applications in improving optoelectronic devices in photonic integrated circuits.

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“…State of the art demonstrations of chip-integrated resonators [21][22][23] have reached quality factors exceeding 200 million, showing that the required intrinsic quality factors are within reach. For our protocol, the storage ring round-trip time should be much shorter than the pump pulse duration.…”

Section: Discussionmentioning

confidence: 99%

Temporally and spectrally multiplexed single photon source using quantum feedback control for scalable photonic quantum technologies

2018

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Current proposals for scalable photonic quantum technologies require on-demand sources of indistinguishable single photons with very high efficiency. Even with recent progress in the field there is still a significant gap between the requirements and state of the art performance. Here, we propose an on-chip source of time-multiplexed, heralded photons. Using quantum feedback control on a photon storage cavity with an optimized driving protocol, we estimate an on-demand efficiency of 99% and unheralded loss of order 1%, assuming high efficiency detectors and intrinsic cavity quality factors of order 10 8 . We further explain how temporal-and spectral-multiplexing can be used in parallel to significantly reduce device requirements if single photon frequency conversion is possible with efficiency in the same range of 99%.

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Ultralow-loss silicon ring resonators

Cited by 154 publications

References 22 publications

Fundamental limits on the losses of phase and amplitude optical actuators

Fundamental limits on the losses of phase and amplitude optical actuators

Topologically enabled ultrahigh-Q guided resonances robust to out-of-plane scattering

Temporally and spectrally multiplexed single photon source using quantum feedback control for scalable photonic quantum technologies

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