Silicon Photonics Chip for Inter-modal Four Wave Mixing on a Broad Wavelength Range

Signorini, Stefano; Finazzer, Matteo; Bernard, Martino; Ghulinyan, Mher; Pucker, G.; Pavesi, L.

doi:10.3389/fphy.2019.00128

Cited by 13 publications

(6 citation statements)

References 25 publications

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“…Recently, we demonstrated that inter-modal spontaneous four-wave mixing (SFWM) can be used in silicon waveguides to generate correlated pairs with one photon in the near-infrared (NIR) and the other in the MIR by using a standard C-band pump. 22,23 However, we never detected the MIR correlated photon. Instead, we inferred its existence by measuring the high-energy photon in the pair.…”

Section: Introductionmentioning

confidence: 64%

A silicon source of heralded single photons at 2 μm

et al. 2021

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Mid-infrared integrated quantum photonics is a promising platform for applications in sensing and metrology. However, there are only a few examples of on-chip single-photon sources at these wavelengths. These have limited performances with respect to their C-band counterparts. In this work, we demonstrate a new approach to generate heralded single photons in the mid-infrared on a silicon chip. By using a standard C-band pump, the inter-modal spontaneous four-wave mixing enables the generation of the herald idler at 1259.7 nm and the heralded signal at 2015 nm. The idler photon is easily detected with a common infrared single-photon detector while the signal photon is upconverted to visible before its detection. In this way, we are able to operate a mid-infrared source without the need for mid-infrared detectors and laser sources. By measuring a heralded g (2) of 0.23 ± 0.08, we demonstrate the single-photon behavior of the source as well as the feasibility of multi-photon coincidence measurements beyond 2 μm with our setup. The source exhibits a high-intrinsic heralding efficiency of (59 ± 5)%, a maximum coincidence to accidental ratio of 40.4 ± 0.9, and a generation probability of (0.70 ± 0.10) W −2 .

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Section: Introductionmentioning

confidence: 64%

A silicon source of heralded single photons at 2 μm

et al. 2021

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“…[19] The use of an intermodal process has three main advantages: far detuning from the pump and high non-degeneracy of idler and signal, filter-free narrowband generation, and high tunability of the signal wavelength while keeping the idler almost unchanged. [23,24] These peculiarities enable easy pump and Raman noise rejection, IR-MIR entangled pair generation with easy and broadband tunability of the MIR photon. [19] A detailed description of the setup is provided in Figure 1.…”

Section: Photonic Integrated Circuit Design and Characterizationmentioning

confidence: 99%

2 µm Ghost Spectroscopy with an Integrated Silicon Quantum Photonics Source

Sanna,

Rizzotti,

Signorini

et al. 2023

Adv Quantum Tech

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A ghost spectroscopy measurement with an entangled photon source is demonstrated. The transmission spectrum at the 2 m absorption peak of gaseous carbon dioxide (CO2) is measured in a highly noisy environment. Despite the noise, a high sensitivity is obtained, a value that is larger than the one found for a classical spectroscopy measurement performed in the same conditions. The probe photons are time‐energy correlated photon pairs generated through intermodal spontaneous four‐wave mixing in a silicon waveguide. This observation opens the way to low‐cost on‐chip MIR sensors insensitive to environmental noise.

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“…From Ref. [190]. (G) Optical bistability of the transmitted pump power as a function of the input power.…”

Section: Second-order Nonlinearitiesmentioning

confidence: 99%

“…A photonic circuit was designed and tested to demonstrate the concept and a large spectral translation of 800 nm between the idler and signal beams was achieved [190]. As an example, Figure 13F shows a stimulated FWM (sFWM) spectrum where an idler beam is spectrally translated into a signal beam.…”

Section: Intermodal Four Wave Mixingmentioning

confidence: 99%

Thirty Years in Silicon Photonics: A Personal View

Pavesi

2021

Front. Phys.

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Silicon Photonics, the technology where optical devices are fabricated by the mainstream microelectronic processing technology, was proposed almost 30 years ago. I joined this research field at its start. Initially, I concentrated on the main issue of the lack of a silicon laser. Room temperature visible emission from porous silicon first, and from silicon nanocrystals then, showed that optical gain is possible in low-dimensional silicon, but it is severely counterbalanced by nonlinear losses due to free carriers. Then, most of my research focus was on systems where photons show novel features such as Zener tunneling or Anderson localization. Here, the game was to engineer suitable dielectric environments (e.g., one-dimensional photonic crystals or waveguide-based microring resonators) to control photon propagation. Applications of low-dimensional silicon raised up in sensing (e.g., gas-sensing or bio-sensing) and photovoltaics. Interestingly, microring resonators emerged as the fundamental device for integrated photonic circuit since they allow studying the hermitian and non-hermitian physics of light propagation as well as demonstrating on-chip heavily integrated optical networks for reconfigurable switching applications or neural networks for optical signal processing. Finally, I witnessed the emergence of quantum photonic devices, where linear and nonlinear optical effects generate quantum states of light. Here, quantum random number generators or heralded single-photon sources are enabled by silicon photonics. All these developments are discussed in this review by following my own research path.

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Silicon Photonics Chip for Inter-modal Four Wave Mixing on a Broad Wavelength Range

Cited by 13 publications

References 25 publications

A silicon source of heralded single photons at 2 μm

A silicon source of heralded single photons at 2 μm

2 µm Ghost Spectroscopy with an Integrated Silicon Quantum Photonics Source

Thirty Years in Silicon Photonics: A Personal View

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