H2020Индивидуална стипендия2018–2020

ShaMROCk · Superconductive MiR phOton Counter

„Хоризонт 2020“ — Действия „Мария Склодовска-Кюри“

Период: 2018-06-01 → 2020-05-31
Финансиране от ЕС: 168 277 €
Участници: 1
Схема: MSCA-IF-EF-ST

Линиите свързват координатора с партньорите.

Накратко на български

Свръхпроводящи детектори се разработват за улавяне на единични фотони в средната инфрачервена област, например за анализ на газове и молекули. Това ще подобри точността на спектроскопията и обработката на квантова информация чрез използването на силициев карбид.

Този кратък обзор е генериран от изкуствен интелект

Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.

Резултати накратко

Superconductive MiR phOton Counter

The developments of novel technologies as well as the advancements in science knowledge have frequently been led by improvements in measurement capacity. Single photon detectors (SPDs) compose one of the most attractive devices due to the ability of registering light at its fundamental level. This is an extremely demanding challenge since the energy of a single photon in the near-infrared range is in the order of 10^(-19)J and therefore SPDs have to be exceptionally sensible in order to produce an electronic signal upon the arrival of one photon. Even though competitive SPD technologies are available for the visible and in the near-infrared range, the mid-infrared (MIR) spectral region lacks in a performant analogue. A detector able to register individual photons in this wavelength range (2.5-25μm) would be extremely desirable for many areas of technology and science, from analysis in industry to advanced research applications. In the MIR spectral range reside vibrational modes of several molecules as well as fundamental absorption bands of gases, intersubband transitions in quantum wells and specific fingerprints of chemical species. A detector sensible at single photon level would greatly boost the field of vibrational and MIR spectroscopy. By taking advantage of superconducting nanowire SPDs (SNSPDs), the goal of ShaMROCk is to realize an efficient, fast and accurate SPD operating in the MIR with a minimum number of dark counts. This tantalizing perspective can be reached by merging SNSPD technology with Silicon Carbide (SiC) photonics. Due to the presence of quantum emitters, the development of SNSPDs on top SiC photonic components is additionally important as this material is emerging as scalable platform for quantum information processing with photons.

Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз

Цел на проекта

Quantum measurements based on single photon detectors (SPDs) can be efficiently carried out in the visible and near-infrared spectra due to the presence of two well-established technologies named silicon avalanche photodiodes and superconductive nanowire SPDs (SNSPDs). However, the mid-infrared (MIR) spectral range suffers from the absence of a fast SPD with high system detection efficiency (SDE) due to the lack of a competitive semiconductor technology or the poor absorption of the SNSPD systems showed so far. Vibrational modes of molecules and absorption bands of gases resides in this wavelength range, making a detector sensible to MIR single photons extremely sought for sensing and vibrational spectroscopy. Additionally, this wavelength range can be used efficiently for free-space QKD, being robust against adverse weather conditions. These are only but a few of the numerous applications that would benefit or be enabled by a performant SPD. The research goal of this proposal is to realize a Superconductive MiR phOton Counter (ShaMROCk) that outclasses all the existing technologies in terms of SDE, providing a solid platform for additional functionalities. SNSPDs realized so far suffered from the top-coupling approach that limits the interaction length between photons and the detector active area since the large diffraction limited mode of MIR light and the lack of MIR optical cavities. On the other side, in ShaMROCk I intend to integrate SNSPDs on top of MIR waveguides, realized using silicon carbide. All the light propagating inside the waveguide, evanescently coupled to the active are of the detector, can be absorbed in this way. The SDE is therefore limited by the efficiency with which light is coupled from a fiber to a waveguide. Preliminary results shows that ShaMROCk could provide a SDE twenty times higher than top-coupling SNSPD and two order of magnitude higher than other pursued technologies. This project will pave the way for MIR quantum measurements.

Оригинален текст от CORDIS (на английски).

Участници

CONSIGLIO NAZIONALE DELLE RICERCHE · RomaКоординаторИталия