Speedmeter: Quantum back-action noise-free interferometry for improving the science capabilities of future gravitational wave observatories

Informazioni relative al progetto

SPEED

ID dell’accordo di sovvenzione: 101019978

DOI

10.3030/101019978

Data della firma CE 13 Agosto 2021

Data di avvio 1 Ottobre 2021

Data di completamento 30 Settembre 2026

Finanziato da

• EXCELLENT SCIENCE - European Research Council (ERC)

Costo totale

€ 2 175 941,00

Contributo UE

€ 2 175 941,00

Coordinato da

UNIVERSITEIT MAASTRICHT
Netherlands

Periodic Reporting for period 2 - SPEED (Speedmeter: Quantum back-action noise-free interferometry for improving the science capabilities of future gravitational wave observatories)

Periodo di rendicontazione: 2023-04-01 al 2024-09-30

Sintesi del contesto e degli obiettivi generali del progetto

This project aims at investigating a new measurement concept, so-called speedmeter, for gravitational wave detectors. If successful it will enable future gravitational wave observatories as the European Einstein Telescope to observe the Universe even further back in time towards the Big Bang.

Lavoro eseguito dall’inizio del progetto fino alla fine del periodo coperto dalla relazione e principali risultati finora ottenuti

We developed various theoretical and experimental building blocks required for exploring a practical implementation of the speedmeter concepts. This includes new simulation tools, development of a new type of optical thin-film coating as well as prrof-of-concept table top experiments.

Progressi oltre lo stato dell’arte e potenziale impatto previsto (incluso l’impatto socioeconomico e le implicazioni sociali più ampie del progetto fino ad ora)

1. Integration of polarization capabilities into the FINESSE software;
2. Development of an improved optomechanical design for squeezed light sources;
3. Development of a speedmeter inspired new quantum noise reduction scheme for gravitational wave detectors, featuring the potential benefit of not requiring kilometer long optical filter cavities. "Frequency-dependent squeezing for gravitational-wave detection through quantum teleportation", https://doi.org/10.48550/arXiv.2401.04295;

Team members working on the characterisation of the all polarisation coatings

Impression of the EPR speedmeter proof-of-concept setup