Conveners
Squeezing, Topology, Quantum Information: Ideas for beyond 3G Part 1
- Shtefan Danilishin (University of Glasgow)
- Yanbei Chen
As straylight is a dominating limitation for the sensitivity of gravitational wave detectors, we investigate new laser operation concepts and interferometer topologies for a more straylight-resilient detector configuration.
Our main focus is the use of tunable coherence realized by phase modulation following a pseudo-random-sequence on the interferometer laser.
While this breaks the...
We present the results of ongoing experimental work on a table-top prototype for a stable optomechanical phase-insensitive quantum filter. Recent studies have shown that such filters can increase the bandwidth-sensitivity product of both kilometre-scale GW detectors and table-top systems. Our prototype, the Birmingham quantum amplifier, is based on the optomechanical interaction between a...
Conventional design processes for complex (quantum) optics experiments and devices, such as gravitational wave detectors, rely heavily on the expertise and intuition of human researchers. However, given the vast and often counterintuitive search space of potential experimental configurations, alternative approaches may prove beneficial. The advent of powerful computational algorithms and...
Squeezed light has achieved remarkable success in enhancing the sensitivity of GW detectors, with up to 6dB improvements in GEO600 and frequency-dependent squeezing in other detectors. However, this demands extremely high quality for optical systems, as even minimal loss significantly reduces quantum enhancement. This is particularly relevant for next-generation detectors with other...
A theoretical two-carrier heterodyne detection scheme, which agrees with the sensitivity performance of homodyne readout for a gravitational wave detector, has been recently proposed. This scheme, with careful choice of readout/heterodyne frequency, is predicted to avoid low frequency noises which generally plague audio band squeezing experiments such as scattered light, control noise or...
