103 citations · 208 across the 14 of their papers we have counts for
14 papers
Extending Ground-Based Gravitational-Wave Sensitivity to 5 Hz
Amit Singh Ubhi, Lari Koponen, Jiri Smetana +11
Extending the sensitivity of terrestrial gravitational-wave detectors below 20 Hz is a long-standing challenge, limited by ground motion and inertial sensing noise. In this letter,…
First result for testing semiclassical gravity effect with a torsion balance
Tianliang Yan, Yubao Liu, Leonid Prokhorov +5
The Schrödinger-Newton equation, a theoretical framework connecting quantum mechanics with classical gravity, predicts that gravity may induce measurable deviations in low-frequenc…
Sensitivity and control of a 6-axis fused-silica seismometer
Jiri Smetana, Amit Singh Ubhi, Emilia Chick +12
We present a pair of seismometers capable of measurement in all six axes of rigid motion. The vacuum-compatible devices implement compact interferometric displacement sensors to su…
A High-Finesse Suspended Interferometric Sensor for Macroscopic Quantum Mechanics with Femtometre Sensitivity
Jiri Smetana, Tianliang Yan, Vincent Boyer +1
We present an interferometric sensor for investigating macroscopic quantum mechanics on a table-top scale. The sensor consists of pair of suspended optical cavities with a finesse…
DarkGEO: A Large-Scale Laser-Interferometric Axion Detector
Joscha Heinze, Alex Gill, Artemiy Dmitriev +8
Axions and axion-like particles (ALPs) are leading candidates for dark matter. They are well motivated in many extensions of the Standard Model and supported by astronomical observ…
Design and sensitivity of a 6-axis seismometer for gravitational wave observatories
Leonid Prokhorov, Sam Cooper, Amit Singh Ubhi +13
We present the design, control system, and noise analysis of a 6-axis seismometer comprising a mass suspended by a single fused silica fibre. We utilise custom-made, compact Michel…
Nonlinearities in Long-Range Compact Michelson Interferometers
Jiri Smetana, Chiara Di Fronzo, Anthony Amorosi +1
Compact Michelson interferometers are well positioned to replace existing displacement sensors in the readout of seismometers and suspension systems, such as those used in contempo…
First results of the Laser-Interferometric Detector for Axions (LIDA)
Joscha Heinze, Alex Gill, Artemiy Dmitriev +5
We present the operating principle and the first observing run of a novel kind of direct detector for axions and axion-like particles in the galactic halo. Sensitive to the polaris…
Design of a tabletop interferometer with quantum amplification
Jiri Smetana, Artemiy Dmitriev, Chunnong Zhao +2
The sensitivity of laser interferometers is fundamentally limited by the quantum nature of light. Recent theoretical studies have opened a new avenue to enhance their quantum-limit…
Compact Michelson interferometers with subpicometer sensitivity
Jiri Smetana, Rebecca Walters, Sophie Bauchinger +11
The network of interferometric gravitational-wave observatories has successfully detected tens of astrophysical signals since 2015. In this paper, we experimentally investigate com…
A six degree-of-freedom fused silica seismometer: Design and tests of a metal prototype
Amit Singh Ubhi, Jiri Smetana, Teng Zhang +6
Ground vibrations couple to the longitudinal and angular motion of the aLIGO test masses and limit the observatory sensitivity below 30\,Hz. Novel inertial sensors have the potenti…
Enhancing interferometer sensitivity without sacrificing bandwidth and stability: beyond single-mode and resolved-sideband approximation
Xiang Li, Jiri Smetana, Amit Singh Ubhi +5
Quantum noise limits the sensitivity of precision measurement devices, such as laser interferometer gravitational-wave observatories and axion detectors. In the shot-noise-limited…
A two-carrier scheme: evading the 3dB quantum penalty of heterodyne readout in gravitational-wave detectors
Teng Zhang, Philip Jones, Jiří Smetana +4
Precision measurements using traditional heterodyne readout suffer a 3dB quantum noise penalty compared with homodyne readout. The extra noise is caused by the quantum fluctuations…
AIMS - A new tool for stellar parameter determinations using asteroseismic constraints
B. M. Rendle, G. Buldgen, A. Miglio +12
A key aspect in the determination of stellar properties is the comparison of observational constraints with predictions from stellar models. Asteroseismic Inference on a Massive Sc…