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Mesoscopic interference for metric and curvature & gravitational wave detection
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Marshman, Ryan J., Mazumdar, Anupam, Morley, Gavin W., Barker, Peter F., Hoekstra, Steven and Bose, Sougato (2020) Mesoscopic interference for metric and curvature & gravitational wave detection. New Journal of Physics, 22 . 083012. doi:10.1088/1367-2630/ab9f6c ISSN 1367-2630.
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WRAP-Mesoscopic-interference-metric-curvature-gravitational-wave-detection-Morley-2020.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons Attribution 4.0. Download (2033Kb) | Preview |
Official URL: https://doi.org/10.1088/1367-2630/ab9f6c
Abstract
A compact detector for space-time metric and curvature is highly desirable. Here we show that quantum spatial superpositions of mesoscopic objects could be exploited to create such a detector. We propose a specific form for such a detector and analyse how asymmetries in its design allow it to directly couple to the curvature. Moreover, we also find that its non-symmetric construction and the large mass of the interfered objects, enable the detection gravitational waves (GWs). Finally, we discuss how the construction of such a detector is in principle possible with a combination of state of the art techniques while taking into account the known sources of decoherence and noise. To this end, we use Stern–Gerlach interferometry with masses ~10−17 kg, where the interferometric signal is extracted by measuring spins and show that accelerations as low as 5 × 10−15 ms−2 Hz−1/2, as well as the frame dragging effects caused by the Earth, could be sensed. The GW sensitivity scales differently from the stray acceleration sensitivity, a unique feature of the proposed interferometer. We identify mitigation mechanisms for the known sources of noise, namely gravity gradient noise, uncertainty principle and electro-magnetic forces and show that it could potentially lead to a metre sized, orientable and vibrational noise (thermal/seismic) resilient detector of mid (ground based) and low (space based) frequency GWs from massive binaries (the predicted regimes are similar to those targeted by atom interferometers and LISA).
| Item Type: | Journal Article | |||||||||||||||||||||
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| Subjects: | Q Science > QC Physics | |||||||||||||||||||||
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | |||||||||||||||||||||
| Library of Congress Subject Headings (LCSH): | Interferometry , Atom interferometry, General relativity (Physics) , Gravitational waves | |||||||||||||||||||||
| Journal or Publication Title: | New Journal of Physics | |||||||||||||||||||||
| Publisher: | IOP Publishing | |||||||||||||||||||||
| ISSN: | 1367-2630 | |||||||||||||||||||||
| Official Date: | 6 August 2020 | |||||||||||||||||||||
| Dates: |
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| Volume: | 22 | |||||||||||||||||||||
| Article Number: | 083012 | |||||||||||||||||||||
| DOI: | 10.1088/1367-2630/ab9f6c | |||||||||||||||||||||
| Status: | Peer Reviewed | |||||||||||||||||||||
| Publication Status: | Published | |||||||||||||||||||||
| Access rights to Published version: | Open Access (Creative Commons) | |||||||||||||||||||||
| Date of first compliant deposit: | 2 November 2020 | |||||||||||||||||||||
| Date of first compliant Open Access: | 4 November 2020 | |||||||||||||||||||||
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| Is Part Of: | 1 | |||||||||||||||||||||
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