تقرير
Quantum Frequency Interferometry: with applications ranging from gravitational wave detection to dark matter searches
| العنوان: | Quantum Frequency Interferometry: with applications ranging from gravitational wave detection to dark matter searches |
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| المؤلفون: | Howl, Richard, Fuentes, Ivette |
| سنة النشر: | 2021 |
| المجموعة: | Condensed Matter General Relativity and Quantum Cosmology Quantum Physics |
| مصطلحات موضوعية: | Quantum Physics, Condensed Matter - Quantum Gases, General Relativity and Quantum Cosmology |
| الوصف: | We introduce a quantum interferometric scheme that uses states that are sharp in frequency and delocalized in position. The states are frequency modes of a quantum field that is trapped at all times in a finite volume potential, such as a small box potential. This allows for significant miniaturization of interferometric devices. Since the modes are in contact at all times, it is possible to estimate physical parameters of global multi-mode channels. As an example, we introduce a three-mode scheme and calculate precision bounds in the estimation of parameters of two-mode Gaussian channels. This scheme can be implemented in several systems, including superconducting circuits, cavity-QED and cold atoms. We consider a concrete implementation using the ground state and two phononic modes of a trapped Bose-Einstein condensate. We apply this to show that frequency interferometry can improve the sensitivity of phononic gravitational waves detectors by several orders of magnitude, even in the case that squeezing is much smaller than assumed previously and that the system suffers from short phononic lifetimes. Other applications range from magnetometry, gravimetry and gradiometry to dark matter/energy searches. Comment: This paper is an update and revision of arXiv:1902.09883. We changed the focus of the presentation, added background, calculations and figures. Substantial parts of it were re-written to emphasis key concepts of relevance to the research program of the authors |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2103.02618 |
| رقم الأكسشن: | edsarx.2103.02618 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |