Roura, Albert (2023) Probing gravity with two-photon interference of frequency-entangled pairs. 2023 NASA Fundamental Physics Workshop, 2023-05-23 - 2023-05-25, Santa Barbara, Kalifornien, USA.
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Kurzfassung
In recent years there has been a growing interest in probing the interplay between quantum mechanics and general relativity with delocalized quantum superpositions where the two components of the superposition experience different relativistic effects [1, 2]. Notably, atom interferometry experiments in Stanford's 10-m atomic fountain have measured the effect of a non-vanishing proper-time difference due to spacetime curvature on the interference signal [3, 4]. However, these experiments can be alternatively described in terms of non-relativistic quantum mechanics and Newtonian gravity. In contrast, quantum interference experiments with relativistic particles such as photons, which require a quantum field theory (QFT) treatment, offer the possibility of exploring a regime where both quantum mechanics and general relativity play an essential role. In this talk I will focus on gravitational-redshift measurements relying on two-photon interference of frequency-entangled pairs. Such interferometry experiments, which have no classical analog, can be realized with optical links to low-Earth-orbit spacecrafts employing quantum states of light, and will allow directly testing, for the first time, aspects of QFT in curved spacetime [5]. [1] M. Zych et al., Nat. Comm. 2, 505 (2011). [2] A. Roura, Phys. Rev. X 10, 021014 (2020). [3] C. Overstreet et al., Science 375, 226 (2022). [4] A. Roura, Science 375, 142 (2022). [5] M. Mohageg et al., EPJ Quant. Tech. 9, 25 (2022).
elib-URL des Eintrags: | https://elib.dlr.de/195284/ | ||||||||
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Dokumentart: | Konferenzbeitrag (Vortrag) | ||||||||
Titel: | Probing gravity with two-photon interference of frequency-entangled pairs | ||||||||
Autoren: |
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Datum: | 24 Mai 2023 | ||||||||
Referierte Publikation: | Nein | ||||||||
Open Access: | Ja | ||||||||
Gold Open Access: | Nein | ||||||||
In SCOPUS: | Nein | ||||||||
In ISI Web of Science: | Nein | ||||||||
Status: | veröffentlicht | ||||||||
Stichwörter: | Gravitation, general relativistic effects, gravitational redshift measurements, two-photon interference, quantum entanglement, space quantum links, quantum field theory in curved spacetime | ||||||||
Veranstaltungstitel: | 2023 NASA Fundamental Physics Workshop | ||||||||
Veranstaltungsort: | Santa Barbara, Kalifornien, USA | ||||||||
Veranstaltungsart: | internationale Konferenz | ||||||||
Veranstaltungsbeginn: | 23 Mai 2023 | ||||||||
Veranstaltungsende: | 25 Mai 2023 | ||||||||
Veranstalter : | NASA | ||||||||
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||
HGF - Programm: | Raumfahrt | ||||||||
HGF - Programmthema: | Kommunikation, Navigation, Quantentechnologien | ||||||||
DLR - Schwerpunkt: | Raumfahrt | ||||||||
DLR - Forschungsgebiet: | R KNQ - Kommunikation, Navigation, Quantentechnologie | ||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | R - Projekt Q-GRAV – Schnittstelle Quanten und Gravitation | ||||||||
Standort: | Ulm | ||||||||
Institute & Einrichtungen: | Institut für Quantentechnologien > Theoretische Quantenphysik | ||||||||
Hinterlegt von: | Roura, Dr. Albert | ||||||||
Hinterlegt am: | 06 Jun 2023 18:03 | ||||||||
Letzte Änderung: | 24 Apr 2024 20:55 |
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