Squeezing on Momentum States for Atom Interferometry
Authors: Salvi L., Poli N., Vuletic V., Tino GM.
Autors Affiliation: [Salvi, Leonardo; Poli, Nicola; Tino, Guglielmo M.] Univ Firenze, Dipartimento Fis & Astron, INFN, Sez Firenze, Via Sansone 1, I-50019 Sesto Fiorentino, Italy and Univ Firenze, LENS, INFN, Sez Firenze, Via Sansone 1, I-50019 Sesto Fiorentino, Italy.
[Vuletic, Vladan] MIT, Dept Phys, Elect Res Lab, Cambridge, MA 02139 USA.
[Poli, Nicola] CNR, INO, Florence, Italy.
[Tino, Guglielmo M.] CNR, IFAC, Sesto Fiorentino, Italy.
Abstract: We propose and analyze a method that allows for the production of squeezed states of the atomic centerof- mass motion that can be injected into an atom interferometer. Our scheme employs dispersive probing in a ring resonator on a narrow transition in order to provide a collective measurement of the relative population of two momentum states. We show that this method is applicable to a Bragg diffraction-based strontium atom interferometer with large diffraction orders. This technique can be extended also to small diffraction orders and large atom numbers N by inducing atomic transparency at the frequency of the probe field, reaching an interferometer phase resolution scaling Delta phi similar to N-3/4. We show that for realistic parameters it is possible to obtain a 20 dB gain in interferometer phase estimation compared to the standard quantum limit. Our method is applicable to other atomic species where a narrow transition is available or can be synthesized.
Journal/Review: PHYSICAL REVIEW LETTERS
Volume: 120 (3) Pages from: 033601-1 to: 033601-5
KeyWords: standard quantum limit; entanglement; noise; spectroscopy; timesDOI: 10.1103/PhysRevLett.120.033601Citations: 6data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2020-06-28References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here