Multimode trapped interferometer with noninteracting Bose-Einstein condensates

被引：4

作者：

Masi, Leonardo ^{[1
,2
]}

Petrucciani, Tommaso ^{[2
,3
]}

Burchianti, Alessia ^{[1
,2
]}

Fort, Chiara ^{[1
,2
,3
]}

Inguscio, Massimo ^{[1
,2
,4
]}

Marconi, Lorenzo ^{[1
]}

Modugno, Giovanni ^{[1
,2
,3
]}

Preti, Niccolo ^{[3
]}

Trypogeorgos, Dimitrios ^{[5
]}

Fattori, Marco ^{[1
,2
,3
]}

Minardi, Francesco ^{[1
,2
,6
]}

机构：

[1] Ist Nazl Ottica, CNR INO, I-50019 Sesto Fiorentino, Italy

[2] European Lab Nonlinear Spect LENS, I-50019 Sesto Fiorentino, Italy

[3] Univ Firenze, Dipartimento Fis & Astron, I-50019 Sesto Fiorentino, Italy

[4] Univ Roma, Dipartimento Ingn, Campus Biomed, I-00128 Rome, Italy

[5] Inst Nanotechnol, CNR Nanotec, I-73100 Lecce, Italy

[6] Univ Bologna, Dipartimento Fis & Astron, I-40127 Bologna, Italy

来源：

PHYSICAL REVIEW RESEARCH | 2021年 / 3卷 / 04期

基金：

欧盟地平线“2020”;

关键词：

DOUBLE-WELL; ATOM; CONSTANT;

D O I：

10.1103/PhysRevResearch.3.043188

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We experimentally demonstrate a multimode interferometer comprising a Bose-Einstein condensate of K-39 atoms trapped in a harmonic potential, where the interatomic interaction can be canceled exploiting Feshbach resonances. Kapitza-Dirac diffraction from an optical lattice coherently splits the BEC in multiple momentum components equally spaced that form different interferometric paths, with trajectories closed by the trapping harmonic potential. We investigate two different interferometric schemes, where the recombination pulse is applied after a full or half oscillation in the confining potential. We find that the relative amplitudes of the momentum components at the interferometer output are sensitive to external forces, through the induced displacement of the harmonic potential with respect to the optical lattice. We show how to calibrate the interferometer, fully characterize its output, and discuss perspective improvements.

引用

页数：7

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