Measurements and analysis of response function of cold atoms in optical molasses

被引：6

作者：

Bhar, Subhajit ^{[1
]}

Swar, Maheswar ^{[1
]}

Satpathi, Urbashi ^{[2
]}

Sinha, Supurna ^{[1
]}

Sorkin, Rafael ^{[3
]}

Chaudhuri, Saptarishi ^{[1
]}

Roy, Sanjukta ^{[1
]}

机构：

[1] Raman Res Inst, CV Raman Ave, Bangalore 560080, Karnataka, India

[2] Tata Inst Fundamental Res, Int Ctr Theoret Sci, Bangalore 560089, Karnataka, India

[3] Perimeter Inst Theoret Phys, 31 Caroline St North, Waterloo, ON N2L 2Y5, Canada

来源：

OPTICS CONTINUUM | 2022年 / 1卷 / 02期

关键词：

BROWNIAN-MOTION;

D O I：

10.1364/OPTCON.448535

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report our experimental measurements and theoretical analysis of the position response function of cold atoms in a magneto-optical trap (MOT) by applying a transient homogeneous magnetic field as a perturbing force. We observe a transition from a damped oscillatory motion to an over-damped relaxation, stemming from a competition between the viscous drag provided by the optical molasses and the restoring force of the MOT. Our observations are in agreement with the predictions of our model based on the Langevin equation. We also study the diffusion of the atomic cloud in the optical molasses and find the measured value of diffusion coefficient matching with the prediction of our theoretical model. (c) 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement

引用

页码：171 / 188

页数：18

共 50 条

[1] OPTICAL MOLASSES - COLD ATOMS FOR PRECISION-MEASUREMENTS
PHILLIPS, WD
LETT, PD
ROLSTON, SL
TANNER, CE
WATTS, RN
WESTBROOK, CI
SALOMON, C
DALIBARD, J
CLAIRON, A
GUELLATI, S
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT, 1991, 40 (02) : 78 - 80
[2] Nonlinear optical response of cold atoms
Hiroshima, T
Yamamoto, Y
COHERENCE AND QUANTUM OPTICS VII, 1996, : 387 - 388
[3] Nonlinear optical response of cold atoms
Hiroshima, T
Yamamoto, Y
QUANTUM COHERENCE AND DECOHERENCE: FOUNDATIONS OF QUANTUM MECHANICS IN THE LIGHT OF NEW TECHNOLOGY, 1996, : 35 - 38
[4] Nonlinear optical response of cold atoms
Hiroshima, T
Yamamoto, Y
PHYSICAL REVIEW A, 1996, 53 (02): : 1048 - 1051
[5] Obtaining ultra-cold atoms by optical molasses directly from vapor
Hou, J.
Wang, X.
Chen, X.
Yang, D.
Wang, Y.
Beijing Daxue Xuebao Ziran Kexue Ban/Acta Scientiarum uaturalium Universitatis Pekinensis, 2001, 37 (05): : 716 - 720
[6] OPTICAL MOLASSES - THE COLDEST ATOMS EVER
PHILLIPS, WD
LETT, PD
ROLSTON, SL
TANNER, CE
WATTS, RN
WESTBROOK, CI
SALOMON, C
DALIBARD, J
CLAIRON, A
GUELLATI, S
PHYSICA SCRIPTA, 1991, T34 : 20 - 22
[7] OPTICAL MOLASSES AND MULTILEVEL ATOMS - THEORY
UNGAR, PJ
WEISS, DS
RIIS, E
CHU, S
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, 1989, 6 (11) : 2058 - 2071
[8] OPTICAL MOLASSES AND MULTILEVEL ATOMS - EXPERIMENT
WEISS, DS
RIIS, E
SHEVY, Y
UNGAR, PJ
CHU, S
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, 1989, 6 (11) : 2072 - 2083
[9] Gravity field measurements using cold atoms with direct optical readout
Matsko, A.B.
Yu, N.
Maleki, L.
Physical Review A - Atomic, Molecular, and Optical Physics, 2003, 67 (04): : 438191 - 438191
[10] Cold beam of isotopically pure Yb atoms by deflection using 1D-optical molasses
K D RATHOD
P K SINGH
VASANT NATARAJAN
Pramana, 2014, 83 : 387 - 393

← 1 2 3 4 5 →