Cold atoms close to surfaces: Measuring magnetic field roughness and disorder potentials

Peter Krüger*, Stephan Wildermuth, Sebastian Hofferberth, L. Mauritz Andersson, Sönke Groth, Israel Bar-Joseph, Jörg Schmiedmayer

*Kontaktforfatter for dette arbejde

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

Resumé

Microscopic atom optical devices integrated on atom chips allow to precisely control and manipulate ultra-cold (T < 1 νK) neutral atoms and Bose-Einstein condensates (BECs) close to surfaces. The relevant energy scale of a BEC is extremely small (down to < 10-11 eV). Consequently, BECs can be utilized as a sensor for variations of the potential energy of the atoms close to the surface. Here we describe how to use trapped atoms as a measurement device and analyze the performance and flexibility of the field sensor. We demonstrate microscopic magnetic imaging with simultaneous high spatial resolution (3 νm) and high field sensitivity (4 nT). With one dimensional BECs, we probe the magnetic field variations close to the surface at distances down to a few microns. Measurements of the magnetic field of a 100 νm wide current carrying wire imply that the magnetic field variations stem from residual variations of the current flow direction, resulting from local properties of the wire. These disorder potentials found near lithographically fabricated wires are two orders of magnitude smaller than those measured close to electroplated conductors.

OriginalsprogEngelsk
BogserieJournal of Physics: Conference Series
Vol/bind19
Udgave nummer1
Sider (fra-til)56-65
Antal sider10
ISSN1742-6588
DOI
StatusUdgivet - 1. jan. 2005

Fingeraftryk

Bose-Einstein condensates
roughness
disorders
wire
magnetic fields
atoms
sensors
neutral atoms
stems
flexibility
conductors
spatial resolution
potential energy
chips
probes
high resolution
energy

Citer dette

Krüger, Peter ; Wildermuth, Stephan ; Hofferberth, Sebastian ; Andersson, L. Mauritz ; Groth, Sönke ; Bar-Joseph, Israel ; Schmiedmayer, Jörg. / Cold atoms close to surfaces : Measuring magnetic field roughness and disorder potentials. I: Journal of Physics: Conference Series. 2005 ; Bind 19, Nr. 1. s. 56-65.
@article{00513ebec08140018f0bfb3e724645f5,
title = "Cold atoms close to surfaces: Measuring magnetic field roughness and disorder potentials",
abstract = "Microscopic atom optical devices integrated on atom chips allow to precisely control and manipulate ultra-cold (T < 1 νK) neutral atoms and Bose-Einstein condensates (BECs) close to surfaces. The relevant energy scale of a BEC is extremely small (down to < 10-11 eV). Consequently, BECs can be utilized as a sensor for variations of the potential energy of the atoms close to the surface. Here we describe how to use trapped atoms as a measurement device and analyze the performance and flexibility of the field sensor. We demonstrate microscopic magnetic imaging with simultaneous high spatial resolution (3 νm) and high field sensitivity (4 nT). With one dimensional BECs, we probe the magnetic field variations close to the surface at distances down to a few microns. Measurements of the magnetic field of a 100 νm wide current carrying wire imply that the magnetic field variations stem from residual variations of the current flow direction, resulting from local properties of the wire. These disorder potentials found near lithographically fabricated wires are two orders of magnitude smaller than those measured close to electroplated conductors.",
author = "Peter Kr{\"u}ger and Stephan Wildermuth and Sebastian Hofferberth and Andersson, {L. Mauritz} and S{\"o}nke Groth and Israel Bar-Joseph and J{\"o}rg Schmiedmayer",
year = "2005",
month = "1",
day = "1",
doi = "10.1088/1742-6596/19/1/009",
language = "English",
volume = "19",
pages = "56--65",
journal = "Journal of Physics: Conference Series (Online)",
issn = "1742-6596",
publisher = "IOP Publishing",
number = "1",

}

Krüger, P, Wildermuth, S, Hofferberth, S, Andersson, LM, Groth, S, Bar-Joseph, I & Schmiedmayer, J 2005, 'Cold atoms close to surfaces: Measuring magnetic field roughness and disorder potentials', Journal of Physics: Conference Series, bind 19, nr. 1, s. 56-65. https://doi.org/10.1088/1742-6596/19/1/009

Cold atoms close to surfaces : Measuring magnetic field roughness and disorder potentials. / Krüger, Peter; Wildermuth, Stephan; Hofferberth, Sebastian; Andersson, L. Mauritz; Groth, Sönke; Bar-Joseph, Israel; Schmiedmayer, Jörg.

I: Journal of Physics: Conference Series, Bind 19, Nr. 1, 01.01.2005, s. 56-65.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - Cold atoms close to surfaces

T2 - Measuring magnetic field roughness and disorder potentials

AU - Krüger, Peter

AU - Wildermuth, Stephan

AU - Hofferberth, Sebastian

AU - Andersson, L. Mauritz

AU - Groth, Sönke

AU - Bar-Joseph, Israel

AU - Schmiedmayer, Jörg

PY - 2005/1/1

Y1 - 2005/1/1

N2 - Microscopic atom optical devices integrated on atom chips allow to precisely control and manipulate ultra-cold (T < 1 νK) neutral atoms and Bose-Einstein condensates (BECs) close to surfaces. The relevant energy scale of a BEC is extremely small (down to < 10-11 eV). Consequently, BECs can be utilized as a sensor for variations of the potential energy of the atoms close to the surface. Here we describe how to use trapped atoms as a measurement device and analyze the performance and flexibility of the field sensor. We demonstrate microscopic magnetic imaging with simultaneous high spatial resolution (3 νm) and high field sensitivity (4 nT). With one dimensional BECs, we probe the magnetic field variations close to the surface at distances down to a few microns. Measurements of the magnetic field of a 100 νm wide current carrying wire imply that the magnetic field variations stem from residual variations of the current flow direction, resulting from local properties of the wire. These disorder potentials found near lithographically fabricated wires are two orders of magnitude smaller than those measured close to electroplated conductors.

AB - Microscopic atom optical devices integrated on atom chips allow to precisely control and manipulate ultra-cold (T < 1 νK) neutral atoms and Bose-Einstein condensates (BECs) close to surfaces. The relevant energy scale of a BEC is extremely small (down to < 10-11 eV). Consequently, BECs can be utilized as a sensor for variations of the potential energy of the atoms close to the surface. Here we describe how to use trapped atoms as a measurement device and analyze the performance and flexibility of the field sensor. We demonstrate microscopic magnetic imaging with simultaneous high spatial resolution (3 νm) and high field sensitivity (4 nT). With one dimensional BECs, we probe the magnetic field variations close to the surface at distances down to a few microns. Measurements of the magnetic field of a 100 νm wide current carrying wire imply that the magnetic field variations stem from residual variations of the current flow direction, resulting from local properties of the wire. These disorder potentials found near lithographically fabricated wires are two orders of magnitude smaller than those measured close to electroplated conductors.

UR - http://www.scopus.com/inward/record.url?scp=24644463388&partnerID=8YFLogxK

U2 - 10.1088/1742-6596/19/1/009

DO - 10.1088/1742-6596/19/1/009

M3 - Journal article

AN - SCOPUS:24644463388

VL - 19

SP - 56

EP - 65

JO - Journal of Physics: Conference Series (Online)

JF - Journal of Physics: Conference Series (Online)

SN - 1742-6596

IS - 1

ER -