Search Results - "de Mirandes, E"
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1
Collisionally induced transport in periodic potentials
Published in Physical review letters (23-04-2004)“…We study the transport of ultracold atoms in a tight optical lattice. For identical fermions the system is insulating under an external force while for bosonic…”
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2
The BIPM Watt Balance: Improvements and Developments
Published in IEEE transactions on instrumentation and measurement (01-07-2011)“…This paper summarizes the various improvements to and new developments for the Bureau International des Poids et Mesures (BIPM) watt balance, which have been…”
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Journal Article -
3
Atom interferometry with trapped Fermi gases
Published in Physical review letters (11-06-2004)“…We realize an interferometer with an atomic Fermi gas trapped in an optical lattice under the influence of gravity. The single-particle interference between…”
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4
Insulating behavior of a trapped ideal Fermi gas
Published in Physical review letters (17-09-2004)“…We investigate theoretically and experimentally the center-of-mass motion of an ideal Fermi gas in a combined periodic and harmonic potential. We find a…”
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5
Progress on the BIPM watt balance
Published in 2016 Conference on Precision Electromagnetic Measurements (CPEM 2016) (01-07-2016)“…This paper reports the latest advances made on the BIPM watt balance experiment. The improved apparatus is now fully assembled. The new, open support structure…”
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Conference Proceeding Journal Article -
6
Progress on the BIPM Watt Balance
Published in IEEE transactions on instrumentation and measurement (01-04-2009)“…Since beginning the construction early in 2005, considerable progress has been made on the watt balance of the Bureau International des Poids et Mesures…”
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7
Atom interferometry based on light pulses: Application to the high precision measurement of the ratio h/m and the determination of the fine structure constant
Published in The European physical journal. ST, Special topics (01-06-2009)“…In this paper we present a short overview of atom interferometry based on light pulses. We discuss different implementations and their applications for high…”
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8
Radio frequency selective addressing of localized atoms in a periodic potential
Published in Physical review letters (17-09-2004)“…We study the localization and addressability of ultracold atoms in a combined parabolic and periodic potential. Such a potential supports the existence of…”
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9
Expansion of a Fermi gas interacting with a Bose-Einstein condensate
Published in Physical review letters (09-04-2004)“…We study the expansion of an atomic Fermi gas interacting attractively with a Bose-Einstein condensate. We observe a slower evolution of the radial-to-axial…”
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10
Superconducting coil system to study the behavior of superconducting coils for a cryogenic watt balance
Published in 2012 Conference on Precision electromagnetic Measurements (01-07-2012)“…A small scale superconducting coil system has been built at the BIPM. It is a first prototype to study the moving phase of a watt balance where the test coil…”
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Conference Proceeding -
11
Update from the BIPM watt balance
Published in 29th Conference on Precision Electromagnetic Measurements (CPEM 2014) (01-08-2014)“…This paper reports the latest progress made on the BIPM watt balance project. The type A uncertainty of the Planck constant measurements was reduced from 1.4…”
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Conference Proceeding Journal Article -
12
A bias source for the voltage reference of the BIPM watt balance
Published in 2012 Conference on Precision electromagnetic Measurements (01-07-2012)“…We have developed a programmable current bias source to set the voltage output of a Josephson Voltage Standard that will be operated on the watt balance…”
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Conference Proceeding -
13
Status of the BIPM watt balance
Published in 2012 Conference on Precision electromagnetic Measurements (01-07-2012)“…This paper presents progress on the BIPM watt balance project. After a first measurement of the Planck constant in air at the 10 -5 level, an improvement of a…”
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Conference Proceeding -
14
Atom interferometry in a vertical optical lattice
Published in Fortschritte der Physik (01-11-2004)“…We have studied the interference of degenerate quantum gases in a vertical optical lattice. The coherence of the atoms leads to an interference pattern when…”
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15
Alignment procedure used in the BIPM watt balance
Published in CPEM 2010 (01-06-2010)“…We present an experimental method used for the BIPM watt balance to align with high accuracy the main vectors involved in the experiment. In particular, the…”
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Conference Proceeding -
16
The BIPM watt balance: Improvements and developments
Published in CPEM 2010 (01-06-2010)“…This paper summarizes the various improvements to and new developments for the BIPM watt balance which have been implemented over the past two years. The main…”
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Conference Proceeding -
17
Precise determination of h/mRb using Bloch oscillations and atomic interferometry: A mean to deduce the fine structure constant
Published in The European physical journal. ST, Special topics (2008)“…We use Bloch oscillations to transfer coherently many photon momenta to atoms. Then we can measure accurately the ratio h/m Rb and deduce the fine structure…”
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Journal Article Conference Proceeding -
18
Status of the BIPM Watt Balance
Published in IEEE transactions on instrumentation and measurement (01-06-2013)“…This paper presents the progress made to improve and develop the Bureau International des Poids et Mesures (BIPM) watt balance during the last two years. A…”
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19
Determination of the fine structure constant based on BLOCH oscillations of ultracold atoms in a vertical optical lattice
Published in Physical review letters (27-01-2006)“…We report an accurate measurement of the recoil velocity of 87Rb atoms based on Bloch oscillations in a vertical accelerated optical lattice. We transfer about…”
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20
Survey of planck constant measurements
Published in 2012 Conference on Precision electromagnetic Measurements (01-07-2012)“…The kilogram, unit of mass, is the last base unit of the International System of Units still defined in terms of a material artifact. A redefinition of the…”
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Conference Proceeding