Composite-Light-Pulse Technique for High-Precision Atom Interferometry

Berg, P.; Abend, Sven; Tackmann, Gunnar; Schubert, C.; Giese, Enno; Schleich, Wolfgang P.; Narducci, Frank A.; Ertmer, W.; Rasel, Ernst M.

doi:10.1103/physrevlett.114.063002

Cited by 170 publications

(157 citation statements)

References 31 publications

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“…Intensity and magnetic field gradients, distributions over Zeeman sub-states and uncorrected Doppler shifts all cause such systematic perturbations in atom interferometry. Simple composite pulse methods have already been applied to atom interferometry to increase the interferometer area and sensitivity [14,15].…”

Section: Composite Pulse Techniques For Fidelity Enhancementmentioning

confidence: 99%

Velocimetry, Cooling and Rotation Sensing by Cold-Atom Matterwave Interferometry

Carey

Elcock

Saywell

et al. 2017

Quantum Information and Measurement (QIM) 2017

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Interferometric measurement of an atom's velocity allows, by tailoring the impulse imparted by the matterwave-splitting laser pulses, a velocity-dependent force that cools an atomic sample. Differential measurement reveals the sample's acceleration and rotation.OCIS codes: (020.1335) Atom optics; (020.3320) Laser cooling; (120.5790) Sagnac effect; (120.7250) Velocimetry Interferometric velocimetryRaman matterwave interferometry [1] commonly uses pairs of laser beams, similar in frequency but opposite in wavevector, to couple atomic states of similar electronic configuration and energy but different linear momentum. The momentum difference gives the radiative interaction a velocity-dependence, which may be overcome if the interaction is limited to pulses short enough to be broad in bandwidth, but which persists between pulses in the phase drift between the atomic superposition and the laser oscillator. The small frequency difference between the coupled states means that there is negligible spontaneous emission, and that the beam pair can be produced with phase precision by radio-frequency modulation of a single master laser. With these ingredients, atom interferometry has been shown to be a precise means of inertial measurement [2][3][4].The evolution of the wavefunction of an atom, as it moves with respect to, but between the pulses of, an interacting optical field, may be viewed from two perspectives. From that of the optical apparatus, the coupled atomic states differ in kinetic energy, and the phase of their superposition therefore accrues because of the difference in classical action between their trajectories. Viewed from the inertial frame of the atom, the phase of the optical field varies as the apparatus moves and presents different points for the stationary atom to sample. The result is a relative phase φ between the atomic superposition and the optical field which, if the field is resonant for a stationary atom, depends after a time t upon the atom's velocity v:where k eff is the effective wavevector of the Raman field, equal to the wavevector difference between its components, and v R is the recoil velocity ℏk eff /m for atoms of mass m.Whether regarded as interference of the de Broglie matterwave, or of the optical wave transferred via an atomic resonator, the interference fringes of a two-pulse Ramsey interferometer show a sinusoidal dependence of the transferred population upon time, with a periodicity determined by the velocity component along k eff . Single velocity components may be found from the fringes' periodicity, and distributions from their Fourier transform. Interferometric coolingInterferometric measurement of the atomic velocity is accompanied by a radiative impulse, for atoms receive an impulse of ℏk eff when they are transferred between the two interferometer states. By tailoring the interferometer period and introducing an adjustable phase between the two interferometer pulses, it may be arranged that this impulse on average opposes the atom's velocity, and an atomic sampl...

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Section: Composite Pulse Techniques For Fidelity Enhancementmentioning

confidence: 99%

Velocimetry, Cooling and Rotation Sensing by Cold-Atom Matterwave Interferometry

Carey

Elcock

Saywell

et al. 2017

Quantum Information and Measurement (QIM) 2017

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“…La dérive observée pour τ > 1 000 s est due aux fluctuations à long terme du déplacement lumineux qui n'est pas parfaitement rejeté dans la séquence expérimentale alternant les mesures suivant les deux vecteurs d'onde ± k eff . La sensibilité à court terme que nous atteignons est vingt fois meilleure que celle obtenue par l'équipe de Stanford en 2011 [15] et est identique à celle obtenue récemment par l'équipe de Hanovre [16]. La stabilité à long terme que nous obtenons est d'un ordre de grandeur meilleure que celle obtenue dans [16].…”

Section: Réjection Des Vibrations Et Performances Du Gyromètreunclassified

Gyromètre à atomes froids de grande sensibilité

Geiger¹,

Dutta²,

Savoie³

et al. 2016

R. franç. métrol.

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RésuméNous présentons la nouvelle expérience de gyromètre à atomes froids du SYRTE mise en oeuvre depuis 2009. Cette expérience utilise une configuration en fontaine atomique et un interféromètre atomique à quatre impulsions lumineuses pouvant permettre d'atteindre une aire Sagnac d'au moins 11 cm 2 . Nous avons démontré une stabilité de 3 nrad·s −1 après 1 000 s de temps d'intégration, ce qui représente l'état de l'art pour un gyromètre à atomes froids. Nous décrivons ici les éléments essentiels de l'expérience et les principales perspectives d'amélioration prévues à court et moyen terme. MOTS CLÉS : ATOMES FROIDS, CAPTEUR INERTIEL, INTERFÉROMÉTRIE ATOMIQUE. Abstract

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“…Over the past decade, rapidly growing experimental facilities in quantum technologies have led to an increasing interest in quantum metrology and sensing [1,2]. Many important applications, such as gravitational waves detection interferometers [3], frequency standards and atomic clocks [4,5], magnetometers [6], quantum gyroscopes [7], thermometry of living cells [8], or high resolution imaging in biology [9] require to achieve ultimate sensitivity for some vital parameters, defined by quantum limitations of measurement accuracy. The measuring schemes, which should be highly phase-sensitive, propose an estimation of the phase shift containing all the information about the required parameter, see [10,11].…”

Section: Introductionmentioning

confidence: 99%

Nonlinear quantum metrology with moving matter-wave solitons

et al. 2019

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The estimation of some parameters with super-Heisenberg (SH) sensitivity, i.e. beyond Heisenberg limit, is one of the principal problems for current quantum metrology. We propose to use Bose-Einstein condensate quantum bright solitons for this purpose. We have shown that solitons, as quantum nonlinear structured field objects, allow SH phase estimation even with coherent probes in the framework of a nonlinear metrology approach. To achieve ultimate scaling in nonlinear phase estimation, which is 1/N 3 , we examine soliton phase shift occurring due to interaction of weakly coupled 1D solitons. We have shown that steady states of coupled solitons can be used for the formation of maximally path-entangled N00N-state providing minimal propagation error of solitons' relative distance, momentum, and atom-atom scattering length parameter.

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Composite-Light-Pulse Technique for High-Precision Atom Interferometry

Cited by 170 publications

References 31 publications

Velocimetry, Cooling and Rotation Sensing by Cold-Atom Matterwave Interferometry

Velocimetry, Cooling and Rotation Sensing by Cold-Atom Matterwave Interferometry

Gyromètre à atomes froids de grande sensibilité

Nonlinear quantum metrology with moving matter-wave solitons

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