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      Data for paper: Dispersive detection of radio-frequency dressed states, arxiv:1801.07016

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      Publication date
      2018-04-09
      Creators
      Fernholz, Thomas
      Metadata
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      Description
      We introduce a method to dispersively detect alkali atoms in radio-frequency dressed states. In particular, we use dressed detection to measure populations and population differences of atoms prepared in their clock states. Linear birefringence of the atomic medium enables atom number detection via polarisation homodyning, a form of common path interferometry. In order to achieve low technical noise levels, we perform optical sideband detection after adiabatic transformation of bare states into dressed states. The balanced homodyne signal then oscillates independently of field fluctuations at twice the dressing frequency, thus allowing for robust, phase-locked detection that circumvents low-frequency noise. Using probe pulses of two optical frequencies, we can detect both clock states simultaneously and obtain population difference as well as the total atom number. The scheme also allows for difference measurements by direct subtraction of the homodyne signals at the balanced detector, which should technically enable quantum noise limited measurements with prospects for the preparation of spin squeezed states. The method extends to other Zeeman sublevels and can be employed in a range of atomic clock schemes, atom interferometers, and other experiments using dressed atoms.
      External URI
      • https://rdmc.nottingham.ac.uk/handle/internal/354
      DOI
      • http://doi.org/10.17639/nott.350
      Links
      • https://arxiv.org/abs/1801.07016
      • http://doi.org/10.17639/nott.350
      Subjects
      • Interferometry
      • Detectors
      • Atoms
      • Quantum optics
      • dispersive detection, radio-frequency dressing
      • Physical sciences::Physics::Nuclear & particle physics
      • Q Science::QC Physics::QC170 Atomic physics. Constitution and properties of matter
      Divisions
      • University of Nottingham, UK Campus::Faculty of Science::School of Physics and Astronomy
      Research institutes and centres
      • University of Nottingham, UK Campus
      Deposit date
      2018-04-09
      Data type
      Various measurement data
      Contributors
      • Jammi, Sindhu
      • Pyragius, Tadas
      • Bason, Mark
      • Marin Florez, Hans
      Funders
      • Engineering & Physical Sciences Research Council
      • European Comission
      Grant number
      • FP7-PEOPLE-2012-ITN-317485
      • FP7-ICT-601180
      • EP/M013294/1
      • EP/J015857/1
      Data collection method
      Data recorded from ultra-cold atom apparatus
      Resource language
      • en
      Publisher
      The University of Nottingham

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