Coherent population trapping in Raman-pulse atom interferometry
Raman pulse atom interferometry is an important modality for precision measurements of inertial forces and tests of fundamental physics. Typical Raman atom optics use two coherent laser fields applied at gigahertz-scale detunings from optical resonance, so that spontaneous emission produces a minor...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | en_US |
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American Physical Society (APS)
2012
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| Online Access: | http://hdl.handle.net/1721.1/69131 |
| _version_ | 1826198781936271360 |
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| author | Kinast, Joseph M. Radojevic, Antonije M. Timmons, Brian P. Stoner, Richard E. Butts, David L. Kotru, Krish |
| author2 | Massachusetts Institute of Technology. Department of Aeronautics and Astronautics |
| author_facet | Massachusetts Institute of Technology. Department of Aeronautics and Astronautics Kinast, Joseph M. Radojevic, Antonije M. Timmons, Brian P. Stoner, Richard E. Butts, David L. Kotru, Krish |
| author_sort | Kinast, Joseph M. |
| collection | MIT |
| description | Raman pulse atom interferometry is an important modality for precision measurements of inertial forces and tests of fundamental physics. Typical Raman atom optics use two coherent laser fields applied at gigahertz-scale detunings from optical resonance, so that spontaneous emission produces a minor or negligible source of decoherence. An additional consequence of spontaneous emission is coherent population trapping (CPT). We show that CPT produces coherences and population differences which induce systematic effects in Raman pulse atom interferometers. We do not believe that CPT has been previously identified as an error mechanism in Raman pulse atom interferometry. We present an experimental characterization of CPT coherences and population differences induced in laser-cooled cesium atoms by application of Raman pulses at detunings near 1 GHz, commensurate with detunings used in several precision measurement experiments. We are not aware of previous demonstrations of CPT-induced population difference. We argue that CPT effects could induce phase shifts of several milliradians in magnitude for typical experimental parameters and stipulate that these errors can be suppressed by propagation direction reversal in Raman interferometer-based precision measurements. |
| first_indexed | 2024-09-23T11:09:54Z |
| format | Article |
| id | mit-1721.1/69131 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T11:09:54Z |
| publishDate | 2012 |
| publisher | American Physical Society (APS) |
| record_format | dspace |
| spelling | mit-1721.1/691312022-09-27T17:34:03Z Coherent population trapping in Raman-pulse atom interferometry Kinast, Joseph M. Radojevic, Antonije M. Timmons, Brian P. Stoner, Richard E. Butts, David L. Kotru, Krish Massachusetts Institute of Technology. Department of Aeronautics and Astronautics Butts, David L. Butts, David L. Kotru, Krish Raman pulse atom interferometry is an important modality for precision measurements of inertial forces and tests of fundamental physics. Typical Raman atom optics use two coherent laser fields applied at gigahertz-scale detunings from optical resonance, so that spontaneous emission produces a minor or negligible source of decoherence. An additional consequence of spontaneous emission is coherent population trapping (CPT). We show that CPT produces coherences and population differences which induce systematic effects in Raman pulse atom interferometers. We do not believe that CPT has been previously identified as an error mechanism in Raman pulse atom interferometry. We present an experimental characterization of CPT coherences and population differences induced in laser-cooled cesium atoms by application of Raman pulses at detunings near 1 GHz, commensurate with detunings used in several precision measurement experiments. We are not aware of previous demonstrations of CPT-induced population difference. We argue that CPT effects could induce phase shifts of several milliradians in magnitude for typical experimental parameters and stipulate that these errors can be suppressed by propagation direction reversal in Raman interferometer-based precision measurements. Charles Stark Draper Laboratory (Office of Education) Charles Stark Draper Laboratory (IR&D program) 2012-02-16T18:36:45Z 2012-02-16T18:36:45Z 2011-10 2011-01 Article http://purl.org/eprint/type/JournalArticle 1050-2947 1094-1622 http://hdl.handle.net/1721.1/69131 Butts, David et al. “Coherent Population Trapping in Raman-pulse Atom Interferometry.” Physical Review A 84.4 (2011): n. pag. Web. 16 Feb. 2012. © 2011 American Physical Society en_US http://dx.doi.org/10.1103/PhysRevA.84.043613 Physical Review A Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Physical Society (APS) APS |
| spellingShingle | Kinast, Joseph M. Radojevic, Antonije M. Timmons, Brian P. Stoner, Richard E. Butts, David L. Kotru, Krish Coherent population trapping in Raman-pulse atom interferometry |
| title | Coherent population trapping in Raman-pulse atom interferometry |
| title_full | Coherent population trapping in Raman-pulse atom interferometry |
| title_fullStr | Coherent population trapping in Raman-pulse atom interferometry |
| title_full_unstemmed | Coherent population trapping in Raman-pulse atom interferometry |
| title_short | Coherent population trapping in Raman-pulse atom interferometry |
| title_sort | coherent population trapping in raman pulse atom interferometry |
| url | http://hdl.handle.net/1721.1/69131 |
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