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Long Phase Coherence Time and Number Squeezing of Two Bose-Einstein Condensates on an Atom Chip
Open accessAbstract
We measure the relative phase of two Bose-Einstein condensates confined in a radio frequency induced double-well potential on an atom chip. We observe phase coherence between the separated condensates for times up to approximately 200 ms after splitting, a factor of 10 longer than the phase diffusion time expected for a coherent state for our experimental conditions. The enhanced coherence time is attributed to number squeezing of the initial state by a factor of 10. In addition, we demonstrate a rotationally sensitive (Sagnac) geometry for a guided atom interferometer by propagating the split condensates.
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Citations
Cites
Quantum phase transition from a superfluid to a Mott insulator in a gas of ultracold atoms
Greiner, M., Mandel, O., Esslinger, T., Hänsch, T. W., & Bloch, I. (2002) · Nature · doi:10.1038/415039a · Cited by 5,935
Cited by
Many-body physics with ultracold gases
Bloch, I., Dalibard, J., & Zwerger, W. (2008) · Reviews of Modern Physics · doi:10.1103/revmodphys.80.885 · Cited by 8,114
Integrated Mach–Zehnder interferometer for Bose–Einstein condensates
Berrada, T., van Frank, S., Bücker, R., Schumm, T., Schaff, J.-F., & Schmiedmayer, J. (2013) · Nature Communications · doi:10.1038/ncomms3077 · Cited by 276
Metadata
- Authors
- Jo, G.-B., Shin, Y., Will, S., Pasquini, T. A., Saba, M., Ketterle, W., Pritchard, D. E., Vengalattore, M., & Prentiss, M.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2007-01-19
- Volume
- 98
- Issue
- 3
- Pages
- 030407-030407
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2079689277
- Cited by
- 354
- References
- 1
- FWCI
- 30.56
- Type
- journal article
- Language
- en
- Open access
- green
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- Jo, G.-B., Shin, Y., Will, S., Pasquini, T. A., Saba, M., Ketterle, W., Pritchard, D. E., Vengalattore, M., & Prentiss, M. (2007). Long Phase Coherence Time and Number Squeezing of Two Bose-Einstein Condensates on an Atom Chip. Physical Review Letters. https://doi.org/10.1103/physrevlett.98.030407
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