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Integrated Mach–Zehnder interferometer for Bose–Einstein condensates
Open accessAbstract
Particle-wave duality enables the construction of interferometers for matter waves, which complement optical interferometers in precision measurement devices. This requires the development of atom-optics analogues to beam splitters, phase shifters and recombiners. Integrating these elements into a single device has been a long-standing goal. Here we demonstrate a full Mach–Zehnder sequence with trapped Bose–Einstein condensates confined on an atom chip. Particle interactions in our Bose–Einstein condensate matter waves lead to a nonlinearity, absent in photon optics. We exploit it to generate a non-classical state having reduced number fluctuations inside the interferometer. Making use of spatially separated wave packets, a controlled phase shift is applied and read out by a non-adiabatic matter-wave recombiner. We demonstrate coherence times a factor of three beyond what is expected for coherent states, highlighting the potential of entanglement as a resource for metrology. Our results pave the way for integrated quantum-enhanced matter-wave sensors. Atom interferometers exploit wave-particle duality and can be used as sensitive measurement devices. Berrada et al.present a Mach–Zehnder interferometer for Bose–Einstein condensates trapped on an atom chip and demonstrate enhanced performance using non-classical states.
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Metadata
- Authors
- Berrada, T., van Frank, S., Bücker, R., Schumm, T., Schaff, J.-F., & Schmiedmayer, J.
- Venue
- Nature Communications
- Published
- 2013-06-27
- Volume
- 4
- Issue
- 1
- Pages
- 2077-2077
- ISSN
- 2041-1723 (ISSN-L)
- OpenAlex
- W1978938773
- Cited by
- 276
- References
- 55
- FWCI
- 14.22
- Type
- journal article
- Language
- en
- Open access
- hybrid
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