Rostock 2019 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 5: Precision Measurements and Metrology I
Q 5.3: Vortrag
Montag, 11. März 2019, 11:00–11:15, S SR 111 Maschb.
Prospects of large momentum transfer with twin lattices for phase sensitive atom interferometry — •Jan-Niclas Siemß1,2, Sven Abend2, Ernst M. Rasel2, Klemens Hammerer1, and Naceur Gaaloul2 — 1Institut für Theoretische Physik, LU Hannover — 2Institut für Quantenoptik, LU Hannover
Large momentum transfer (LMT) schemes for atom interferometry with Bose-Einstein condensates combining Bragg pulses and Bloch oscillations allow for state-of-the-art momentum separation in an atom interferometer with up to 408 photon recoils (ℏ k). As their sensitivity is increasing with the spatial separation of the two interferometer arms, LMT techniques are likely to become integral parts in new-generation, high-performance sensors.
In our work, we investigate the fundamental limits of momentum separation in a phase sensitive atom interferometer using twin Bloch lattices. We evaluate the sensor’s scalability up to thousand ℏ k separation with respect to systematic effects as well as effects reducing the interferometric contrast considering noise sources such as laser intensity and phase noise or non-adiabatic losses during the lattice acceleration.
To analyze interferometric sequences involving symmetric optical lattices, we perform semi-analytical studies when possible and developed an efficient numerical time-dependent solver capable of dealing with a wide variety of realistic atom interferometry beam splitting processes.
The presented work is supported by the CRC 1227 DQmat within the project A05.