Momentum Entanglement for Atom Interferometry

• URL: http://arxiv.org/abs/2010.15796v2
• Date: Mon, 30 Nov 2020 10:26:30 GMT
• Title: Momentum Entanglement for Atom Interferometry
• Authors: F. Anders, A. Idel, P. Feldmann, D. Bondarenko, S. Loriani, K. Lange, J. Peise, M. Gersemann, B. Meyer, S. Abend, N. Gaaloul, C. Schubert, D. Schlippert, L. Santos, E. Rasel, C. Klempt
• Abstract summary: Entanglement-enhanced atom interferometers open up unprecedented sensitivities for quantum gradiometers or gravitational wave detectors. We demonstrate a source of entangled atoms that is compatible with state-of-the-art interferometers.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Compared to light interferometers, the flux in cold-atom interferometers is low and the associated shot noise large. Sensitivities beyond these limitations require the preparation of entangled atoms in different momentum modes. Here, we demonstrate a source of entangled atoms that is compatible with state-of-the-art interferometers. Entanglement is transferred from the spin degree of freedom of a Bose-Einstein condensate to well-separated momentum modes, witnessed by a squeezing parameter of -3.1(8) dB. Entanglement-enhanced atom interferometers open up unprecedented sensitivities for quantum gradiometers or gravitational wave detectors.

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