Measuring finite-range phase coherence in an optical lattice using Talbot interferometry

Santra B, Baals C, Labouvie R, Bhattacherjee AB, Pelster A, Ott H (2017)

Publication Type: Journal article

Publication year: 2017

Journal

Nature Communications Nature Publishing Group: Nature Communications

Book Volume: 8

Article Number: 15601

DOI: 10.1038/ncomms15601

Abstract

One of the important goals of present research is to control and manipulate coherence in a broad variety of systems, such as semiconductor spintronics, biological photosynthetic systems, superconducting qubits and complex atomic networks. Over the past decades, interferometry of atoms and molecules has proven to be a powerful tool to explore coherence. Here we demonstrate a near-field interferometer based on the Talbot effect, which allows us to measure finite-range phase coherence of ultracold atoms in an optical lattice. We apply this interferometer to study the build-up of phase coherence after a quantum quench of a Bose-Einstein condensate residing in a one-dimensional optical lattice. Our technique of measuring finite-range phase coherence is generic, easy to adopt and can be applied in practically all lattice experiments without further modifications.

Involved external institutions

Technische Universität Kaiserslautern DE Germany (DE) Jawaharlal Nehru University (JNU) IN India (IN)

How to cite

APA:

Santra, B., Baals, C., Labouvie, R., Bhattacherjee, A.B., Pelster, A., & Ott, H. (2017). Measuring finite-range phase coherence in an optical lattice using Talbot interferometry. Nature Communications, 8. https://dx.doi.org/10.1038/ncomms15601

MLA:

Santra, Bodhaditya, et al. "Measuring finite-range phase coherence in an optical lattice using Talbot interferometry." Nature Communications 8 (2017).

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