Two-mode squeezed states as Schrodinger cat-like states

Oudot, E. and Sekatski, P. and Frowis, F. and Gisin, N. and Sangouard, N.. (2015) Two-mode squeezed states as Schrodinger cat-like states. Journal of the Optical Society of America B, 32 (10). pp. 2190-2197.

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Official URL: http://edoc.unibas.ch/40823/

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In recent years, there has been an increased interest in the generation of superpositions of coherent states with opposite phases, the so-called photonic Schr`odinger cat states. These experiments are challenging, and, so far, cats involving only small photon numbers have been implemented. Here, we propose to consider two-mode squeezed states as examples of Schr`odinger cat-like states. For this, we apply criteria that aim to identify macroscopic superpositions in a more general sense. We extend some of these criteria to the two-mode continuous variable regime. Furthermore, we compare the size of states obtained in several experiments and discuss experimental challenges for further improvements. Our results not only promote two-mode squeezed states for exploring quantum effects at the macroscopic level but also provide direct measures to evaluate their usefulness for quantum metrology.
Faculties and Departments:05 Faculty of Science > Departement Physik > Former Organization Units Physics > Quantum Physics (Sangouard)
UniBasel Contributors:Sangouard, Nicolas and Oudot, Enky
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:The Optical Society
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:30 Jun 2016 11:01
Deposited On:11 May 2016 14:07

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