Schrodinger-cat sate generation and generalized Ramsey interferometry

Sebastián Carrasco; Michael H. Goerz; Zeyang Li; Simone Colombo; Vladan Vuletic; Vladimir S. Malinovsky

doi:10.1117/12.2626157

9 March 2022 Schrodinger-cat sate generation and generalized Ramsey interferometry

Sebastián Carrasco, Michael H. Goerz, Zeyang Li, Simone Colombo, Vladan Vuletic, Vladimir S. Malinovsky

Proceedings Volume PC12016, Optical and Quantum Sensing and Precision Metrology II; PC120160T (2022) https://doi.org/10.1117/12.2626157
Event: SPIE OPTO, 2022, San Francisco, California, United States

Abstract

The Heisenberg limit of quantum measurement where the measurement precision scales as N-1 with the number of atoms N can be achieved by introducing quantum correlations between the atoms. In the present work, we show how to reach Heisenberg scaling by implementing a new Ramsey measurement scheme for cold-atom metrological devices. The proposed protocol consists of a sequence of one-axis twisting pulses and total collective spin rotations. It results in the creation of atomic Schrödinger-cat states, a superposition of two coherent spin states. Analyzing the Fisher information, we discuss the main features of the states and their interferometric precision.

Conference Presentation

Citation Download Citation

Sebastián Carrasco, Michael H. Goerz, Zeyang Li, Simone Colombo, Vladan Vuletic, and Vladimir S. Malinovsky "Schrodinger-cat sate generation and generalized Ramsey interferometry", Proc. SPIE PC12016, Optical and Quantum Sensing and Precision Metrology II, PC120160T (9 March 2022); https://doi.org/10.1117/12.2626157

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