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arXiv · 1508.01185

Correlations of the time dependent signal and the state of a continuously monitored quantum system

N. Foroozani·M. Naghiloo·D. Tan·K. Mølmer·K. W. Murch
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Abstract

In quantum physics, measurements give random results and yield a corresponding random back action on the state of the system subject to measurement. If a quantum system is probed continuously over time, its state evolves along a stochastic quantum trajectory. To investigate the characteristic properties of such dynamics, we perform weak continuous measurements on a superconducting qubit that is driven to undergo Rabi oscillations. From the data we observe a number of striking temporal correlations within the time dependent signals and the quantum trajectories of the qubit, and we discuss their explanation in terms of quantum measurement and photodetection theory.

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N. Foroozani, M. Naghiloo, D. Tan, K. Mølmer, K. W. Murch. 2015-08-05. Correlations of the time dependent signal and the state of a continuously monitored quantum system. https://doi.org/10.1103/physrevlett.116.110401

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