title: Correlations of the Time Dependent Signal and the State of a Continuously Monitored Quantum System.
abstract: In quantum physics, measurements give random results and yield a corresponding random backaction 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.
authors.affiliation: Department of Physics, Washington University, St. Louis, Missouri 63130, USA.
authors.forename: N
authors.initials: N
authors.lastname: Foroozani
authors.affiliation: Department of Physics, Washington University, St. Louis, Missouri 63130, USA.
authors.forename: M
authors.initials: M
authors.lastname: Naghiloo
authors.affiliation: Department of Physics, Washington University, St. Louis, Missouri 63130, USA.
authors.forename: D
authors.initials: D
authors.lastname: Tan
authors.affiliation: Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK-8000 Aarhus C, Denmark.
authors.forename: K
authors.initials: K
authors.lastname: Mølmer
authors.affiliation: Department of Physics, Washington University, St. Louis, Missouri 63130, USA.|Institute for Materials Science and Engineering, St. Louis, Missouri 63130, USA.
authors.forename: K W
authors.initials: KW
authors.lastname: Murch