title: Quantum model of spin noise.
abstract: Any ensemble of quantum particles exhibits statistical fluctuations known as spin noise. Here, we provide a description of spin noise in the language of open quantum systems. The description unifies the signatures of spin noise under both strong and weak measurements. Further, the model accounts for arbitrary spin dynamics from an arbitrary initial state. In all cases we can find both the spin noise and its time correlation function.
authors: Institute for Quantum Computing, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada; Department of Physics and Astronomy, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada. Electronic address: rannabes@uwaterloo.ca.
authors: R
authors: R
authors: Annabestani
authors: Institute for Quantum Computing, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada; Department of Physics and Astronomy, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada; Department of Chemistry, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada; Perimeter Institute for Theoretical Physics, Waterloo, Ontario N2L 2Y5, Canada; Canadian Institute for Advanced Research, Toronto, Ontario M5G 1Z8, Canada. Electronic address: dcory@iqc.ca.
authors: D G
authors: DG
authors: Cory
authors: Institute for Quantum Computing, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada; Canadian Institute for Advanced Research, Toronto, Ontario M5G 1Z8, Canada; Department of Applied Mathematics, University of Waterloo, 200 University Avenue West, N2L 3G1 Waterloo, Ontario, Canada. Electronic address: jemerson@math.uwaterloo.ca.
authors: J
authors: J
authors: Emerson
keywords: Open quantum systems; Spin noise