Phys. Rev. Lett. 103, 203601 (2009) [4 pages]Non-Gaussian State Generation from Linear Elements via FeedbackReceived 1 April 2009; published 11 November 2009 We present a feedback scheme to produce quantum non-Gaussian states from linear optical elements. Instead of traditional additive control methods, we introduce a mutiplicative feedback control and apply it to the deterministic generation of quantum superposition states. The protocol of feedback control is based on quantum nondemolition measurement of a quadrature, multifeedback structure, and Lyapunov stability for feedback design. © 2009 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.103.203601
DOI:
10.1103/PhysRevLett.103.203601
PACS:
42.50.Dv, 02.30.Yy, 03.65.Ud, 42.50.Ex
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