Journal
PHYSICAL REVIEW A
Volume 100, Issue 1, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.100.013831
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Funding
- European Union's Horizon 2020 research and innovation programme [732894]
- SFI-DfE Investigator programme [15/IA/2864]
- EU Horizon2020 Collaborative Project TEQ [766900]
- EPSRC [EP/P00282X/1]
- EPSRC [EP/P00282X/1] Funding Source: UKRI
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We study the dissipative preparation of pure non-Gaussian states of a target mode which is coupled both linearly and quadratically to an auxiliary damped mode. We show that any pure state achieved independently of the initial condition is either (i) a cubic phase state, namely, a state given by the action of a non-Gaussian (cubic) unitary on a squeezed vacuum or (ii) a (squeezed and displaced) finite superposition of Fock states. Which of the two states is realized depends on whether the transformation induced by the engineered reservoir on the target mode is canonical (i) or not (ii). We discuss how to prepare these states in an optomechanical cavity driven with multiple control lasers, by tuning the relative strengths and phases of the drives. Relevant examples in (ii) include the stabilization of mechanical Schrodinger-cat-like states or Fock-type states of any order. Our analysis is entirely analytical: it extends reservoir engineering to the non-Gaussian regime and enables the preparation of novel mechanical states with negative Wigner function.
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