Journal
EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS
Volume 226, Issue 12, Pages 2705-2713Publisher
SPRINGER HEIDELBERG
DOI: 10.1140/epjst/e2016-60385-8
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Funding
- ERC through the Consolidator Grant CORPHO [616233]
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We investigate two different kinds of quantum trajectories for a nonlinear photon resonator subject to two-photon pumping, a configuration recently studied for the generation of photonic Schrodinger cat states. In the absence of feedback control and in the strong-driving limit, the steady-state density matrix is a statistical mixture of two states with equal weight. While along a single photon-counting trajectory the systems intermittently switches between an odd and an even cat state, we show that upon homodyne detection the situation is different. Indeed, homodyne quantum trajectories reveal switches between coherent states of opposite phase.
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