Demonstration of deterministic and high fidelity squeezing of quantum information

Details Demonstration of deterministic and high fidelity squeezing of quantum information Demonstration of deterministic and high fidelity squeezing of quantum information

2007-02-06

arxiv.org/abs/quant-ph/0702049v2

Phys. Rev. A 76, 060301(R) (2007)

Physics

Quantum Physics

5 pages, 4 figures

Scientific paper

10.1103/PhysRevA.76.060301

By employing at recent proposal (R. Filip, P. Marek and U.L. Andersen, Phys. Rev. A {\bf 71}, 042308 (2005) \cite{Filip05.pra}), we experimentally demonstrate a universal, deterministic and high-fidelity squeezing transformation of an optical field. It relies only on linear optics, homodyne detection, feedforward and an ancillary squeezed vacuum state, thus direct interaction between a strong pump and the quantum state is circumvented. We demonstrate three different squeezing levels for a coherent state input. This scheme is highly suitable for the fault-tolerant squeezing transformation in a continuous variable quantum computer.

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