Generating superposition of up-to three photons for continuous variable quantum information processing

Abstract

We develop an experimental scheme based on a continuous-wave (cw) laser for generating arbitrary superpositions of photon number states. In this experiment, we successfully generate superposition states of zero to three photons, namely advanced versions of superpositions of two and three coherent states. They are fully compatible with developed quantum teleportation and measurement-based quantum operations with cw lasers. Due to achieved high detection efficiency, we observe, without any loss correction, multiple areas of negativity of Wigner function, which confirm strongly nonclassical nature of the generated states.

5 pages, 2 figures

References in corpus (9)

• Quantum Computing
• Photonic quantum technologies
• Generation of a superposition of odd photon number states for quantum information networks
• Reconstruction of non-classical cavity field states with snapshots of their decoherence
• Quantum homodyne tomography of a two-photon Fock state
• High purity bright single photon source
• Demonstration of a quantum nondemolition sum gate
• Demonstration of deterministic and high fidelity squeezing of quantum information
• Quantum Teleportation of Optical Quantum Gates

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