Paper
26 August 2009 High-efficiency quantum state engineering
Author Affiliations +
Abstract
Efficiently creating optical quantum states, both simple (e.g., pure single-photon states) and complex (e.g., polarization-entangled but spectrally unentangled photon pairs), remains an experimental challenge. We report on a novel method that allows for efficiently preparing certain classes of states: by weakly driving repeated downconversion in a cavity, we can pseudo-deterministically add photons to a state, preparing Fock states of definite photon number. We discuss expected performance and experimental limitations, including the difficulty of creating pure photons at a high rate. Additionally, we report on our progress in engineering high-rate spatio-spectrally unentangled downconversion, a key technology for optical quantum information processing, and propose a novel 4-photon experimental scheme to test the intrinsic indistinguishability of the photons from this source.
© (2009) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Kevin T. McCusker, Radhika Rangarajan, and Paul G. Kwiat "High-efficiency quantum state engineering", Proc. SPIE 7465, Quantum Communications and Quantum Imaging VII, 74650F (26 August 2009); https://doi.org/10.1117/12.826998
Advertisement
Advertisement
RIGHTS & PERMISSIONS
Get copyright permission  Get copyright permission on Copyright Marketplace
KEYWORDS
Quantum state engineering

Quantum optics

Current controlled current source

Photon polarization

Quantum communications

Quantum efficiency

Quantum information processing

Back to Top