Work

Four-photon quantum interferometry at a telecom wavelength

Year: 2012

Type: article

Abstract: We report on an experimental demonstration of four-photon quantum interference using telecom-wavelength photons. The realization of multiphoton quantum interference is essential to linear optics quantum information processing and measurement-based quantum computing. We have developed a source that efficiently emits photon pairs in a pure spectrotemporal mode at a telecom-wavelength region, and have demonstrated quantum interference exhibiting reduced fringe intervals that correspond to a reduced de Broglie wavelength of up to the four-photon NOON state. Our result should open a path to practical quantum information processing using telecom-wavelength photons.

Source: Physical Review A

DOI: 10.1103/physreva.86.010302

Authors: Masahiro Yabuno, Ryosuke Shimizu, Yasuyoshi Mitsumori, Hideo Kosaka, Keiichi Edamatsu

Institutions: Tohoku University, University of Electro-Communications

Language: English

Topic: Quantum Information and Cryptography

Subfield: Artificial Intelligence

Field: Computer Science

Domain: Physical Sciences

Open Access status: green

Funder: Japan Society for the Promotion of Science

Awards: Development of quantum operation devices using single-photon-level nonlinear interaction between photons and solids, Photoinduced longitudinal electric field effect of the excitons in semiconductor quantum dots, Control of a wavepacket for temporally entangled photons