Scientific article
Open access

Storage of hyperentanglement in a solid-state quantum memory

Published inOptica, vol. 2, no. 4, 279
Publication date2015

Two photons can simultaneously share entanglement between several degrees of freedom such as polarization, energy-time, spatial mode and orbital angular momentum. This resource is known as hyperentanglement, and it has been shown to be an important tool for optical quantum information processing. Here we demonstrate the quantum storage and retrieval of photonic hyperentanglement in a solid-state quantum memory. A pair of photons entangled in polarization and energy-time is generated such that one photon is stored in the quantum memory, while the other photon has a telecommunication wavelength suitable for transmission in optical fibre. We measured violations of a Clauser-Horne-Shimony-Holt (CHSH) Bell inequality for each degree of freedom, independently of the other one, which proves the successful storage and retrieval of the two bits of entanglement shared by the photons. Our scheme is compatible with long-distance quantum communication in optical fibre, and is in particular suitable for linear-optical entanglement purification for quantum repeaters.

Citation (ISO format)
TIRANOV, Alexey et al. Storage of hyperentanglement in a solid-state quantum memory. In: Optica, 2015, vol. 2, n° 4, p. 279. doi: 10.1364/OPTICA.2.000279
Main files (1)
Article (Published version)
ISSN of the journal2334-2536

Technical informations

Creation11/28/2016 2:15:00 PM
First validation11/28/2016 2:15:00 PM
Update time03/15/2023 1:04:51 AM
Status update03/15/2023 1:04:50 AM
Last indexation08/30/2023 12:36:22 PM
All rights reserved by Archive ouverte UNIGE and the University of GenevaunigeBlack