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Engineering of heralded narrowband color-entangled states

A. Zavatta, M. Artoni, and G. La Rocca
Phys. Rev. A 99, 031802(R) – Published 19 March 2019

Abstract

The efficient generation of entanglement is an essential requirement for quantum communications; however, long distances can only be achieved by utilizing entangled states that can be efficiently mapped into matter. Hence, sources generating states with bandwidths naturally compatible with the linewidths of atomic transitions are crucial. We harness the indistinguishability between two spontaneous four-wave mixing processes to achieve the heralded generation of single-photon frequency-bin entangled states. State manipulation admits entanglement and generation probability optimizations yet with negligible absorption. The scheme could also be adapted to photonic and solid interfaces.

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  • Received 27 April 2018

DOI:https://doi.org/10.1103/PhysRevA.99.031802

©2019 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & OpticalQuantum Information, Science & Technology

Authors & Affiliations

A. Zavatta*

  • Istituto Nazionale di Ottica (CNR-INO) Largo E. Fermi, 6, 50125 Firenze, Italy; European Laboratory for Nonlinear Spectroscopy, Via N. Carrara 1, 50019 Sesto Fiorentino, Italy; and Dipartimento di Fisica ed Astronomia, Università degli Studi di Firenze, 50019 Sesto Fiorentino, Italy

M. Artoni

  • European Laboratory for Nonlinear Spectroscopy, Via N. Carrara 1, 50019 Sesto Fiorentino, Italy; Istituto Nazionale di Ottica (CNR-INO) Via Branze 45, 25123 Brescia, Italy; and Department of Information Engineering, Brescia University, 25123 Brescia, Italy

G. La Rocca

  • Scuola Normale Superiore and CNISM, 56126 Pisa, Italy

  • *alessandro.zavatta@ino.it

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Issue

Vol. 99, Iss. 3 — March 2019

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