Volume 106, Number 5, June 2014
|Number of page(s)||6|
|Section||Electromagnetism, Optics, Acoustics, Heat Transfer, Classical Mechanics, and Fluid Dynamics|
|Published online||02 June 2014|
A quantum optical valve in a nonlinear-linear resonators junction
1 Departamento de Física, Universidade Federal de Minas Gerais - Belo Horizonte, MG, Brazil
2 Dipartimento di Fisica, Università di Pavia - via Bassi 6, I-27100 Pavia, Italy
3 Institut Néel-CNRS - 25 Rue des Martyrs, 38042 Grenoble Cedex 9, Grenoble, France
4 Universidade Federal de Mato Grosso - Cuiabá, MT, Brazil
5 Institut fur Quanteninformationsverarbeitung - A.-Einstein-Allee 11, D-89069 Ulm, Germany
Received: 25 February 2014
Accepted: 12 May 2014
Electronic diodes, which enable the rectification of an electrical energy flux, have played a crucial role in the development of current microelectronics after the invention of semiconductor p-n junctions. Analogously, signal rectification at specific target wavelengths has recently become a key goal in optical communication and signal processing. Here we propose a genuinely quantum device with the essential rectifying features being demonstrated in a general model of a nonlinear-linear junction of coupled resonators. It is shown that such a surprisingly simple structure is a versatile valve and may be alternatively tuned to behave as: a photonic diode, a single- or two-photon rectified source turning a classical input into a quantum output depending on the input frequency, or a quantum photonic splitter. Given the relevance of non-reciprocal operations in integrated circuits, the nonlinear-linear junction realizes a crucial building component in prospective quantum photonic applications.
PACS: 42.50.-p – Quantum optics / 05.60.Gg – Quantum transport
© EPLA, 2014
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