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Frontiers in Optics

Demonstration of an Optomechanically Tunable Optical Buffer in Diamond Microcavities

Matthew Mitchell, David P. Lake, Paul E. Barclay

Published Jan 1, 2018• 0 citations
Publisher

Abstract

Enhancement of optomechanical pulse storage time is demonstrated, for the first time, in a multimode single-crystal diamond microdisk cavity. All-optical control of the mechanical damping rate allows > 5 × enhancement of the pulse storage time.
DOI
10.1364/fio.2018.fw7a.6

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One of the major advances needed to realize all-optical information processing of light is the ability to delay or coherently store and retrieve optical information in a rapidly tunable manner. In the classical domain, this optical buffering is expected to be a key ingredient of managing the flow of information over complex optical networks. Such a system also has profound implications for quantum information processing, serving as a long-term memory that can store the full quantum information contained in an optical pulse. Here, we suggest a novel approach to light storage involving an optical waveguide coupled to an optomechanical crystal array, where light in the waveguide can be dynamically and coherently transferred into long-lived mechanical vibrations of the array. Under realistic conditions, this system is capable of achieving large bandwidths and storage/delay times in a compact, on-chip platform.
The ability to coherently store and retrieve optical information in a rapidly tunable manner is an important ingredient for all‐optical information processing. In the classical domain, this optical buffering is necessary to manage information flow in complex networks. In quantum information processing, such a system can also serve as a long‐term memory capable of storing the full quantum information contained in an optical pulse. Here we suggest a novel approach to light storage involving an optical waveguide coupled to an optomechanical crystal array, where light in the waveguide can be dynamically and reversibly mapped into long‐lived mechanical vibrations in the array. This technique enables large bandwidths and long storage and delay times in a compact, on‐chip platform.