Dynamic Purcell-enhanced emission from erbium ions coupled to a microcavity (Conference Presentation)

Chetan Deshmukh; Bernardo Casabone; Hugues de Riedmatten; Diana Serrano; Shuping Liu; Alban Ferrier; Philippe Goldner; David Hunger

doi:10.1117/12.2556282

3 April 2020 Dynamic Purcell-enhanced emission from erbium ions coupled to a microcavity (Conference Presentation)

Chetan Deshmukh, Bernardo Casabone, Hugues de Riedmatten, Diana Serrano, Shuping Liu, Alban Ferrier, Philippe Goldner, David Hunger

Author Affiliations +

Proceedings Volume 11347, Quantum Technologies 2020; 113470E (2020) https://doi.org/10.1117/12.2556282
Event: SPIE Photonics Europe, 2020, Online Only

Abstract

Single quantum emitters coupled to optical cavities in the Purcell regime can be used as high-efficiency spin-photon interfaces that are essential for building a quantum network. Furthermore, the dynamical control of the spontaneous emission rate of quantum emitters can have important implications in quantum technologies, e.g. for shaping the emitted photons waveform, or for driving coherently the optical transition while preventing photon emission. Here we demonstrate the dynamical Purcell-enhanced emission of a mesoscopic ensemble of erbium ions doped into nanocrystals coupled to a fully-tunable high-finesse fiber-based optical microcavity. Erbium has excellent optical and spin coherence properties at cryogenic temperatures and, in addition, has a transition in the telecom band that can facilitate integration into existing commercial telecom fibers. We show that we can tune the cavity on and out of resonance at a rate of above 8 KHz, which is two orders of magnitude faster that the natural lifetime of the erbium ions (55 Hz), and a factor of five faster than the Purcell enhanced emission (1.8 KHz). This allows us to shape in real time the Purcell enhanced emission of the ions and to achieve full control over the emitted photon’s waveforms. With moderate improvements in our detection efficiency and cavity finesse, this capability will allow for the generation of single telecom photons with controllable wave-shape from single erbium ions and for the realization of quantum processing between rare-earth ion qubits using dipolar interactions.

Conference Presentation

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Chetan Deshmukh, Bernardo Casabone, Hugues de Riedmatten, Diana Serrano, Shuping Liu, Alban Ferrier, Philippe Goldner, and David Hunger "Dynamic Purcell-enhanced emission from erbium ions coupled to a microcavity (Conference Presentation)", Proc. SPIE 11347, Quantum Technologies 2020, 113470E (3 April 2020); https://doi.org/10.1117/12.2556282

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KEYWORDS

Ions

Erbium

Photons

Quantum efficiency

Integrated optics

Interfaces

Nanocrystals

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