Pushing Purcell enhancement beyond its limits
Open Access
- 1 June 2020
- journal article
- research article
- Published by IOP Publishing in New Journal of Physics
- Vol. 22 (6), 063013
- https://doi.org/10.1088/1367-2630/ab8ab0
Abstract
Purcell-enhanced photon emission into a cavity is at the heart of many schemes for interfacing quantum states of light and matter. We show that the intra-cavity coupling of orthogonal polarisation modes in a birefringent cavity allows for the emitter and photon to be decoupled prior to emission from the cavity mode, enabling photon extraction efficiencies that exceed the, previously considered fundamental, limits of Purcell enhancement. Tailored cavity birefringence is seen to mitigate the tradeoff between stronger emitter-cavity coupling and efficient photon extraction, providing significant advantages over single-mode cavities. We then generalise this approach to show that engineered coupling between states of the emitter can equivalently 'hide' the emitter from the photon, ultimately allowing the extraction efficiency to approach its fundamental upper limit. The principles proposed in this work can be applied in multiple ways to any emitter-cavity system, paving the way to surpassing the traditional limitations with technologies that exist today.Keywords
Funding Information
- Engineering and Physical Sciences Research Council (NQIT hub EP/M013243/1)
- H2020 Marie Skłodowska-Curie Actions (LIMQUET)
This publication has 49 references indexed in Scilit:
- Fast quantum logic gates with trapped-ion qubitsNature, 2018
- A programmable two-qubit quantum processor in siliconNature, 2018
- A quantum-dot spin qubit with coherence limited by charge noise and fidelity higher than 99.9%Nature Nanotechnology, 2017
- Building logical qubits in a superconducting quantum computing systemnpj Quantum Information, 2017
- Quantum computing with atomic qubits and Rydberg interactions: progress and challengesJournal of Physics B: Atomic, Molecular and Optical Physics, 2016
- Cavity-based quantum networks with single atoms and optical photonsReviews of Modern Physics, 2015
- An addressable quantum dot qubit with fault-tolerant control-fidelityNature Nanotechnology, 2014
- Reversible State Transfer between Light and a Single Trapped AtomPhysical Review Letters, 2007
- Strong coupling of a single photon to a superconducting qubit using circuit quantum electrodynamicsNature, 2004
- Quantum Computations with Cold Trapped IonsPhysical Review Letters, 1995