Related papers: The NV centre coupled to an ultra-small mode volume cavity: a high efficiency source of indistinguishable photons at 200 K

The NV centre coupled to an ultra-small mode volume cavity: a high efficiency source of indistinguishable photons at 200 K

URL: http://arxiv.org/abs/2005.13478v2
Date: Tue, 9 Mar 2021 10:19:09 GMT
Title: The NV centre coupled to an ultra-small mode volume cavity: a high efficiency source of indistinguishable photons at 200 K
Authors: Joe A. Smith, Chloe Clear, Krishna C. Balram, Dara P. S. McCutcheon, John G. Rarity
Abstract summary: atom-like systems burdened by phonon sidebands and broadening due to surface charges. We design a silicon nitride cavity that allows 99 % efficient extraction of photons at 200 K. Our work points towards scalable fabrication of non-cryogenic atom-like efficient sources of indistinguishable photons.
Score: 0.15749416770494706
License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Abstract: Solid state atom-like systems have great promise for linear optic quantum computing and quantum communication but are burdened by phonon sidebands and broadening due to surface charges. Nevertheless, coupling to a small mode volume cavity would allow high rates of extraction from even highly dephased emitters. We consider the nitrogen vacancy centre in diamond, a system understood to have a poor quantum optics interface with highly distinguishable photons, and design a silicon nitride cavity that allows 99 % efficient extraction of photons at 200 K with an indistinguishability of > 50%, improvable by external filtering. We analyse our design using FDTD simulations, and treat optical emission using a cavity QED master equation valid at and beyond strong coupling and which includes both ZPL broadening and sideband emission. The simulated design is compact (< 10 um), and owing to its planar geometry, can be fabricated using standard silicon processes. Our work therefore points towards scalable fabrication of non-cryogenic atom-like efficient sources of indistinguishable photons.

Related papers

Scalable construction of hybrid quantum photonic cavities [0.0]
We introduce a concept that generates a finely tunable PhC cavity at a select wavelength between two heterogeneous optical materials. The cavity is formed by stamping a hard-to-process material with simple waveguide geometries on top of an easy-to-process material. We simulate our concept for the particularly challenging design problem of multiplexed quantum repeaters based on arrays of cavity-coupled diamond color centers.
arXiv Detail & Related papers (2024-10-04T18:36:39Z)
Site-Controlled Purcell-Induced Bright Single Photon Emitters in Hexagonal Boron Nitride [62.170141783047974]
Single photon emitters hosted in hexagonal boron nitride (hBN) are essential building blocks for quantum photonic technologies that operate at room temperature. We experimentally demonstrate large-area arrays of plasmonic nanoresonators for Purcell-induced site-controlled SPEs. Our results offer arrays of bright, heterogeneously integrated quantum light sources, paving the way for robust and scalable quantum information systems.
arXiv Detail & Related papers (2024-05-03T23:02:30Z)
Fabrication of Sawfish photonic crystal cavities in bulk diamond [0.0]
"Sawfish" cavities are proposed to enhance the emission rate by a factor of 46 and couple photons into a single-mode fiber with an efficiency of 88%. The presented process allows for the fabrication of fully suspended devices with a total length of 20.5 $mu$m and features size as small as 40 nm.
arXiv Detail & Related papers (2023-11-07T00:05:46Z)
Purcell enhancement of silicon W centers in circular Bragg grating cavities [0.0]
In this work, we perform cavity quantum electrodynamics experiments with ensembles of artificial atoms embedded in silicon-on-insulator microresonators. We observe a 20-fold enhancement of the zero-phonon line intensity, together with a two-fold decrease of the total relaxation time in time-resolved photoluminescence experiments. We obtain a good agreement with our experimental results assuming a quantum efficiency of $65 pm 10 %$ for the emitters in bulk silicon.
arXiv Detail & Related papers (2023-10-27T13:09:27Z)
On-chip quantum information processing with distinguishable photons [55.41644538483948]
Multi-photon interference is at the heart of photonic quantum technologies. Here, we experimentally demonstrate that detection can be implemented with a temporal resolution sufficient to interfere photons detuned on the scales necessary for cavity-based integrated photon sources. We show how time-resolved detection of non-ideal photons can be used to improve the fidelity of an entangling operation and to mitigate the reduction of computational complexity in boson sampling experiments.
arXiv Detail & Related papers (2022-10-14T18:16:49Z)
Topologically Protecting Squeezed Light on a Photonic Chip [58.71663911863411]
Integrated photonics offers an elegant way to increase the nonlinearity by confining light strictly inside the waveguide. We experimentally demonstrate the topologically protected nonlinear process of spontaneous four-wave mixing enabling the generation of squeezed light on a silica chip.
arXiv Detail & Related papers (2021-06-14T13:39:46Z)
Resonant Excitation and Purcell Enhancement of Coherent Nitrogen-Vacancy Centers Coupled to a Fabry-P\'{e}rot Micro-Cavity [0.0]
nitrogen-vacancy (NV) center in diamond has been established as a prime building block for quantum networks. Poor optical coherence of near-surface NV centers has so far prevented their resonant optical control, as would be required for entanglement generation. We demonstrate resonant addressing of individual, fiber-cavity-coupled NV centers, and collection of their Purcell-enhanced coherent photon emission.
arXiv Detail & Related papers (2020-09-17T10:48:16Z)
Inverse-designed photon extractors for optically addressable defect qubits [48.7576911714538]
Inverse-design optimization of photonic devices enables unprecedented flexibility in tailoring critical parameters of a spin-photon interface. Inverse-designed devices will enable realization of scalable arrays of single-photon emitters, rapid characterization of new quantum emitters, sensing and efficient heralded entanglement schemes.
arXiv Detail & Related papers (2020-07-24T04:30:14Z)
Tunable quantum photonics platform based on fiber-cavity enhanced single photon emission from two-dimensional hBN [52.915502553459724]
In this work we present a hybrid system consisting of defect centers in few-layer hBN grown by chemical vapor deposition and a fiber-based Fabry-Perot cavity. We achieve very large cavity-assisted signal enhancement up to 50-fold and equally strong linewidth narrowing owing to cavity funneling. Our work marks an important milestone for the deployment of 2D materials coupled to fiber-based cavities in practical quantum technologies.
arXiv Detail & Related papers (2020-06-23T14:20:46Z)
Near-ideal spontaneous photon sources in silicon quantum photonics [55.41644538483948]
Integrated photonics is a robust platform for quantum information processing. Sources of single photons that are highly indistinguishable and pure, that are either near-deterministic or heralded with high efficiency, have been elusive. Here, we demonstrate on-chip photon sources that simultaneously meet each of these requirements.
arXiv Detail & Related papers (2020-05-19T16:46:44Z)

This list is automatically generated from the titles and abstracts of the papers in this site.