Mechanistic Understanding of Entanglement and Heralding in Cascade
Emitters
- URL: http://arxiv.org/abs/2009.14008v1
- Date: Tue, 29 Sep 2020 13:43:51 GMT
- Title: Mechanistic Understanding of Entanglement and Heralding in Cascade
Emitters
- Authors: Kobra N.Avanaki and George C. Schatz
- Abstract summary: We theoretically investigate the properties of quantum emitters (QEs) as a source of entangled photons with practical quantum properties.
Through the theoretical analysis, we characterize the properties of a cascade (biexciton) emitter.
We show how the purity and the degree of entanglement are connected to the production of heralded single photons.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Semiconductor quantum light sources are favorable for a wide range of quantum
photonic tasks, particularly quantum computing and quantum information
processing. Here we theoretically investigate the properties of quantum
emitters (QEs) as a source of entangled photons with practical quantum
properties including heralding of on-demand single photons. Through the
theoretical analysis, we characterize the properties of a cascade (biexciton)
emitter, including (1) studies of single-photon purity, (2) investigating the
first- and second- order correlation functions, and (3) determining the Schmidt
number of the entangled photons. The analytical expression derived for the
Schmidt number of the cascade emitters reveals a strong dependence on the ratio
of decay rates of the first and second photons. Looking into the joint spectral
density of the generated biphotons, we show how the purity and the degree of
entanglement are connected to the production of heralded single photons.
Our model is further developed to include polarization effects, fine
structure splitting, and the emission delay between the exciton and biexciton
emission. The extended model offers more details about the underlying mechanism
of entangled photon production, and it provides additional degrees of freedom
for manipulating the system and characterizing purity of the output photon. The
theoretical investigations and the analysis provide a cornerstone for the
experimental design and engineering of on-demand single photons.
Related papers
- Generation and characterization of polarization-entangled states using
quantum dot single-photon sources [0.0]
Single-photon sources based on semiconductor quantum dots find several applications in quantum information processing.
We implement this approach via a simple and compact design that generates entangled photon pairs in the polarization degree of freedom.
Our source shows long-term stability and high quality of the generated entangled states, thus constituting a reliable building block for optical quantum technologies.
arXiv Detail & Related papers (2023-08-04T16:07:12Z) - Bursts of polarised single photons from atom-cavity sources [3.6594988197536344]
We propose a scheme for producing bursts of polarised single photons by coupling a generalised atomic emitter to an optical cavity.
In connection with two re-preparation methods, simulations predict 10-photon bursts coincidence count rates on the order of 1 kHz.
This paves the way for novel n-photon experiments with atom-cavity sources.
arXiv Detail & Related papers (2023-05-08T17:39:21Z) - Probing many-body correlations using quantum-cascade correlation
spectroscopy [0.0]
The radiative quantum cascade, i.e. the consecutive emission of photons from a ladder of energy levels, is of fundamental importance in quantum optics.
Here, we use exciton polaritons to explore the cascaded emission of photons in the regime where individual transitions of the ladder are not resolved.
Remarkably, the measured photon-photon correlations exhibit a strong dependence on the polariton energy, and therefore on the underlying polaritonic interaction strength.
arXiv Detail & Related papers (2022-12-18T09:51:12Z) - Strong single-photon to two-photon bundles emission in spin-1
Jaynes-Cummings model [3.230778132936486]
We study the nonclassical photon emission in a single spin-1 atom coupled to an optical cavity with constructing a spin-1 Jaynes-Cummings model.
The photon emission exhibit high-quality single photon and two-photon bundles properties with large photon numbers in the cavity and atom driven cases.
arXiv Detail & Related papers (2022-09-27T13:52:41Z) - Tunable photon-mediated interactions between spin-1 systems [68.8204255655161]
We show how to harness multi-level emitters with several optical transitions to engineer photon-mediated interactions between effective spin-1 systems.
Our results expand the quantum simulation toolbox available in cavity QED and quantum nanophotonic setups.
arXiv Detail & Related papers (2022-06-03T14:52:34Z) - Quantum density matrix theory for a laser without adiabatic elimination
of the population inversion: transition to lasing in the class-B limit [62.997667081978825]
No class-B quantum density-matrix model is available to date, capable of accurately describing coherence and photon correlations within a unified theory.
Here we carry out a density-matrix theoretical approach for generic class-B lasers, and provide closed equations for the photonic and atomic reduced density matrix in the Fock basis of photons.
This model enables the study of few-photon bifurcations and non-classical photon correlations in class-B laser devices, also leveraging quantum descriptions of coherently coupled nanolaser arrays.
arXiv Detail & Related papers (2022-05-26T16:33:51Z) - Silicon nitride waveguides with intrinsic single-photon emitters for
integrated quantum photonics [97.5153823429076]
We show the first successful coupling of photons from intrinsic single-photon emitters in SiN to monolithically integrated waveguides made of the same material.
Results pave the way toward the realization of scalable, technology-ready quantum photonic integrated circuitry.
arXiv Detail & Related papers (2022-05-17T16:51:29Z) - Nonclassical correlated deterministic single-photon pairs for a trapped
atom in bimodal cavities [0.0]
Single photons and single-photon pairs, inherently nonclassical in their nature, are fundamental elements of quantum sciences and technologies.
We propose to realize the nonclassical correlated deterministic photon pairs at the single-photon level for a single atom trapped in bimodal cavities.
arXiv Detail & Related papers (2022-04-15T08:05:26Z) - Two-photon resonance fluorescence of two interacting non-identical
quantum emitters [77.34726150561087]
We study a system of two interacting, non-indentical quantum emitters driven by a coherent field.
We show that the features imprinted by the two-photon dynamics into the spectrum of resonance fluorescence are particularly sensitive to changes in the distance between emitters.
This can be exploited for applications such as superresolution imaging of point-like sources.
arXiv Detail & Related papers (2021-06-04T16:13:01Z) - Room temperature single-photon emitters in silicon nitride [97.75917079876487]
We report on the first-time observation of room-temperature single-photon emitters in silicon nitride (SiN) films grown on silicon dioxide substrates.
As SiN has recently emerged as one of the most promising materials for integrated quantum photonics, the proposed platform is suitable for scalable fabrication of quantum on-chip devices.
arXiv Detail & Related papers (2021-04-16T14:20:11Z) - 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.
This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.