Transparency in a chain of disparate quantum emitters strongly coupled to a waveguide

Mukhopadhyay, Debsuvra; Agarwal, G. S.

doi:10.1103/physreva.101.063814

Cited by 27 publications

(20 citation statements)

References 85 publications

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“…Enhanced Bragg reflection off a chain of identical atoms trapped in an optical lattice in a waveguide was demonstrated in [158]. An ensemble of emitters interfacing with a waveguide, as shown in figure 22, exhibits a myriad of exotic phenomena such as single-photon super-and sub-radiance [159,160], nonreciprocal photon transport, and asymmetrical Fano lineshapes. When the lattice periodicity equals an integer multiple of the wavelength, the cooperative emission from the atomic array retains its Lorentzian profile with a linearly scaling decay rate, as has been demonstrated in [159,161].…”

Section: Statusmentioning

confidence: 99%

“…By stimulating interaction between photons, a multi-spin cluster can serve as an optical switch or nearly any possible quantum gate. Possibility of transparency due to single-photon transport across differentially detuned two-level emitters has been theoretically demonstrated, without applying any control field [160]. Directional dependence of the emission can entail asymmetric relaxation rates to the left-and right-propagating modes, which significantly modifies the transport.…”

Section: Statusmentioning

confidence: 99%

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2022 Roadmap on integrated quantum photonics

et al. 2022

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Integrated photonics will play a key role in quantum systems as they grow from few-qubit prototypes to tens of thousands of qubits. The underlying optical quantum technologies can only be realized through the integration of these components onto quantum photonic integrated circuits (QPICs) with accompanying electronics. In the last decade, remarkable advances in quantum photonic integration have enabled table-top experiments to be scaled down to prototype chips with improvements in efficiency, robustness, and key performance metrics. These advances have enabled integrated quantum photonic technologies combining up to 650 optical and electrical components onto a single chip that are capable of programmable quantum information processing, chip-to-chip networking, hybrid quantum system integration, and high-speed communications. In this roadmap article, we highlight the status, current and future challenges, and emerging technologies in several key research areas in integrated quantum photonics, including photonic platforms, quantum and classical light sources, quantum frequency conversion, integrated detectors, and applications in computing, communications, and sensing. With advances in materials, photonic design architectures, fabrication and integration processes, packaging, and testing and benchmarking, in the next decade we can expect a transition from single- and few-function prototypes to large-scale integration of multi-functional and reconfigurable devices that will have a transformative impact on quantum information science and engineering.

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Section: Statusmentioning

confidence: 99%

Section: Statusmentioning

confidence: 99%

2022 Roadmap on integrated quantum photonics

et al. 2022

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“…Mahmoodian et al reported that strongly correlated photon emission can be achieved in optically dense emitter ensembles chirally coupled to waveguides even with weak coupling strengths [43]. And Mukhopadhyay and Agarwal have discussed the possibility of achieving perfect transparency in a chain of an even number of nonidentical QEs coupled to a waveguide with separation equal to a halfintegral multiple of resonant wavelength [44].…”

Section: Routing Improvement Due To Collective Effects Of Multiplementioning

confidence: 99%

Collective photon routing improvement in a dissipative quantum emitter chain strongly coupled to a chiral waveguide QED ladder

Poudyal

Mirza

2020

Phys. Rev. Research

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We examine the routing scheme of single photons in a one-dimensional periodic chain of two-level quantum emitters (QEs) strongly coupled to two waveguides in a ladder configuration. It is known that for a single-emitter chiral waveguide ladder setting photons can be redirected from one waveguide to another with a 100% probability (deterministically) provided the resonance condition is met and spontaneous emission is completely ignored. However, when the spontaneous emission is included the routing scheme becomes considerably imperfect. In this paper, we present a solution to this issue by considering a chain of QEs where, in addition to the waveguide mediated interaction among emitters, a direct and infinitely long-ranged dipole-dipole interaction (DDI) is taken into account. We show that the collective effects arising from the strong DDI protect the routing scheme from spontaneous emission loss. In particular, we demonstrate that the router operation can be improved from 58 to ≈95% in a typical dissipative chiral light-matter interface consisting of nanowire modes strongly interacting with a linear chain of 30 quantum dots. With the recent experimental progress in chiral quantum optics, trapped QEs evanescently coupled to tapered nanofibers can serve as a platform for the experimental realization of this paper.

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“…Thus quantum devices with high efficiency, including quantum routers [4,10,[23][24][25][26], single-photon transistors [9,27] and quantum frequency converters [28][29][30][31][32][33], can be realized in the wQED structures. In particular, when two or more atoms coupled to a 1D continuum, the interactions mediated by the guided modes as well as the interferences between photons re-emitted by different atoms, can enable a number of interesting effects, such as asymmetric Fano lineshapes [34][35][36][37][38], electromagnetically induced transparency (EIT) without control field [39][40][41], waveguide-mediated entanglement between distant atoms [42][43][44][45], generation of photonic band gap [46,47], cavity QED with atomic mirrors [48,49], creating and engineering superradiant and subradiant states [50][51][52][53], and so on.…”

Section: Introductionmentioning

confidence: 99%

“…Then, based on these general expressions, we further analyze two important phenomena, asymmetric Fano lineshape and EIT without control field, which can be observed from the scattering spectra. These phenomena also exist in the wQED system containing multiple small atoms [34][35][36][37][38][39][40][41], but their counter part in giant-atom systems will give rise to some different features due to additional interference effects and diverse configurations. Specifically, we find that the appearance of Fano interferences is strongly influenced by both the phase delay between coupling points and the topologies of system.…”

Section: Introductionmentioning

confidence: 99%

Manipulating single-photon transport in a waveguide-QED structure containing two giant atoms

Feng,

Jia

2022

Preprint

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We investigate coherent single-photon transport in a waveguide-QED structure containing two giant atoms. The unified analytical expressions of the single-photon scattering amplitudes applicable for different topological configurations are derived. The spectroscopic characteristics in different parameter regimes, especially the asymmetric Fano lineshapes and the EIT-like spectra, are analyzed in detail. Specifically, we find that the appearance of Fano lineshapes is influenced by not only the phase delays between coupling points but also the topologies of system. We also summarize the general conditions for appearance of EIT-like spectra by analyzing the master equation, and verify these conditions by checking the corresponding analytical expressions of the scattering spectra. These phenomena may provide powerful tools for controlling and manipulating photon transport in the future quantum networks.

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Transparency in a chain of disparate quantum emitters strongly coupled to a waveguide

Cited by 27 publications

References 85 publications

2022 Roadmap on integrated quantum photonics

2022 Roadmap on integrated quantum photonics

Collective photon routing improvement in a dissipative quantum emitter chain strongly coupled to a chiral waveguide QED ladder

Manipulating single-photon transport in a waveguide-QED structure containing two giant atoms

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