Control of a quantum emitter's bandwidth by managing its reactive power

Liberal, Iñigo; Ederra, I.; Ziolkowski, Richard W.

doi:10.1103/physreva.100.023830

Cited by 20 publications

(17 citation statements)

References 67 publications

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“…This contribution reflects the absorptive part of the mode dissipation. Furthermore, we note that the expression forS in μη,α (ω) for a single mode is similar to the classical absorptive part connected to the Poynting theorem [58], and we will henceforth call it the nonradiative partS in μη,α (ω) =S nrad μη,α (ω). We are left with the contribution connected toS out μη (ω) = lim α→0 lim λ→∞S out μη,αλ (ω):…”

Section: Commutation Relation Of the Qnm Operators In The Dielectrmentioning

confidence: 99%

Fluctuation-dissipation theorem and fundamental photon commutation relations in lossy nanostructures using quasinormal modes

Franke

Ren

Hughes

et al. 2020

Phys. Rev. Research

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We provide theory and formal insight on the Green function quantization method for absorptive and dispersive spatial-inhomogeneous media in the context of dielectric media. We show that a fundamental Green function identity, which appears, e.g., in the fundamental commutation relation of the electromagnetic fields, is also valid in the limit of nonabsorbing media. We also demonstrate how the zero-point field fluctuations yields a nonvanishing surface term in configurations without absorption, when using a more formal procedure of the Green function quantization method. We then apply the presented method to a recently developed theory of photon quantization using quasinormal modes [Franke et al., Phys. Rev. Lett. 122, 213901 (2019)] for finite nanostructures embedded in a lossless background medium. We discuss the strict dielectric limit of the commutation relations of the quasinormal mode operators and present different methods to obtain them, connected to the radiative loss for nonabsorptive but open resonators. We show exemplary calculations of a fully three-dimensional photonic crystal beam cavity, including the lossless limit, which supports a single quasinormal mode and discuss the limits of the commutation relation for vanishing damping.

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Section: Commutation Relation Of the Qnm Operators In The Dielectrmentioning

confidence: 99%

Fluctuation-dissipation theorem and fundamental photon commutation relations in lossy nanostructures using quasinormal modes

Franke

Ren

Hughes

et al. 2020

Phys. Rev. Research

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show abstract

“…It must be noticed that even in these cases, the interaction between the emitter and the reservoir modes can be quite strong, and the induced frequency shifts can be large enough to significantly affect the bandwidth of the emitter radiation. [ 45 ] One can even seek to manipulate the emission spectrum and, at the same time, greatly enhance the emission rate, as is the case for the recently suggested hybrid antenna‐cavity scheme. [ 44,46 ]…”

Section: Quantum Antennasmentioning

confidence: 99%

“…In particular, it has recently been shown that a system with one upper and three degenerate lower levels can act as an isotropic unpolarized coherent single‐photon emitter. [ 45 ]…”

Section: Quantum Antennasmentioning

confidence: 99%

“…Such types of media are proposed as an alternative platform to manipulate the decay of quantum emitters, possibly leading to efficient usage in the quantum antennas control. [ 45,280–282 ] A thin layer of ENZ material demonstrates the existence of Ferrell–Berreman modes with a shallow slope within the frequency bands bounded by the points of zero group velocity. [ 283,284 ] Since these “stop‐light” modes are formed in a film thinner than the skin depth, the transverse field is expected to be homogeneous throughout the film.…”

Section: Implementation and Materials For Quantum Antennasmentioning

confidence: 99%

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Quantum Antennas

2020

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Due to the recent groundbreaking developments of nanotechnologies, it became possible to create intrinsically quantum systems able to serve as high-directional antennas in terahertz, infrared, and optical ranges. In fact, the quantum antennas, as devices shaping light on the level of single quanta, have already become key elements in nanooptics and nanoelectronics. The quantum antennas are actively researched for possible implementations in quantum communications, quantum imaging and sensing, and energy harvesting. However, the design and optimization of these emitting/receiving devices are still rather undeveloped in comparison with the well-known methods for conventional radio-frequency antennas. This review provides a discussion of the recent achievements in the concept of the quantum antenna as an open quantum system emitting via interaction with a photonic reservoir. The review is focused on bridging the gap between quantum antennas and their macroscopic classical analogues. Furthermore, the way of quantum-antenna implementation is discussed for different configurations, based on such materials as plasmonic metals, carbon nanotubes, and semiconductor quantum dots.

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“…Ref. 52) as an integral over the (time-averaged) Poynting vector, which in terms of the classical fields yields S Poynting =0.5Re(E(ω) × H * (ω)). The S rad (ω) thus has a clear interpretation: it is the normalized QNM power flow outside the antenna and it appears naturally in our formalism.…”

Section: B Quantized Quasinormal Mode Theorymentioning

confidence: 99%

Theory and Limits of On-Demand Single-Photon Sources Using Plasmonic Resonators: A Quantized Quasinormal Mode Approach

et al. 2019

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Quantum emitters coupled to plasmonic resonators are known to allow enhanced broadband Purcell factors, and such systems have been recently suggested as possible candidates for on-demand single photon sources, with fast operation speeds. However, a true single photon source has strict requirements of high efficiency (brightness) and quantum indistinguishability of the emitted photons, which can be quantified through two-photon interference experiments. To help address this problem, we employ and extend a recently developed quantized quasinormal mode approach, which rigorously quantizes arbitrarily lossy open system modes, to compute the key parameters that accurately quantify the figures of merit for plasmon-based single photon sources. We also present a quantized input-output theory to quantify the radiative and nonradiative quantum efficiencies. We exemplify the theory using a nanoplasmonic dimer resonator made up of two gold nanorods, which yields large Purcell factors and good radiative output beta factors. Considering an optically pulsed excitation scheme, we explore the key roles of pulse duration and pure dephasing on the single photon properties, and show that ultrashort pulses (sub-ps) are generally required for such structures, even for low temperature operation. We also quantify the role of the nonradiative beta factor both for single photon and two-photon emission processes. Our general approach can be applied to a wide variety of plasmon systems, including metal-dielectrics, and cavity-waveguide systems, without recourse to phenomenological quantization schemes.

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Control of a quantum emitter's bandwidth by managing its reactive power

Cited by 20 publications

References 67 publications

Fluctuation-dissipation theorem and fundamental photon commutation relations in lossy nanostructures using quasinormal modes

Fluctuation-dissipation theorem and fundamental photon commutation relations in lossy nanostructures using quasinormal modes

Quantum Antennas

Theory and Limits of On-Demand Single-Photon Sources Using Plasmonic Resonators: A Quantized Quasinormal Mode Approach

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