Mapping the Local Density of Optical States of a Photonic Crystal with Single Quantum Dots

Wang, Qin; Stobbe, Søren; Lodahl, Peter

doi:10.1103/physrevlett.107.167404

Cited by 74 publications

(105 citation statements)

References 27 publications

(45 reference statements)

Supporting

Mentioning

100

Contrasting

Order By: Relevance

“…The insets in Fig. 2 show a sketch of the LDOS for the L3 and AL cavities, highlighting that while L3 PC cavities appear in the band gap where the background decay rate is strongly suppressed, 19 AL cavities appear as random resonances on top of a background LDOS representing the waveguide mode 26 giving rise to an emission channel. Similarly in micropillar cavities the coupling to radiation modes is not strongly suppressed.…”

Section: Comparison To Other Nanocavitiesmentioning

confidence: 99%

“…Our work constitutes a significant extension, into the realm of coherent quantum optics, of previous work where proper account of the QD fine structure enabled probing the incoherent local optical density of states (LDOS). 19 The applied method is expected to have widespread applications for probing phonon dephasing in advanced nanostructures where the combination of photonic and phononic band gaps 20 ultimately could enable complete coherent control over single-photon emission from QDs.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Measuring the effective phonon density of states of a quantum dot in cavity quantum electrodynamics

et al. 2013

View full text Add to dashboard Cite

(2013). Measuring the effective phonon density of states of a quantum dot in cavity quantum electrodynamics. Physical Review B Condensed Matter, 88(4) We employ detuning-dependent decay-rate measurements of a quantum dot in a photonic-crystal cavity to study the influence of phonon dephasing in a solid-state quantum-electrodynamics experiment. The experimental data agree with a microscopic non-Markovian model accounting for dephasing from longitudinal acoustic phonons, and the analysis explains the difference between nonresonant cavity feeding in different nanocavities. From the comparison between experiment and theory we extract the effective phonon density of states experienced by the quantum dot in the nanocavity. This quantity determines all phonon dephasing properties of the system and is found to be described well by a theory of bulk phonons.

show abstract

Section: Comparison To Other Nanocavitiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Measuring the effective phonon density of states of a quantum dot in cavity quantum electrodynamics

et al. 2013

View full text Add to dashboard Cite

show abstract

“…From the biexponential model we extract the spin-flip rate between the dark and bright excitons, the non-radiative, and the radiative decay rate from the bright exciton of different QDs, as explained in detail in Ref. [19]. According to our measurements, only the radiative decay rate is affected by disorder while the other decay rates remain unperturbed (not shown).…”

mentioning

confidence: 99%

“…Here, we present measurements of the C0 correlation in disordered photonic crystal membranes in the regime of Anderson localization 18 . We employ single InAs QDs that have recently been shown to be reliable probes of ρ(r0) in dielectric nanostructures when the internal fine-structure splitting and the non-radiative processes of the QD are properly accounted for 19 . We observe the transition to the regime of two-dimensional Anderson localization by varying the degree of disorder of our samples, which gives rise to a pronounced C0 correlation.…”

mentioning

confidence: 99%

Nonuniversal Intensity Correlations in a Two-Dimensional Anderson-Localizing Random Medium

et al. 2012

Self Cite

View full text Add to dashboard Cite

Complex dielectric media often appear opaque because light traveling through them is scattered multiple times. Although the light scattering is a random process, different paths through the medium can be correlated encoding information about the medium. Here, we present spectroscopic measurements of nonuniversal intensity correlations that emerge when embedding quantum emitters inside a disordered photonic crystal that is found to Anderson-localize light. The emitters probe in-situ the microscopic details of the medium, and imprint such near-field properties onto the farfield correlations. Our findings provide new ways of enhancing light-matter interaction for quantum electrodynamics and energy harvesting, and may find applications in subwavelength diffuse-wave spectroscopy for biophotonics. PACS numbers: (42.25.Dd, 42.25.Fx, 46.65.+g, 42.70.Qs) Correlations are of paramount importance in science and technology and offer fundamental insight into disparate disciplines ranging from establishing the role of inflation in the early universe 1 , through mesocopic transport of electrons and photons in complex media 2 , to the non-locality of quantum mechanics observed at the microscopic scale 3 . In photonics, recording correlation functions provides a powerful method of revealing information of the quantum state of light 4 and correlations may be exploited for imaging beyond the classical diffraction limit 5 . The emerging field of nanophotonics promises a number of new applications for controlling and manipulating light. However, unavoidable inhomogeneities lead to random multiple scattering that requires a statistical description. Surprisingly, such multiple scattering can give rise to pronounced correlations between different propagation paths through the complex medium, at variance with the intuitive perception that random scattering fully scrambles all information. Such correlations can be either of classical 6 or quantum 7 character and are traditionally universal, i.e., they depend solely on a single parameter, the universal conductance, and are independent of the microscopic details of the medium. Placing a light source inside the medium creates a fundamentally new situation. In this case, nonuniversal correlations in the far field have been predicted 8 that depend sensitively on the local environment of the embedded emitter 9 , and thus can be employed for probing the local properties of a complex medium. Consequently, recording the nonuniversal correlation function has been proposed as a novel method for in-situ spectroscopy with ultra-high resolution in a complex and disordered medium 10 , and algorithms have been proposed for imaging a source in an opaque medium from measurements of the local electromagnetic field density 11 . In this Letter, we measure for the first time the nonuniversal correlations generated by single dipole emitters in a strongly scattering random medium.Figure 1(a) illustrates an intensity speckle pattern generated by a dipole source embedded in a disordered photonic crystal membra...

show abstract

“…Ensemble averaging by measuring band structures of different parts of the sample should smoothen the envelope of the reconstructed DOS and will give the possibility to quantitatively study the shape of the Lifshitz tail. We also predict that the Lifshitz tail should appear when the DOS is directly probed by studying emission of embedded quantum dots [15,42].…”

mentioning

confidence: 99%

Measurement of a band-edge tail in the density of states of a photonic-crystal waveguide

et al. 2012

View full text Add to dashboard Cite

We measure localized and extended mode profiles at the band edge of slow-light photonic-crystal waveguides using phase-sensitive near-field microscopy. High-resolution band structures are obtained and interpreted, allowing the retrieval of the optical density of states (DOS). This constitutes a first observation of the DOS of a periodic system with weak disorder. The Van Hove singularity in the DOS expected at the band edge of an ideal 1D periodic structure is removed by the disorder. The Anderson-localized states form a "tail" in the density of states, as predicted by Lifshitz for solid-state systems.

show abstract

Mapping the Local Density of Optical States of a Photonic Crystal with Single Quantum Dots

Cited by 74 publications

References 27 publications

Measuring the effective phonon density of states of a quantum dot in cavity quantum electrodynamics

Measuring the effective phonon density of states of a quantum dot in cavity quantum electrodynamics

Nonuniversal Intensity Correlations in a Two-Dimensional Anderson-Localizing Random Medium

Measurement of a band-edge tail in the density of states of a photonic-crystal waveguide

Contact Info

Product

Resources

About