Path-Controlled Time Reordering of Paired Photons in a Dressed Three-Level Cascade

Bounouar, S.; Strauß, Max; Carmele, Alexander; Schnauber, Peter; Thoma, Alexander; Gschrey, Manuel; Schulze, Jan-Hindrik; Strittmatter, A.; Rodt, Sven; Knorr, Andreas; Reitzenstein, Stephan

doi:10.1103/physrevlett.118.233601

Cited by 36 publications

(27 citation statements)

References 38 publications

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“…As the TPE depends quadratically on the excitation power, this can be tested in the regime of strong pumping (requiring a multiple- π -pulse), at which TPE processes dominate the single-photon excitation of the exciton level. It might be even possible in this regime, to produce coherently excited two-photon states, which do not reveal the intrinsic time ordering of the cascade, as recently observed in experiments on the dressing of the biexciton state in QDs42. This could finally lead to the realization of efficient sources of close-to-ideal two-photon Fock-states |2〉 on a fully scalable technology platform.…”

Section: Discussionmentioning

confidence: 95%

A bright triggered twin-photon source in the solid state

et al. 2017

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A non-classical light source emitting pairs of identical photons represents a versatile resource of interdisciplinary importance with applications in quantum optics and quantum biology. To date, photon twins have mostly been generated using parametric downconversion sources, relying on Poissonian number distributions, or atoms, exhibiting low emission rates. Here we propose and experimentally demonstrate the efficient, triggered generation of photon twins using the energy-degenerate biexciton–exciton radiative cascade of a single semiconductor quantum dot. Deterministically integrated within a microlens, this nanostructure emits highly correlated photon pairs, degenerate in energy and polarization, at a rate of up to (234±4) kHz. Furthermore, we verify a significant degree of photon indistinguishability and directly observe twin-photon emission by employing photon-number-resolving detectors, which enables the reconstruction of the emitted photon number distribution. Our work represents an important step towards the realization of efficient sources of twin-photon states on a fully scalable technology platform.

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Section: Discussionmentioning

confidence: 95%

A bright triggered twin-photon source in the solid state

et al. 2017

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“…Two-photon process in quantum electrodynamics is important for investigating lightmatter interaction. Similar to single-photon process, two-photon Rabi oscillation occurs when two-photon exchange rate between an emitter and electromagnetic field exceeds their decay rates, providing a basis for multi-photon coherent control [1][2][3][4][5]. A single quantum dot (QD), containing exciton (X) and biexciton (XX) states, could serve as a two-photon emitter [6] with long coherence time [7].…”

mentioning

confidence: 99%

Two-Photon Rabi Splitting in a Coupled System of a Nanocavity and Exciton Complexes

Qian

Song

et al. 2018

Phys. Rev. Lett.

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Two-photon Rabi splitting in a cavity-dot system provides a basis for multiqubit coherent control in a quantum photonic network. Here we report on two-photon Rabi splitting in a strongly coupled cavity-dot system. The quantum dot was grown intentionally large in size for a large oscillation strength and small biexciton binding energy. Both exciton and biexciton transitions couple to a high-quality-factor photonic crystal cavity with large coupling strengths over 130 μeV. Furthermore, the small binding energy enables the cavity to simultaneously couple with two exciton states. Thereby, two-photon Rabi splitting between the biexciton and cavity is achieved, which can be well reproduced by theoretical calculations with quantum master equations.

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“…At low power, most of the emission results from the two single-photon transitions, as expected for cascade decay [20], while a comparatively smaller inelastic scattering peak appears at the drive frequency, corresponding to two-photon resonance fluorescence. At higher powers, each of the two singlephoton peaks is Stark-shifted away from the two-photon transition, and split into a doublet [17][18][19]. At the same time, the two-photon peak grows as strong as the singlephoton peaks, and eventually splits into a triplet.…”

mentioning

confidence: 99%

“…In the presence of a dipole-coupled intermediate state, the fluorescence spectrum is dominated by the emission of two photons in cascade. This scenario has been recently explored in the biexciton-exciton cascade of semiconductor quan- * simoneg@chalmers.se; Current address: Department of Microtechnology and Nanoscience MC2, Chalmers University of Technology, Kemivägen 9, SE-41296 Göteborg, Sweden tum dots [17][18][19], as well as in superconducting circuits [20]. At the same time, it has been shown theoretically that quasi-resonant intermediate states can assist inelastic scattering at the drive frequency, giving rise to twophoton resonance fluorescence [21].…”

mentioning

confidence: 99%

Two-photon resonance fluorescence of a ladder-type atomic system

et al. 2019

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Multi-photon emitters are a sought-after resource in quantum photonics. Nonlinear interactions between a multi-level atomic system and a coherent drive can lead to resonant two-photon emission, but harvesting light from this process has remained a challenge due to the small oscillator strengths involved. Here we present a study of two-photon resonance fluorescence at microwave frequencies, using a superconducting, ladder-type artificial atom, a transmon, strongly coupled to a waveguide. We drive the two-photon transition between the ground and second-excited state at increasingly high powers and observe a resonance fluorescence peak whose intensity becomes comparable to single-photon emission until it splits into a Mollow-like triplet. We measure photon correlations of frequency-filtered spectral lines and find that while emission at the fundamental frequency stays antibunched, the resonance fluorescence peak at the two-photon transition is superbunched. Our results provide a route towards the realization of multi-photon sources in the microwave domain.

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Path-Controlled Time Reordering of Paired Photons in a Dressed Three-Level Cascade

Cited by 36 publications

References 38 publications

A bright triggered twin-photon source in the solid state

A bright triggered twin-photon source in the solid state

Two-Photon Rabi Splitting in a Coupled System of a Nanocavity and Exciton Complexes

Two-photon resonance fluorescence of a ladder-type atomic system

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