Triggered single-photon emission from electrically excited quantum dots in the red spectral range

Reischle, M.; Kessler, Christian; Schulz, Wolfgang-Michael; Eichfelder, M.; Roßbach, R.; Jetter, Michael; Michler, Peter

doi:10.1063/1.3497016

Cited by 27 publications

(23 citation statements)

References 20 publications

(14 reference statements)

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“…900 nm) would also allow for short-distance communication in standard telecom fiber as proposed by P D Townsend [18], a fact highlighting the flexibility of QD-based SPSs for quantum cryptography applications. Both device approaches have recently proven their potential, acting as efficient SPSs under pulsed electrical current injection featuring high single-photon emission rates and strong suppression of multiphoton emission events [19,20] and thus provide an excellent technology platform for the implementation of QKD experiments.…”

Section: Introductionmentioning

confidence: 99%

Quantum key distribution using quantum dot single-photon emitting diodes in the red and near infrared spectral range

Heindel

Kessler²,

Rau

et al. 2012

New J. Phys.

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Abstract. We report on in-lab free space quantum key distribution (QKD) experiments over 40 cm distance using highly efficient electrically driven quantum dot single-photon sources emitting in the red as well as near-infrared spectral range. In the case of infrared emitting devices, we achieve sifted key rates of 27.2 kbit s −1 (35.4 kbit s −1 ) at a quantum bit error rate (QBER) of 3.9% (3.8%) and a g (2) (0) value of 0.35 (0.49) at moderate (high) excitation. (2) (0) value of 0.49. This first successful proof of principle QKD experiment based on electrically operated semiconductor single-photon sources can be considered as a major step toward practical and efficient quantum cryptography scenarios. Contents

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Section: Introductionmentioning

confidence: 99%

Quantum key distribution using quantum dot single-photon emitting diodes in the red and near infrared spectral range

Heindel

Kessler²,

Rau

et al. 2012

New J. Phys.

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“…In the area of quantum photonics, high-quality singlephoton sources have been developed and can readily be integrated with conventional waveguiding elements [1][2][3][4][5][6] (for an overview we refer to Ref. [7]).…”

Section: Introductionmentioning

confidence: 99%

Few-photon transport in low-dimensional systems

2011

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We analyze the role of quantum interference effects induced by an embedded two-level system on the photon transport properties in waveguiding structures that exhibit cutoffs (band edges) in their dispersion relation. In particular, we demonstrate that these systems invariably exhibit single-particle photon-atom bound states and strong effective nonlinear responses on the few-photon level. Based on this, we find that the properties of these photon-atom bound states may be tuned via the underlying dispersion relation and that their occupation can be controlled via multiparticle scattering processes. This opens an interesting route for controlling photon transport properties in a number of solid-state-based quantum optical systems and the realization of corresponding functional elements and devices.

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“…7 Electrical excitation of single-photon sources (SPS) can be realized by placing the QDs in the intrinsic region of a p-i-n diode. 8,9 Triggered single-photon emission is required for most applications, and for this, pulsed electrical excitation of the QDs is highly desirable and has been demonstrated for emission in the near-infrared, 10-12 the red, 13 and the telecom spectral ranges. 14 Previous experiments rely on short excitation pulses in comparison to the exciton recombination time since the reexcitation of the system during the pump pulse compromises the photon antibunching.…”

Section: Introductionmentioning

confidence: 99%

Strong antibunching from electrically driven devices with long pulses: A regime for quantum-dot single-photon generation

et al. 2012

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We present excitation-pulse-width-and pump-power-dependent microelectroluminescence and photon statistics measurements on electrically driven single-photon devices based on InP/AlGaInP quantum dots (QDs). For an excitation regime far below QD saturation, the results show a characteristic decrease of the purity of the single-photon emission [g (2) (0) value] with increasing excitation pulse width. For stronger excitation pulses close to QD saturation, strong antibunching is maintained for a much larger pulse width. In this case the ground-state exciton emission, which is used for the single-photon source, is inhibited during the pump pulse due to the presence of higher excited states. This prevents multiple-ground-state emission and reexcitation during long pump pulses and delays the single-photon emission to the end of the pulse, as predicted by theory and confirmed experimentally.

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Triggered single-photon emission from electrically excited quantum dots in the red spectral range

Cited by 27 publications

References 20 publications

Quantum key distribution using quantum dot single-photon emitting diodes in the red and near infrared spectral range

Quantum key distribution using quantum dot single-photon emitting diodes in the red and near infrared spectral range

Few-photon transport in low-dimensional systems

Strong antibunching from electrically driven devices with long pulses: A regime for quantum-dot single-photon generation

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