Conditions for entangled photon emission from (111)B site-controlled Pyramidal quantum dots
arXiv:1502.05249 · doi:10.1063/1.4916705
Abstract
A study of highly symmetric site-controlled Pyramidal In0.25Ga0.75As quantum dots (QDs) is presented. It is discussed that polarization-entangled photons can be also obtained from Pyramidal QDs of different designs from the one already reported in Juska et al. (Nat. Phot. 7, 527, 2013). Moreover, some of the limitations for a higher density of entangled photon emitters are addressed. Among these issues are (1) a remaining small fine-structure splitting and (2) an effective QD charging under non-resonant excitation conditions, which strongly reduce the number of useful biexciton-exciton recombination events. A possible solution of the charging problem is investigated exploiting a dual-wavelength excitation technique, which allows a gradual QD charge tuning from strongly negative to positive and, eventually, efficient detection of entangled photons from QDs, which would be otherwise ineffective under a single-wavelength (non-resonant) excitation.
References in corpus (24)
- On the Measurement of Qubits
- Entangled Photon Pairs from Semiconductor Quantum Dots
- On-demand generation of indistinguishable polarization-entangled photon pairs
- Charge noise and spin noise in a semiconductor quantum device
- Towards quantum dot arrays of entangled photon emitters
- Observation of strongly entangled photon pairs from a nanowire quantum dot
- Analysis of the exciton-exciton interaction in semiconductor quantum wells
- Coherence of an Entangled Exciton-Photon State
- Symmetric quantum dots as efficient sources of highly entangled photons
- Evolution of entanglement within classical light states
- Bell states generation on a III-V semiconductor chip at room temperature
- An entangled two photon source using biexciton emission of an asymmetric quantum dot in a cavity
- Excitons and charged excitons in semiconductor quantum wells
- Influence of well width fluctuations on the binding energy of excitons, charged excitons and biexcitons in GaAs-based quantum wells
- A site-controlled quantum dot system offering both high uniformity and spectral purity
- Polarization entangled photons from quantum dots embedded in nanowires
- Polarization sensitive spectroscopy of charged Quantum Dots
- Decomposition, diffusion, and growth rate anisotropies in self-limited profiles during metalorganic vapor-phase epitaxy of seeded nanostructures
- Bunching visibility for correlated photons from single GaAs quantum dots
- Two-photon- photoluminescence excitation spectroscopy of single quantum-dots
- Reply to ``Comment on `Inverse exciton series in the optical decay of an excitonic molecule' "
- Complex optical signatures from quantum dot nanostructures and behavior in inverted pyramidal recesses
- Effects of charged defects on the electronic and optical properties of self-assembled quantum dots
- Transient and self-limited nanostructures on patterned surfaces
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- Single pairs of time-bin entangled photons
- Vanishing biexciton binding energy from stacked, MOVPE grown, site-controlled pyramidal quantum dots for twin photon generation
- Self-ordered nanostructures on patterned substrates: Experiment and theory of metalorganic vapor-phase epitaxy of V-groove quantum wires and pyramidal quantum dots
- Statistical study of stacked/coupled site-controlled pyramidal quantum dots and their excitonic properties
- Theoretical analysis of influence of random alloy fluctuations on the opto-electronic properties of site-controlled (111)-oriented InGaAs/GaAs quantum dots
- Single site-controlled inverted pyramidal InGaAs QD-nanocavity operating at the onset of the strong coupling regime
- Optical pumping and initialization of a hole spin in site-controlled InGaAs pyramidal quantum dots
- Biexciton Initialization by Two-Photon Excitation in Site-Controlled Quantum Dots: the Complexity of the Antibinding State Case
- Excitonic lasing of strain-free InP(As) quantum dots in AlInAs microdisk
- Self-aligned pillar arrays embedding site-controlled single quantum dots for enhanced non-classical light emission