arXiv subjects

Mio Poortvliet

Publications and source records attributed to Mio Poortvliet.

3 recordsLinked to original sources

arXiv2026

Pulsed to continuous-wave quantum dot cavity-QED

Resonant cavity-quantum system interactions are well understood in the pulsed coherent and continuous-wave steady-state limits, but not much in between. We investigate the intermediate regime, where pulse duration, coupling, decoherences, and decays occur on comparable timescales, and pulse bandwidth matches cavity splitting and detunings. We reveal an interplay of cavity-enhanced excitation and Purcell-enhanced emission leading to warped chevron patterns. We develop a quantum master-equation model that efficiently treats the excitation-light coherent states in photon number space and reproduces the experimental data. Using these results we identify how polarization-split cavities can optimize single-photon purity and emission probability.

quant-ph↗

arXiv2025

Towards experimental demonstration of quantum position verification using true single photons

The geographical position can be a good credential for authentication of a party, this is the basis of position-based cryptography - but classically this cannot be done securely without physical exchange of a private key. However, recently, it has been shown that by combining quantum mechanics with the speed of light limit of special relativity, this might be possible: quantum position verification. Here we demonstrate experimentally a protocol that uses two-photon Hong-Ou-Mandel interference at a beamsplitter, which, in combination with two additional beam splitters and 4 detectors is rendering the protocol resilient to loss. With this we are able to show first results towards an experimental demonstration of quantum position verification.

quant-ph↗

arXiv2024

Picosecond laser pulses for quantum dot-microcavity based single photon generation by cascaded electro-optic modulation of a narrow-linewidth laser

Recent developments in integrated optics have made it possible to fabricate high-bandwidth electro-optic modulators (EOMs). Here we show cascaded operation of two of such modulators driven by custom-built electronics delivering on-demand picosecond pulses and application to a quantum dot cavity-QED single photon source. We implement an EOM-based correlation technique and demonstrate light pulses as short as 24$\pm$2 ps with a single EOM. The EOMs can be synchronized and operated in series, we then produce optical pulses down to 17 ps. To optimize the pulse contrast, we analyze for two different EOM devices the transmission as a function of EOM bias, wavelength and temperature, and we show that by temperature tuning and stabilization, a pulse contrast above 25 dB can be obtained at the targeted wavelength. With this high contrast we demonstrate resonant excitation of an InGaAs quantum dot - microcavity based single photon source, demonstrating a crucial technology for scalability and synchronization of large scale photonic quantum applications.

physics.optics↗