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Open Quantum Systems Decoherence Photonic Quantum Computing Spin Qubits Silicon Quantum Computing

Exploring Dephasing of a Solid-State Quantum Emitter via Time- and Temperature- Dependent Hong-Ou-Mandel Experiments

arXiv

Authors: A. Thoma, P. Schnauber, M. Gschrey, M. Seifried, J. Wolters, J. -H. Schulze, A. Strittmatter, S. Rodt, A. Carmele, A. Knorr, T. Heindel, S. Reitzenstein

Year

2015

Paper ID

28015

Status

Preprint

Abstract Read

~2 min

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Abstract

We probe the indistinguishability of photons emitted by a semiconductor quantum dot (QD) via time- and temperature- dependent two-photon interference (TPI) experiments. An increase in temporal-separation between consecutive photon emission events, reveals a decrease in TPI visibility on a nanosecond timescale, theoretically described by a non-Markovian noise process in agreement with fluctuating charge-traps in the QD's vicinity. Phonon-induced pure dephasing results in a decrease in TPI visibility from \(96pm4\) % at 10\,K to a vanishing visibility at 40\,K. In contrast to Michelson-type measurements, our experiments provide direct access to the time-dependent coherence of a quantum emitter at a nanosecond timescale.

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We probe the indistinguishability of photons emitted by a semiconductor quantum dot (QD) via time- and temperature- dependent two-photon interference (TPI) experiments.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1507.05900 [2] arXiv https://arxiv.org/abs/1507.05900 [3] Publisher https://arxiv.org/abs/1507.05900

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