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Qubit Coherence Noise Stability Characterization Spin Qubits Silicon Quantum Computing

Frequency Feedback for Two-Photon Interference from Separate Quantum Dots

arXiv
Authors: Michael Zopf, Tobias Macha, Robert Keil, Eduardo Uruñuela, Yan Chen, Wolfgang Alt, Lothar Ratschbacher, Fei Ding, Dieter Meschede, Oliver G. Schmidt

Year

2017

Paper ID

2586

Status

Preprint

Abstract Read

~2 min

Abstract Words

86

Citations

N/A

Abstract

We employ active feedback to stabilize the frequency of single photons emitted by two separate quantum dots to an atomic standard. The transmission of a single, rubidium-based Faraday filter serves as the error signal for frequency stabilization to less than 1.5% of the emission linewidth. Long-term stability is demonstrated by Hong-Ou-Mandel interference between photons from the two quantum dots. The observed visibility of Vlock=\(41 pm 5\)% is limited only by internal dephasing of the dots. Our approach facilitates quantum networks with indistinguishable photons from distributed emitters.

Why This Paper Matters

  • This paper contributes to the Spin Qubits & Silicon Quantum Computing research area in the Quantum Articles archive.
  • It adds a 2017 reference point for readers tracking recent quantum research.
  • We employ active feedback to stabilize the frequency of single photons emitted by two separate quantum dots to an atomic standard.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1712.08158 [2] arXiv https://arxiv.org/abs/1712.08158 [3] Publisher https://arxiv.org/abs/1712.08158

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