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• Sensitivity of entanglement decay of quantum-dot spin qubits to the external magnetic field

  Publikacja

  • P. Mazurek
  • K. Roszak
  • R. W. Chhajlany
  • P. Horodecki

  - PHYSICAL REVIEW A - Rok 2014

  We study the decay of entanglement of quantum-dot electron-spin qubits under hyperfine-interaction-mediated decoherence.We show that two-qubit entanglement of a single entangled initial state may exhibit decay characteristic of two disentanglement regimes in a single sample, when the externalmagnetic field is changed. The transition is manifested by the suppression of time-dependent entanglement oscillations which are superimposed...

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