Twisted light enables optical write, read, and scalable addressing of symmetry-protected correlation sectors in quantum dots via OAM selection rules, with closed-form gate parameters in the Calogero interaction limit.
Quantum Coherence in a One-Electron Semiconductor Charge Qubit
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abstract
We study quantum coherence in a semiconductor charge qubit formed from a GaAs double quantum dot containing a single electron. Voltage pulses are applied to depletion gates to drive qubit rotations and non-invasive state readout is achieved using a quantum point contact charge detector. We measure a maximum coherence time of ~7 ns at the charge degeneracy point, where the qubit level splitting is first-order-insensitive to gate voltage fluctuations. We compare measurements of the coherence time as a function of detuning with predictions from a 1/f noise model.
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cond-mat.mes-hall 1years
2026 1verdicts
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Twisted light generates robust many-body states for practical quantum computing
Twisted light enables optical write, read, and scalable addressing of symmetry-protected correlation sectors in quantum dots via OAM selection rules, with closed-form gate parameters in the Calogero interaction limit.