Complete Readout of Two-Electron Spin States in a Double Quantum Dot

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Abstract

We propose and demonstrate complete spin state readout of a two-electron system in a double quantum dot probed by an electrometer. The protocol is based on repetitive single-shot measurements using Pauli spin blockade and our ability to tune on fast timescales the detuning and the interdot tunnel coupling between the GHz and sub-Hz regime. A sequence of three distinct manipulations and measurements allows establishing if the spins are in S, T0, T+, or T- state. This work points at a procedure to reduce the overhead for spin readout, an important challenge for scaling up spin-qubit platforms.

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CITATION STYLE

APA

Nurizzo, M., Jadot, B., Mortemousque, P. A., Thiney, V., Chanrion, E., Niegemann, D., … Meunier, T. (2023). Complete Readout of Two-Electron Spin States in a Double Quantum Dot. PRX Quantum, 4(1). https://doi.org/10.1103/PRXQuantum.4.010329

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