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Electrically-protected resonant exchange qubits in triple quantum dots



Jacob M. Taylor, Vanita Srinivasa, Medford Jim


We present a modulated microwave approach for quantum computing with qubits comprising three spins in a triple quantum dot. This approach includes single- and two-qubit gates that are protected against low-frequency electrical noise, due to an operating point with a narrowband response to high frequency electric fields. Furthermore, existing double quantum dot advances, including robust preparation and measurement via spin-to-charge conversion, are immediately applicable to the new qubit. Finally, the electric dipole terms implicit in the high frequency coupling enable strong coupling with superconducting microwave resonators, leading to more robust two-qubit gates.
Physical Review Letters


quantum dots, quantum computing, spintronics


Taylor, J. , Srinivasa, V. and Jim, M. (2013), Electrically-protected resonant exchange qubits in triple quantum dots, Physical Review Letters, [online], (Accessed May 21, 2024)


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Created July 31, 2013, Updated November 10, 2018