Flexible Multi Qubit Gate
ORAL
Abstract
Superconducting qubits provide a versatile platform for realizing complex quantum computation through precise control of microwave interactions. In this work, we aim to implement flexible two-qubit gates based on the coherent controlization protocol proposed by Friis et al.,Sci Rep 5, 18036 (2015).
Our experimental setup consists of two transmon qubits dispersively coupled to a high-coherence aluminum cavity, which serves both as a quantum bus and as a conditional control element. The cavity enables coherent conditioning of unknown unitaries by combining cavity displacements with qubit operations conditioned on its photon state, implementing coherent controlization that allows efficient manipulation of multiple unitaries with a single operation.
Current efforts focus on integrating and calibrating the two-qubit–cavity system, characterizing coherence properties, and developing control sequences for conditional operations. This work establishes a platform for exploring coherent control of multi-qubit operations in a high-coherence cavity, with potential applications in quantum machine learning and error mitigation.
Our experimental setup consists of two transmon qubits dispersively coupled to a high-coherence aluminum cavity, which serves both as a quantum bus and as a conditional control element. The cavity enables coherent conditioning of unknown unitaries by combining cavity displacements with qubit operations conditioned on its photon state, implementing coherent controlization that allows efficient manipulation of multiple unitaries with a single operation.
Current efforts focus on integrating and calibrating the two-qubit–cavity system, characterizing coherence properties, and developing control sequences for conditional operations. This work establishes a platform for exploring coherent control of multi-qubit operations in a high-coherence cavity, with potential applications in quantum machine learning and error mitigation.
*University of Innsbruck, SFB Beyond C
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Presenters
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Lucien Québaud
- University of Innsbruck