This paper demonstrates that the quantum Zeno effect can be used to create an entangling gate between two non-interacting qubits. By applying rapid projective measurements, a single-qubit operation is transformed into a two-qubit entangling gate, even in the absence of direct qubit-qubit interaction. This is experimentally demonstrated using transmon qubits, where resonator-induced interactions are actively canceled. The gate works by imparting a geometric phase conditioned on the system's state within a specific non-local subspace.
Publisher
npj Quantum Information
Published On
Jul 25, 2022
Authors
E. Blumenthal, C. Mor, A. A. Diringer, L. S. Martin, P. Lewalle, D. Burgarth, K. B. Whaley, S. Hacohen-Gourgy
Tags
quantum Zeno effect
entangling gate
non-interacting qubits
transmon qubits
geometric phase
projective measurements
quantum control
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