Logic Operations of Charge Qubit in a Triple Quantum Dot
K. Ptaszyńskia,b and B.R. Bułka a
aInstitute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, 60-179 Poznań, Poland
bFaculty of Technical Physics, Poznań University of Technology, Piotrowo 3, 60-695 Poznań, Poland
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Studies for a single charge qubit and two capacitively coupled qubits built on triple quantum dots are presented. We show feasibility of implementing two-qubit gate operations, e.g. the CPHASE gate can be implemented with the fidelity higher than 99% for strong couplings.

DOI: 10.12693/APhysPolA.129.A-30
PACS numbers: 73.21.La, 03.67.Lx