TY - JOUR
T1 - Four-qubit device with mixed couplings
AU - Grajcar, M.
AU - Izmalkov, A.
AU - Van Der Ploeg, S. H W
AU - Linzen, S.
AU - Plecenik, T.
AU - Wagner, Th
AU - Hübner, U.
AU - Il'ichev, E.
AU - Meyer, H. G.
AU - Smirnov, A. Yu
AU - Love, Peter J.
AU - Maassen Van Den Brink, Alec
AU - Amin, M. H S
AU - Uchaikin, S.
AU - Zagoskin, A. M.
PY - 2006
Y1 - 2006
N2 - We present the first experimental results on a device with more than two superconducting qubits. The circuit consists of four three-junction flux qubits, with simultaneous ferro- and antiferromagnetic coupling implemented using shared Josephson junctions. Its response, which is dominated by the ground state, is characterized using low-frequency impedance measurement with a superconducting tank circuit coupled to the qubits. The results are found to be in excellent agreement with the quantum-mechanical predictions.
AB - We present the first experimental results on a device with more than two superconducting qubits. The circuit consists of four three-junction flux qubits, with simultaneous ferro- and antiferromagnetic coupling implemented using shared Josephson junctions. Its response, which is dominated by the ground state, is characterized using low-frequency impedance measurement with a superconducting tank circuit coupled to the qubits. The results are found to be in excellent agreement with the quantum-mechanical predictions.
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U2 - 10.1103/PhysRevLett.96.047006
DO - 10.1103/PhysRevLett.96.047006
M3 - Article
AN - SCOPUS:33144477417
VL - 96
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 4
ER -