Abstract
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.
| Original language | English |
|---|---|
| Journal | Physical Review Letters |
| Volume | 96 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2006 |
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ASJC Scopus subject areas
- Physics and Astronomy(all)
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Four-qubit device with mixed couplings. / Grajcar, M.; Izmalkov, A.; Van Der Ploeg, S. H W; Linzen, S.; Plecenik, T.; Wagner, Th; Hübner, U.; Il'ichev, E.; Meyer, H. G.; Smirnov, A. Yu; Love, Peter J.; Maassen Van Den Brink, Alec; Amin, M. H S; Uchaikin, S.; Zagoskin, A. M.
In: Physical Review Letters, Vol. 96, No. 4, 2006.Research output: Contribution to journal › Article
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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.
UR - http://www.scopus.com/inward/record.url?scp=33144477417&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33144477417&partnerID=8YFLogxK
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 -