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Quantum two level systems and kondo-like traps as possible sources of decoherence in superconducting qubits
- Source :
- Physical review letters. 96(4)
- Publication Year :
- 2005
-
Abstract
- We discuss the origin of decoherence in Josephson junction qubits. We find that two level systems in the surrounding insulator cannot be the dominant source of noise in small qubits. We argue that electron traps in the Josephson barrier with large Coulomb repulsion would give noise that agrees both in magnitude and in temperature dependence with experimental data.<br />Comment: 4 pages, no figures
- Subjects :
- Josephson effect
Quantum decoherence
FOS: Physical sciences
General Physics and Astronomy
02 engineering and technology
01 natural sciences
Pi Josephson junction
Condensed Matter::Superconductivity
Quantum mechanics
Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
0103 physical sciences
010306 general physics
Quantum
Condensed Matter::Quantum Gases
Physics
Superconductivity
Quantum Physics
Condensed Matter - Mesoscale and Nanoscale Physics
Condensed matter physics
Condensed Matter::Mesoscopic Systems and Quantum Hall Effect
021001 nanoscience & nanotechnology
Qubit
Superconducting tunnel junction
Quantum Physics (quant-ph)
0210 nano-technology
Superconducting quantum computing
Subjects
Details
- ISSN :
- 00319007
- Volume :
- 96
- Issue :
- 4
- Database :
- OpenAIRE
- Journal :
- Physical review letters
- Accession number :
- edsair.doi.dedup.....13f0221daeb6e32b540bde1530097c8c