Transition between Quantum States in a Parallel-Coupled Double Quantum Dot
Publication
, Journal Article
Chang, AM
Published in: Physical Review Letters
April 2004
Strong electron and spin correlations in a double quantum dot (DQD) can give rise to different quantum states.We observe a continuous transition from a Kondo state exhibiting a single-peak Kondo resonance to another exhibiting a double peak by increasing the interdot coupling (t) in a parallel-coupled DQD. The transition into the double-peak state provides evidence for spin entanglement between the excess electrons on each dot. Toward the transition, the peak splitting merges and becomes substantially smaller than t because of strong Coulomb effects. Our device tunability bodes well for future quantum computation applications.
Duke Scholars
Published In
Physical Review Letters
Publication Date
April 2004
Volume
92
Issue
17
Start / End Page
176801
Related Subject Headings
- General Physics
- 51 Physical sciences
- 49 Mathematical sciences
- 40 Engineering
- 09 Engineering
- 02 Physical Sciences
- 01 Mathematical Sciences
Citation
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Chang, A. M. (2004). Transition between Quantum States in a Parallel-Coupled Double Quantum Dot. Physical Review Letters, 92(17), 176801.
Chang, A. M. “Transition between Quantum States in a Parallel-Coupled Double Quantum Dot.” Physical Review Letters 92, no. 17 (April 2004): 176801.
Chang AM. Transition between Quantum States in a Parallel-Coupled Double Quantum Dot. Physical Review Letters. 2004 Apr;92(17):176801.
Chang, A. M. “Transition between Quantum States in a Parallel-Coupled Double Quantum Dot.” Physical Review Letters, vol. 92, no. 17, Apr. 2004, p. 176801.
Chang AM. Transition between Quantum States in a Parallel-Coupled Double Quantum Dot. Physical Review Letters. 2004 Apr;92(17):176801.
Published In
Physical Review Letters
Publication Date
April 2004
Volume
92
Issue
17
Start / End Page
176801
Related Subject Headings
- General Physics
- 51 Physical sciences
- 49 Mathematical sciences
- 40 Engineering
- 09 Engineering
- 02 Physical Sciences
- 01 Mathematical Sciences