Electric field effects in single semiconductor quantum dots observed by scanning tunneling luminescence

2003 ◽  
Vol 21 (6) ◽  
pp. 2344 ◽  
Author(s):  
U. Håkanson ◽  
H. Håkanson ◽  
M. K.-J. Johansson ◽  
L. Samuelson ◽  
M.-E. Pistol
Keyword(s):  
Quantum Dots ◽  
Electric Field ◽  
Semiconductor Quantum Dots ◽  
Scanning Tunneling ◽  
Electric Field Effects ◽  
Field Effects ◽  
Tunneling Luminescence

Electric-field effects on excitons in quantum dots

1998 ◽  
Vol 57 (11) ◽  
pp. 6270-6273 ◽  
Author(s):  
W. Heller ◽  
U. Bockelmann ◽  
G. Abstreiter
Keyword(s):  
Quantum Dots ◽  
Electric Field ◽  
Electric Field Effects ◽  
Field Effects

ELECTRIC FIELD EFFECTS ON QUANTUM CORRELATIONS IN THREE COUPLED SEMICONDUCTOR QUANTUM DOTS

2013 ◽  
Vol 11 (01) ◽  
pp. 1350009 ◽  
Author(s):  
S. SHOJAEI ◽  
M. MAHDIAN ◽  
R. YOUSEFJANI
Keyword(s):  
Quantum Dots ◽  
Theoretical Model ◽  
Lower Bound ◽  
Electric Field ◽  
Quantum Discord ◽  
Quantum Correlations ◽  
Semiconductor Quantum Dots ◽  
Electric Field Effects ◽  
Different Temperatures ◽  
Coupled Semiconductor

We study the effect of external electric bias on the quantum correlations in the array of optically excited three coupled semiconductor quantum dots. The correlations are characterized by the quantum discord and concurrence and are observed using excitonic qubits. We employ the lower bound of concurrence for thermal density matrix at different temperatures. The effect of the Förster interaction on correlations will be studied. Our theoretical model detects nonvanishing quantum discord when the electric field is on while concurrence dies, ensuring the existence of nonclassical correlations as measured by the quantum discord.

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