Theoretical study on quantum control of photodissociation and photodesorption dynamics by femtosecond chirped laser pulses

1999 ◽  
Vol 110 (16) ◽  
pp. 7756-7769 ◽  
Author(s):  
Kenji Mishima ◽  
Koichi Yamashita
Keyword(s):  
Quantum Control ◽  
Theoretical Study ◽  
Laser Pulses

scholarly journals Quantum control of excitons for reversible heat transfer

2019 ◽  
Vol 2 (1) ◽  
Author(s):  
Conor N. Murphy ◽  
Paul R. Eastham
Keyword(s):  
Heat Transfer ◽  
Quantum Dot ◽  
Quantum Control ◽  
Heat Engine ◽  
Laser Pulses ◽  
Heat Current ◽  
Light Emitting ◽  
Laser Dressing ◽  
Working Medium ◽  
Heat Transfers

Abstract Lasers, photovoltaics, and thermoelectrically-pumped light emitting diodes are thermodynamic machines which use excitons (electron-hole pairs) as the working medium. The heat transfers in such devices are highly irreversible, leading to low efficiencies. Here we predict that reversible heat transfers between a quantum-dot exciton and its phonon environment can be induced by laser pulses. We calculate the heat transfer when a quantum-dot exciton is driven by a chirped laser pulse. The reversibility of this heat transfer is quantified by the efficiency of a heat engine in which it forms the hot stroke, which we predict to reach 95% of the Carnot limit. This performance is achieved by using the time-dependent laser-dressing of the exciton to control the heat current and exciton temperature. We conclude that reversible heat transfers can be achieved in excitonic thermal machines, allowing substantial improvements in their efficiency.

Quantum control of electron-proton symmetry breaking in dissociative ionization of H2by intense laser pulses

2014 ◽  
Vol 115 (6) ◽  
pp. 369-380 ◽  
Author(s):  
Mohammad Noh Daud ◽  
Huizhong Lu ◽  
Szczepan Chelkowski ◽  
Andre D. Bandrauk
Keyword(s):  
Symmetry Breaking ◽  
Quantum Control ◽  
Laser Pulses ◽  
Dissociative Ionization ◽  
Intense Laser ◽  
Intense Laser Pulses

Theoretical study on photon emission statistics from single conjugated polymer molecules excited by laser pulses

2009 ◽  
Vol 159 (9-10) ◽  
pp. 769-772
Author(s):  
Kazuhiko Seki ◽  
Sadahiro Masuo ◽  
Shuji Abe ◽  
M. Tachiya
Keyword(s):  
Conjugated Polymer ◽  
Theoretical Study ◽  
Photon Emission ◽  
Laser Pulses ◽  
Polymer Molecules

Experimental and theoretical study of Al plasma under femtosecond laser pulses

2009 ◽  
Vol 42 (21) ◽  
pp. 214057 ◽  
Author(s):  
P S Komarov ◽  
S I Ashitkov ◽  
A V Ovchinnikov ◽  
D S Sitnikov ◽  
M E Veysman ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Theoretical Study ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses
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