Spin polarization in the relaxed excited state of the F center in case of saturated optical pumping

1978 ◽  
Vol 27 (10) ◽  
pp. 1009-1011 ◽  
Author(s):  
K. Imanaka ◽  
T. Wada ◽  
T. Iida ◽  
H. Ohkura
Keyword(s):  
Excited State ◽  
Spin Polarization ◽  
Optical Pumping ◽  
F Center

On the optimality of optical pumping for a closed Λ-system with large decay rates of the intermediate excited state

2021 ◽  
Author(s):  
Dionisis Stefanatos ◽  
Emmanuel Paspalakis
Keyword(s):  
Optimal Control ◽  
Excited State ◽  
Decay Rate ◽  
Optimal Control Theory ◽  
Optical Pumping ◽  
Quantum Information Processing ◽  
Decay Rates ◽  
Population Transfer ◽  
Initial State ◽  
Weakly Coupled

Abstract We use optimal control theory to show that for a closed Λ-system where the excited intermediate level decays to the lower levels with a common large rate, the optimal scheme for population transfer between the lower levels is actually optical pumping. In order to obtain this result we exploit the large decay rate to eliminate adiabatically the weakly coupled excited state, then perform a transformation to the basis comprised of the dark and bright states, and finally apply optimal control to this transformed system. Subsequently, we confirm the optimality of the optical pumping scheme for the original closed Λ-system using numerical optimal control. We also demonstrate numerically that optical pumping remains optimal when the decay rate to the target state is larger than that to the initial state or the two rates are not very different from each other. The present work is expected to find application in various tasks of quantum information processing, where such systems are encountered

The spin-lattice relaxation and spin-orbit interaction of F center in the relaxed excited state

1983 ◽  
Vol 72 (1-4) ◽  
pp. 171-175 ◽  
Author(s):  
H. Ohkura ◽  
K. Iwahana ◽  
K. Tara ◽  
M. Hirata ◽  
Y. Mori
Keyword(s):  
Excited State ◽  
Lattice Relaxation ◽  
Orbit Interaction ◽  
Spin Lattice Relaxation ◽  
Spin Orbit ◽  
Spin Orbit Interaction ◽  
Spin Lattice ◽  
F Center

Effective collinear optical pumping for nuclear spin polarization

2014 ◽  
Vol 31 (10) ◽  
pp. 2278 ◽  
Author(s):  
Sung Jong Park ◽  
Taeksu Shin ◽  
Ju Hahn Lee ◽  
Gi Dong Kim ◽  
Yong Kyun Kim
Keyword(s):  
Spin Polarization ◽  
Nuclear Spin ◽  
Optical Pumping ◽  
Nuclear Spin Polarization

Spin-Polarization by Optical Pumping with Selective Reflection

1993 ◽  
Vol 62 (6) ◽  
pp. 1951-1963 ◽  
Author(s):  
Haruhiko Ito ◽  
Takahisa Mitsui ◽  
Katsuyuki Kobayashi ◽  
Tsutomu Yabuzaki ◽  
Taro Ito
Keyword(s):  
Spin Polarization ◽  
Optical Pumping ◽  
Selective Reflection

Excited State Magnetic Exchange Interactions Enable Large Spin Polarization Effects

2018 ◽  
Vol 140 (6) ◽  
pp. 2221-2228 ◽  
Author(s):  
Benjamin W. Stein ◽  
Christopher R. Tichnell ◽  
Ju Chen ◽  
David A. Shultz ◽  
Martin L. Kirk
Keyword(s):  
Excited State ◽  
Spin Polarization ◽  
Exchange Interactions ◽  
Magnetic Exchange ◽  
Polarization Effects ◽  
Spin Polarization Effects ◽  
Large Spin

Vibronic Theory of the Stark Effects on the Relaxed Excited State of the F Center

1977 ◽  
Vol 43 (2) ◽  
pp. 519-528 ◽  
Author(s):  
Koichi Imanaka ◽  
Takeshi Iida ◽  
Hiroshi Ohkura
Keyword(s):  
Excited State ◽  
Stark Effects ◽  
F Center

Vibronic Scheme of the Relaxed Excited State of the F Center

1979 ◽  
Vol 47 (2) ◽  
pp. 599-607 ◽  
Author(s):  
Kiyokazu Iwahana ◽  
Takeshi Iida ◽  
Hiroshi Ohkura
Keyword(s):  
Excited State ◽  
F Center
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