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Wen-Te Liao@ Magurele 11. 03. 2011 Nuclear Coherent Population Transfer with X-Ray Laser Pulses
11. 03. 2011. @ Bucharest-Magurele
1
Nuclear Coherent Population Transfer with X-Ray Laser Pulses
~One Step towards Nuclear Quantum Optics
Max Planck Institute for Nuclear Physics, Germany
Wen-Te Liao+
+
++
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Supervised by
Dr. Adriana PálffyProf. Dr. Christoph H. Keitel
Wen-Te Liao@ Magurele 11. 03. 2011 Nuclear Coherent Population Transfer with X-Ray Laser Pulses 2
Motivation-Control the nuclear state
3
1
2
isomer state96.57 keV
triggering level656.90 keV
324.47 keV
97 Tc
Nuclear Coherent Population Transfer (NCPT)
Stokespump
isomer
triggering
Wen-Te Liao@ Magurele 11. 03. 2011 Nuclear Coherent Population Transfer with X-Ray Laser Pulses 3
Motivation-Nuclear Battery
K. W. D. Ledingham, P. McKenna, and R. P. Singhal,Science 300, 1107 (2003)
Stokes
pump isomer state
ground state
Store very large
quantities of energy
Wen-Te Liao@ Magurele 11. 03. 2011 Nuclear Coherent Population Transfer with X-Ray Laser Pulses 4
Drive MeV transition with 10keV photon
XFEL
Photon energy ~10 keV
Nuclear states
0
~10 keV
~100 keV
> MeV
T. Tajima, Report on the ELI Science, p.14 (2009).T. J. Bürvenich, J. Evers and C. H. Keitel, PRL 96, 142501 (2006).
Blue shift
Accelerated
Nuclei !!
γ
Wen-Te Liao@ Magurele 11. 03. 2011 Nuclear Coherent Population Transfer with X-Ray Laser Pulses 5
Ion accelerator and XFEL are NOT put together now
Wen-Te Liao@ Magurele 11. 03. 2011 Nuclear Coherent Population Transfer with X-Ray Laser Pulses 6
ELI will put compact ion-accelerators and Table-Top-XFELs together
T T-XFEL
M. Fuchs et al., Nature Phys. 5, 826 (2009).compact ion-accelerator
M. Dunne, Science 312, 374 (2006)
NCPT
Wen-Te Liao@ Magurele 11. 03. 2011 Nuclear Coherent Population Transfer with X-Ray Laser Pulses 7
STIRAP
3
1
2
StokesPump
pS
delay
K. Bergmann, H. Theuer and B. W. Shore, RMP. 70, 1003 (1998).
p S
p S
stimulated Raman adiabatic passage (STIRAP)
Wen-Te Liao@ Magurele 11. 03. 2011 Nuclear Coherent Population Transfer with X-Ray Laser Pulses 8
XFEL
Temporal coherence is low.Coherence time ~ 0.2 fs
The Technical Design Report of the European XFEL
Wen-Te Liao@ Magurele 11. 03. 2011 Nuclear Coherent Population Transfer with X-Ray Laser Pulses 9
Seeded XFEL (SXFEL)
E. L. Saldin et al., Nucl. Instrum. Meth. A 475, 357 (2001).
transversely and temporarily coherent
Wen-Te Liao@ Magurele 11. 03. 2011 Nuclear Coherent Population Transfer with X-Ray Laser Pulses 10
XFEL Oscillator (X-FELO)
K.-J. Kim, Y. Shvyd’ko and S. Reiche, PRL 100, 244802 (2008).Y. V. Shvyd’ko et al., Nature Phys. 6, 196 (2010)
transversely and temporarily coherent
Diamond
DiamondReflectivity ~ 100%
Wen-Te Liao@ Magurele 11. 03. 2011 Nuclear Coherent Population Transfer with X-Ray Laser Pulses 11
Two Schemes
Nuclear beam
SP
Nuclear beam
S
PCross One Color Scheme
Central frequency ofP and S are the same.
Parallel Two Color Scheme
Central frequency ofP and S are different.
1 P
1 PCos
1 P
1 S
γ
γ
W.-T. Liao, A. Pálffy, C. H. Keitel, arXiv:1011.4423v1.
Wen-Te Liao@ Magurele 11. 03. 2011 Nuclear Coherent Population Transfer with X-Ray Laser Pulses 12
Results for One-Color Scheme
p p
S S
I I
I I
Increased 22
W.-T. Liao, A. Pálffy, C. H. Keitel, arXiv:1011.4423v1.
Fully coherent XFEL:Photon energy = 25 keVBandwidth = 2 meV
5 < γ < 36
Wen-Te Liao@ Magurele 11. 03. 2011 Nuclear Coherent Population Transfer with X-Ray Laser Pulses 13
Conclusion
NCPT can be observed with laser peak intensity > . 18 210 /W cm
ELI-NP provide very unique stage for NCPT.
W.-T. Liao, A. Pálffy, C. H. Keitel, arXiv:1011.4423v1.
1.
2.
Wen-Te Liao@ Magurele 11. 03. 2011 Nuclear Coherent Population Transfer with X-Ray Laser Pulses 14
Acknowledgement
Dr. Adriana Pálffy
Prof. Dr. Christoph H. Keitel
Wen-Te Liao@ Magurele 11. 03. 2011 Nuclear Coherent Population Transfer with X-Ray Laser Pulses 15
Thanks for your attention