Transcript 投影片 1 - ELI-NP | Extreme Light Infrastructure

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