Nuclear-state engineering in tripod systems using x-ray laser pulses

Akbari, Hossein; Saadati-Niari, M.; Zolfagharpour, Farhad

doi:10.1103/physrevc.96.044619

Cited by 15 publications

(11 citation statements)

References 42 publications

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“…By placing equation (27) in equation ( 26) and calculating the effective laser intensity in the kth stage, the laboratory intensity can be calculated in each step.…”

Section: Coincident Pulses Technique In the Nuclear Multi-lambda Systemsmentioning

confidence: 99%

“…Bürvenich et al [22] have studied the interaction of XFEL with two-level nuclear systems theoretically, where, in their proposed method, the gap between the x-ray laser frequency and the nuclear transition frequency has been compensated by an accelerating nuclear beam. For the three-level nuclear systems [23][24][25][26] and tripod systems [27], the proposed method in [22] has been studied by using STIRAP [28][29][30][31][32][33][34], coincident pulses [35], and composite STIRAP [36,37] techniques in detail. An essential advantage of the STIRAP technique is that the excited state is not populated during time evolution.…”

Section: Introductionmentioning

confidence: 99%

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Superposition of nuclear states in multi-lambda systems using x-ray laser pulses

Mansourzadeh-Ashkani¹,

Saadati-Niari²,

Zolfagharpour³

et al. 2021

J. Phys. G: Nucl. Part. Phys.

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Nuclear-state population transfer in the multi-lambda systems with N = 5 that interact with four x-ray laser pulses are investigated theoretically. By using the coincident pulses and stimulated Raman adiabatic passage (STIRAP) techniques, the population transfer from one initially populated ground state to an arbitrary coherent superposition of other ground states. Since the frequency of currently available x-ray lasers is lower than the gamma rays, in this method, x-ray laser pulses with different frequencies are interacting with the accelerated nuclei. We employ the Morris-Shore transformation to reduce the five-states system to two separate three-state and two-state linkage. The required laser intensities were calculated, which satisfy the conditions of coincident pulses and multi-lambda STIRAP techniques. Considering the spontaneous emission from excited states, the master equation has to be used for numerical study, and it is shown that an arbitrary superposition of final ground states can be obtained. Also, it is observed that by increasing the number of coincident pulses, the population of ground states gets closer to the ideal situation.

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“…By placing equation (27) in equation ( 26) and calculating the effective laser intensity in the kth stage, the laboratory intensity can be calculated in each step.…”

Section: Coincident Pulses Technique In the Nuclear Multi-lambda Systemsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Superposition of nuclear states in multi-lambda systems using x-ray laser pulses

Mansourzadeh-Ashkani¹,

Saadati-Niari²,

Zolfagharpour³

et al. 2021

J. Phys. G: Nucl. Part. Phys.

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“…The crossedbeam setup can use the same XFEL frequency for both P and S pulses, however, at the cost of a more complicated beam geometry. The three-beam setup STIRAP studies [182,184] were followed by more detailed works on nuclear STIRAP by a train of coincident pulses [185] and nuclear-state engineering in tripod systems using x-ray laser pulses [186].…”

Section: B33 Application Of Stirap For Polarizing Angularmomentum Statesmentioning

confidence: 99%

Roadmap on STIRAP applications

Бергманн

Nägerl

Panda

et al. 2019

J. Phys. B: At. Mol. Opt. Phys.

152

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STIRAP (Stimulated Raman Adiabatic Passage) is a powerful laser-based method, usually involving two photons, for efficient and selective transfer of population between quantum states. A particularly interesting feature is the fact that the coupling between the initial and the final quantum states is via an intermediate state even though the lifetime of the latter can be much shorter than the interaction time with the laser radiation. Nevertheless, spontaneous emission from the intermediate state is prevented by quantum interference. Maintaining the coherence between the initial and final state throughout the transfer process is crucial.STIRAP was initially developed with applications in chemical dynamics in mind. That is why the original paper of 1990 was published in The Journal of Chemical Physics. However, as of about the year 2000, the unique capabilities of STIRAP and its robustness with respect to small variations of some experimental parameters stimulated many researchers to apply the scheme in a variety of other fields of physics. The successes of these efforts are documented in this collection of articles. In Part A the experimental success of STIRAP in manipulating or controlling molecules, photons, ions or even quantum systems in a solid-state environment is documented. After a brief introduction to the basic physics of STIRAP, the central role of the method in the formation of ultra-cold molecules is discussed, followed by a presentation of how precision experiments (measurement of the upper limit of the electric dipole moment of the electron or detecting the consequences of parity violation in chiral molecules) or chemical dynamics studies at ultra-low temperatures benefit from STIRAP. Next comes the STIRAP-based control of photons in cavities followed by a group of three contributions which highlight the potential of the STIRAP concept in classical physics by presenting data on the transfer of waves (photonic, magnonic and phononic) between respective wave guides. The works on ions or ion-strings discuss options for applications e.g. in quantum information. Finally, the success of STIRAP in the controlled manipulation of quantum states in solid-state systems, which are usually hostile towards coherent processes, is presented, dealing with data storage in rare-earth ion doped crystals and in NV-centers or even in superconducting quantum circuits. The works on ions and those involving solid-state systems emphasize the relevance of the results for quantum information protocols.Part B deals with theoretical work including further concepts relevant for quantum information or invoking STIRAP for the manipulation of matter waves. The subsequent articles discuss experiments underway to demonstrate the potential of STIRAP for populating otherwise inaccessible high-lying Rydberg states of molecules, or controlling and cooling the translational motion of particles in a molecular beam or the polarization of angular momentum states. The series of articles concludes with a more speculative application of STIRAP i...

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“…Provided sufficient xray intensity, these transfer schemes allow to place the entire population from the ground state into the isomeric state in a coherent and controlled manner. Prior theoretical studies have discussed the possibility of nuclear STIRAP in the context of high-energy gamma-ray transitions [23][24][25][26]. The peculiarities of the investigated 229 Th three-level system are that the two transitions to the upper state have low energy and narrow resonances, are almost degenerate in energy and have dominating internal conversion decay channels, with non-negligible multipole mixing.…”

Section: Introductionmentioning

confidence: 99%

Nuclear coherent population transfer to the $^{229m}$Th isomer using x-ray pulses

Kirschbaum,

Minkov,

Pálffy

2022

Preprint

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Population of the 8 eV 229m Th isomer via the second nuclear excited state at 29.19 keV by means of coherent x-ray pulses is investigated theoretically. We focus on two nuclear coherent population transfer schemes using partially overlapping x-ray pulses known from quantum optics: stimulated Raman adiabatic passage (STIRAP), and successive π pulses. Numerical results are presented for three possible experimental setups. Our results identify the Gamma Factory as the most promising scenario, where two ultraviolet pulses combined with relativistically accelerated ions deliver the required intensities for efficient isomer population. Our simulations require knowledge of the inband and cross-band nuclear transition probabilities. We give theoretically predicted values for the latter and discuss them in the context of recent experiments.

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Nuclear-state engineering in tripod systems using x-ray laser pulses

Cited by 15 publications

References 42 publications

Superposition of nuclear states in multi-lambda systems using x-ray laser pulses

Superposition of nuclear states in multi-lambda systems using x-ray laser pulses

Roadmap on STIRAP applications

Nuclear coherent population transfer to the $^{229m}$Th isomer using x-ray pulses

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