Landau-Zener problem for energies close to potential crossing points
نویسندگان
چکیده
منابع مشابه
Investigation of Temperature Effect in Landau-Zener Avoided Crossing
Considering a temperature dependent two-level quantum system, we have numerically solved the Landau-Zener transition problem. The method includes the incorporation of temperature effect as a thermal noise added Schrödinger equation for the construction of the Hamiltonian. Here, the obtained results which describe the changes in the system including the quantum states and the transition pro...
متن کاملDuality in Landau-Zener-Stueckelberg potential curve crossing
It is pointed out that there exists an interesting strong and weak duality in the Landau-Zener-Stueckelberg potential curve crossing. A reliable perturbation theory can thus be formulated in the both limits of weak and strong interactions. It is shown that main characteristics of the potential crossing phenomena such as the LandauZener formula including its numerical coefficient are well-descri...
متن کاملInverse problem for the Landau - Zener effect
– We consider the inverse Landau-Zener problem which consists in finding the energy-sweep functions W (t) ≡ ε1(t) − ε2(t) resulting in the required time dependences of the level populations for a two-level system crossing the resonance one or more times during the sweep. We find sweep functions of particular forms that let manipulate the system in a required way, including complete switching fr...
متن کاملinvestigation of temperature effect in landau-zener avoided crossing
considering a temperature dependent two-level quantum system, we have numerically solved the landau-zener transition problem. the method includes the incorporation of temperature effect as a thermal noise added schrödinger equation for the construction of the hamiltonian. here, the obtained results which describe the changes in the system including the quantum states and the transition probabil...
متن کاملInverse Landau-Zener-Stückelberg problem for qubit-resonator systems
We consider theoretically a superconducting qubit–nanomechanical resonator (NR) system, which was realized by LaHaye et al. [Nature (London) 459, 960 (2009)]. First, we study the problem where the state of the strongly driven qubit is probed through a frequency shift of the low-frequency NR. In the case where the coupling is capacitive, the measured quantity can be related to the so-called quan...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Experimental and Theoretical Physics Letters
سال: 2004
ISSN: 0021-3640,1090-6487
DOI: 10.1134/1.1830664