spin environmentWe study the effect of an environment consisting of noninteracting two level systems on Landau-Zener transitions with an interest on the performance of an adiabatic quantum computer. We show that if the environment is initially at zero temperature, it does not affect the transition ...
We study Landau-Zener transitions in a dissipative environment by means of the numerically exact quasiadiabatic propagator path integral. It allows to cover the full range of the involved parameters. We discover a nonmonotonic dependence of the transition probability on the sweep velocity which is ex...
Landau–Zener–Stückelberg–Majorana (LZSM) transitions occur between quantum states when parameters in the system’s Hamiltonian are varied continuously and rapidly. In magnetic resonance, losses in adiabatic rapid passage can be understood using the physics of LZSM transitions. Most treatments of LZSM...
Shevchenko S.N., Kiyko A.S., Omelyanchouk A., Krech W.: Dynamic behaviour of Josephson-junction qubits: crossover between Rabi oscillations and Landau-Zener transitions. Low Temp. Phys. 31 , 569 (2005) cond-mat/0412588 ADSS.N. Shevchenko,A.S. Kiyko,A. Omelyanchouk,W. Krech....
We study Landau-Zener transitions in a qubit coupled to a bath at zero temperature. A general formula is derived that is applicable to models with a non-degenerate ground state. We calculate exact transition probabilities for a qubit coupled to either a bosonic or a spin bath. The nature of...
OPEN SUBJECT AREAS: QUBITS QUANTUM INFORMATION Observation of coherent oscillation in single-passage Landau-Zener transitions Guozhu Sun1,2,3*, Xueda Wen4*, Ming Gong3,5, Dan-Wei Zhang5, Yang Yu2,5, Shi-Liang Zhu5, Jian Chen1, Peiheng Wu1,2 & Siyuan Han3 Received 18 November 2014 ...
We study Landau–Zener transitions in a dissipative environment by means of the quasiadiabatic propagator path-integral scheme. It allows to obtain numerically exact results for the full range of the involved parameters. We discover a non-monotonic dependence of the Landau–Zener transition probability...
Chen, Tunable landau-zener transitions in a spin-orbit-coupled bose-einstein condensate. Phys. Rev. A 90, 013616 (2014) Article ADS Google Scholar C. Hamner, Q. Chunlei, Y. Zhang, J. Chang, M. Gong, C. Zhang, P. Engels, Dicke-type phase transition in a spin-orbit-coupled bose-...
nuclear state preparation via landau-zener-stü ckelberg transitions in double quantum dots Nuclear state preparation via Landau-Zener- Stueckelberg transitions in double quantum dots. Phys. Rev. Lett., 102:216802, 2009.H. Ribeiro, G. Burkard, Phys. Rev. Lett. 102 , 216802 (2009)... H Ri...
Therefore, the lines represent the constructive interference fringes between the successive Landau–Zener transitions that correspond to an accumulated total phase of 2πN. To confirm our identification, we have derived an analytical expression for the locations, ε0(N), of the constructive ...