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Publications Influence

Landau–Zener transitions in qubits controlled by electromagnetic fields

- M. Wubs, K. Saito, S. Kohler, Y. Kayanuma, P. Hānggi
- Physics
- 5 August 2005

We investigate the influence of a dipole interaction with a classical radiation field on a qubit during a continuous change of a control parameter. In particular, we explore the non-adiabatic… Expand

34 2- PDF

Lattice relaxation in Auger decay-free core luminescence

- Y. Kayanuma, A. Kotani
- Chemistry
- 1 May 1996

Abstract A simple two-band model is proposed to analyze the emission spectra of the Auger decay-free core luminescence. The initial state is assumed as being a self-trapped state of the hole in the… Expand

15

Gauging a quantum heat bath with dissipative Landau-Zener transitions.

- M. Wubs, K. Saito, S. Kohler, P. Hänggi, Y. Kayanuma
- Physics, Medicine
- Physical review letters
- 15 August 2006

We calculate the exact Landau-Zener transition probabilities for a qubit with an arbitrary linear coupling to a bath at zero temperature. The final quantum state exhibits a peculiar entanglement… Expand

75- PDF

Dissipative Landau-Zener transitions of a qubit: Bath-specific and universal behavior

- K. Saito, M. Wubs, S. Kohler, Y. Kayanuma, P. Hānggi
- Physics
- 23 March 2007

We study Landau-Zener transitions in a qubit coupled to a bath at zero temperature. A general formula that is applicable to models with a nondegenerate ground state is derived. We calculate exact… Expand

80- PDF

Time-Resolved Photoelectron Spectroscopy of Dissociating 1,2-Butadiene Molecules by High Harmonic Pulses.

- Ryo Iikubo, T. Fujiwara, +4 authors Y. Kayanuma
- Chemistry, Medicine
- The journal of physical chemistry letters
- 15 June 2015

Using 42 nm high harmonic pulses, the dissociation dynamics of 1,2-butadiene was investigated by time-resolved photoelectron spectroscopy (TRPES), enabling us to observe dynamical changes of multiple… Expand

10- PDF

Recoil effect of photoelectrons in the Fermi edge of simple metals.

- Y. Takata, Y. Kayanuma, +13 authors T. Ishikawa
- Physics, Medicine
- Physical review letters
- 23 July 2008

High energy resolution photoelectron spectroscopy of conduction electrons in the vicinity of the Fermi edge in Al and Au at excitation energies of 880 and 7940 eV was carried out using synchrotron… Expand

34- PDF

Coherent destruction of tunneling, dynamic localization, and the Landau-Zener formula

- Y. Kayanuma, K. Saito
- Physics
- 27 August 2007

We clarify the internal relationship between the coherent destruction of tunneling (CDT) for a two-state model and the dynamic localization (DL) for a one-dimensional tight-binding model, under the… Expand

55- PDF

Nonadiabatic transition at a level crossing with dissipation

- Y. Kayanuma, H. Nakayama
- Physics
- 15 May 1998

A comprehensive investigation of the transition dynamics of a level-crossing system with quantum dissipation is carried out for the Landau-Zener model coupled with a system of phonons. Analytical… Expand

43- PDF

Comparison of recoil effects in graphite as observed by photoemission, electron scattering, and neutron scattering

- Maarten Vos, M. Went, Y. Kayanuma, S. Tanaka, Y. Takata, J. Mayers
- Materials Science
- 2 July 2008

Received 21 April 2008; revised manuscript received 25 May 2008; published 2 July 2008Recoil effects have been observed for neutron and electron scatterings, and in photoemission. In all caseshighly… Expand

9- PDF

Quantum state preparation in circuit QED via Landau-Zener tunneling

- K. Saito, M. Wubs, S. Kohler, P. Hānggi, Y. Kayanuma
- Physics
- 8 March 2006

We study a qubit undergoing Landau-Zener transitions enabled by the coupling to a circuit-QED mode. Summing an infinite-order perturbation series, we determine the exact nonadiabatic transition… Expand

40- PDF