scholarly journals Steady Schrödinger cat state of a driven Ising chain

2013 ◽  
Vol 86 (4) ◽  
Author(s):  
Sébastien Camalet
2013 ◽  
Vol 27 (30) ◽  
pp. 1350176
Author(s):  
CHUN-LI ZANG ◽  
JING YU ◽  
WAN-LI YANG ◽  
MANG FENG ◽  
SU-PENG KOU

We propose a possible way, theoretically, to manipulate a Schrödinger cat state of two degenerate ferromagnetic [FM] ground states of the transverse Ising model [TIM] using macroscopic quantum tunneling (MQT) effect. The MQT process is calculated based on a high-order degenerate perturbative method and can be understood in the language of individual virtual fermions hopping along the spin chain. We present an analytical description of the tunneling process, and discuss experimental feasibility for generating the Cat state in the linear ion trap.


2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Damian Kołaczek ◽  
Bartłomiej J. Spisak ◽  
Maciej Wołoszyn

AbstractThe coherent superposition of two well separated Gaussian wavepackets, with defects caused by their imperfect preparation, is considered within the phase-space approach based on the Wigner distribution function. This generic state is called the defective Schrödinger cat state due to this imperfection which significantly modifies the interference term. Propagation of this state in the phase space is described by the Moyal equation which is solved for the case of a dispersive medium with a Gaussian barrier in the above-barrier reflection regime. Formally, this regime constitutes conditions for backscattering diffraction phenomena. Dynamical quantumness and the degree of localization in the phase space of the considered state as a function of its imperfection are the subject of the performed analysis. The obtained results allow concluding that backscattering communication based on the defective Schrödinger cat states appears to be feasible with existing experimental capabilities.


1996 ◽  
Vol 54 (5) ◽  
pp. 4519-4527 ◽  
Author(s):  
Peter Goetsch ◽  
Paolo Tombesi ◽  
David Vitali

Nature ◽  
2005 ◽  
Vol 438 (7068) ◽  
pp. 639-642 ◽  
Author(s):  
D. Leibfried ◽  
E. Knill ◽  
S. Seidelin ◽  
J. Britton ◽  
R. B. Blakestad ◽  
...  

1998 ◽  
Vol 12 (29n30) ◽  
pp. 1209-1216 ◽  
Author(s):  
M. H. Y. Moussa ◽  
B. Baseia

We present a scheme for the teleportation of a coherent state or a mesoscopic superposition of coherent states — the Schrödinger-cat state. The proposal involves a mesoscopic-correlated state as the quantum channel which is generated through an adaptation of a quantum switch scheme. The required joint measurement performed in a mesoscopic Bell basis is accomplished through a technique for detection of a Schrödinger-cat state "trapped" in a cavity.


1991 ◽  
Vol 43 (11) ◽  
pp. 6458-6461 ◽  
Author(s):  
Tetsuo Ogawa ◽  
Masahito Ueda ◽  
Nobuyuki Imoto

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