scholarly journals Preparation and study of the entanglement of the Schrödinger cat state on the ibmq-melbourne quantum computer

2020 ◽  
Vol 23 (4) ◽  
pp. 43001
Author(s):  
Kuzmak ◽  
Tkachuk
Keyword(s):  
Quantum Computer ◽  
Schrödinger Cat ◽  
Schrodinger Cat State

scholarly journals Phase-space studies of backscattering diffraction of defective Schrödinger cat states

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Damian Kołaczek ◽  
Bartłomiej J. Spisak ◽  
Maciej Wołoszyn
Keyword(s):  
Phase Space ◽  
Dispersive Medium ◽  
Wigner Distribution ◽  
Interference Term ◽  
Wigner Distribution Function ◽  
The Subject ◽  
Schrödinger Cat ◽  
Cat States ◽  
Schrodinger Cat State ◽  
Space Approach

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.

Effect of feedback on the decoherence of a Schrödinger-cat state: A quantum trajectory description

1996 ◽  
Vol 54 (5) ◽  
pp. 4519-4527 ◽  
Author(s):  
Peter Goetsch ◽  
Paolo Tombesi ◽  
David Vitali
Keyword(s):  
Quantum Trajectory ◽  
Schrödinger Cat ◽  
Schrodinger Cat State

Creation of a six-atom ‘Schrödinger cat’ state

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

Teleporting the Schrödinger Cat State

1998 ◽  
Vol 12 (29n30) ◽  
pp. 1209-1216 ◽  
Author(s):  
M. H. Y. Moussa ◽  
B. Baseia
Keyword(s):  
Coherent State ◽  
Quantum Channel ◽  
Coherent States ◽  
Joint Measurement ◽  
Bell Basis ◽  
Schrödinger Cat ◽  
Schrodinger Cat State

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.

Generation of the Schrödinger-cat state by continuous photodetection

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