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6 papers · 2 filters
Homodyne Bell's inequalities for entangled mesoscopic superpositions
Andrzej Dragan, Konrad Banaszek
We present a scheme for demonstrating violation of Bell's inequalities using a spin-1/2 system entangled with a pair of classically distinguishable wave packets in a harmonic poten…
Squeezing of electromagnetic field in a cavity by electrons in Trojan states
Piotr Kochanski, Zofia Bialynicka-Birula, Iwo Bialynicki-Birula
The notion of the Trojan state of a Rydberg electron, introduced by I.Bialynicki-Birula, M.Kaliński, and J.H.Eberly (Phys. Rev. Lett. 73, 1777 (1994)) is extended to the case of th…
Time Evolution of Quantum Fractals
Daniel Wojcik, Iwo Bialynicki-Birula, Karol Zyczkowski
We propose a general construction of wave functions of arbitrary prescribed fractal dimension, for a wide class of quantum problems, including the infinite potential well, harmonic…
The finite difference algorithm for higher order supersymmetry
B. Mielnik, L. M. Nieto, O. Rosas-Ortiz
The higher order supersymmetric partners of the Schroedinger's Hamiltonians can be explicitly constructed by iterating a simple finite difference equation corresponding to the Baec…
Fidelity balance in quantum operations
Konrad Banaszek
I derive a tight bound between the quality of estimating the state of a single copy of a -level system, and the degree the initial state has to be altered in course of this proc…
Optimal quantum teleportation with an arbitrary pure state
Konrad Banaszek
We derive the maximum fidelity attainable for teleportation using a shared pair of d-level systems in an arbitrary pure state. This derivation provides a complete set of necessary…