3 papers
quant-ph2004
Decoherence in a N-qubit solid-state quantum computer
B. Ischi, M. Hilke, M. Dube
We investigate the decoherence process for a quantum register composed of N qubits coupled to an environment. We consider an environment composed of one common phonon bath and seve…
quant-ph2004
Orthocomplementation and compound systems
Boris Ischi
In their 1936 founding paper on quantum logic, Birkhoff and von Neumann postulated that the lattice describing the experimental propositions concerning a quantum system is orthocom…
math-ph2004
A characterization of the Aerts product of Hilbertian lattices
Boris Ischi
Let H_1 and H_2 be complex Hilbert spaces, L_1=P(H_1) and L_2=P(H_2) the lattices of closed subspaces, and let L be a complete atomistic lattice. We prove under some weak assumptio…