60 citations · 77 across the 4 of their papers we have counts for
8 papers
Asymptotic correctability of Bell-diagonal quantum states and maximum tolerable bit error rates
Kedar S. Ranade, Gernot Alber
The general conditions are discussed which quantum state purification protocols have to fulfill in order to be capable of purifying Bell-diagonal qubit-pair states, provided they c…
Security bound of two-bases quantum key-distribution protocols using qudits
Georgios M. Nikolopoulos, Gernot Alber
We investigate the security bounds of quantum cryptographic protocols using -level systems. In particular, we focus on schemes that use two mutually unbiased bases, thus extendi…
Suppressing decoherence of quantum algorithms by jump codes
Oliver Kern, Gernot Alber
The stabilizing properties of one-error correcting jump codes are explored under realistic non-ideal conditions. For this purpose the quantum algorithm of the tent-map is decompose…
Universal Sets of Quantum Gates for Detected Jump-Error Correcting Quantum Codes
G. Alber, M. Mussinger, A. Delgado
A universal set of quantum gates is constructed for the recently developed jump-error correcting quantum codes. These quantum codes are capable of correcting errors arising from th…
Generalized quantum XOR-gate for quantum teleportation and state purification in arbitrary dimensional Hilbert spaces
Gernot Alber, Aldo Delgado, Nicolas Gisin +1
A generalization of the quantum XOR-gate is presented which operates in arbitrary dimensional Hilbert spaces. Together with one-particle Fourier transforms this gate is capable of…
Optimal universal two-particle entanglement processes in arbitrary dimensional Hilbert spaces
G. Alber, A. Delgado, I. Jex
Universal two-particle entanglement processes are analyzed in arbitrary dimensional Hilbert spaces. On the basis of this analysis the class of possible optimal universal entangleme…