58 citations · 140 across the 6 of their papers we have counts for
6 papers
Symmetries and security of a quantum-public-key encryption based on single-qubit rotations
U. Seyfarth, G. M. Nikolopoulos, G. Alber
Exploring the symmetries underlying a previously proposed encryption scheme which relies on single-qubit rotations, we derive an improved upper bound on the maximum information tha…
Provable entanglement and information cost for qubit-based quantum key-distribution protocols
G. M. Nikolopoulos, A. Khalique, G. Alber
Provable entanglement has been shown to be a necessary precondition for unconditionally secure key generation in the context of quantum cryptographic protocols. We estimate the max…
Robustness of the BB84 quantum key distribution protocol against general coherent attacks
Georgios M. Nikolopoulos, Gernot Alber
It is demonstrated that for the entanglement-based version of the Bennett-Brassard (BB84) quantum key distribution protocol, Alice and Bob share provable entanglement if and only i…
Antisymmetric multi-partite quantum states and their applications
I. Jex, G. Alber, S. M. Barnett +1
Entanglement is a powerful resource for processing quantum information. In this context pure, maximally entangled states have received considerable attention. In the case of bipart…
Detected jump-error correcting quantum codes, quantum error designs and quantum computation
G. Alber, Th. Beth, Ch. Charnes +3
The recently introduced detected-jump correcting quantum codes are capable of stabilizing qubit-systems against spontaneous decay processes arising from couplings to statistically…
Stabilizing distinguishable qubits against spontaneous decay by detected-jump correcting quantum codes
G. Alber, Th. Beth, Ch. Charnes +3
A new class of error-correcting quantum codes is introduced capable of stabilizing qubits against spontaneous decay arising from couplings to statistically independent reservoirs.…