1.6k citations
- GSI Helmholtz Centre for Heavy Ion ResearchDE1k papers
- Centre National de la Recherche ScientifiqueFR363 papers
- ExtreMe Matter Institute EMMIDE361 papers
- Heidelberg UniversityDE283 papers
- Goethe University FrankfurtDE260 papers
- Michigan State UniversityUS258 papers
- Joint Institute for Nuclear ResearchRU238 papers
- Max Planck Institute for Nuclear PhysicsDE227 papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR222 papers
- European Organization for Nuclear ResearchCH212 papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR211 papers
- Lawrence Berkeley National LaboratoryUS211 papers
9 papers · 2 filters
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…
Three level atom optics in dipole traps and waveguides
K. Eckert, J. Mompart, R. Corbalan +2
An analogy is explored between a setup of three atomic traps coupled via tunneling and an internal atomic three-level system interacting with two laser fields. Within this scenario…
Complex chaos in the conditional dynamics of qubits
T. Kiss, I. Jex, G. Alber +1
We analyze the consequences of iterative measurement-induced nonlinearity on the dynamical behavior of qubits. We present a one-qubit scheme where the equation governing the time e…
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…
Controlling quantum systems by embedded dynamical decoupling schemes
Oliver Kern, Gernot Alber
A dynamical decoupling method is presented which is based on embedding a deterministic decoupling scheme into a stochastic one. This way it is possible to combine the advantages of…