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- Center for NanoScienceDE177 papers
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5 papers · 2 filters
Deterministic spin-wave interferometer based on Rydberg blockade
Ran Wei, Bo Zhao, Youjin Deng +2
The spin-wave (SW) NOON state is an -particle Fock state with two atomic spin-wave modes maximally entangled. Attributed to the property that the phase is sensitive to collectiv…
Landau-Zener sweeps and sudden quenches in coupled Bose-Hubbard chains
Christian Kasztelan, Stefan Trotzky, Yu-Ao Chen +4
We simulate numerically the dynamics of strongly correlated bosons in a two-leg ladder subject to a time-dependent energy bias between the two chains. When all atoms are initially…
Polynomial invariants for discrimination and classification of four-qubit entanglement
Oliver Viehmann, Christopher Eltschka, Jens Siewert
It is well known that the number of entanglement classes in SLOCC (stochastic local operations and classical communication) classifications increases with the number of qubits and…
Quantum Eavesdropping without Interception: An Attack Exploiting the Dead Time of Single Photon Detectors
Henning Weier, Harald Krauss, Markus Rau +3
The security of quantum key distribution (QKD) can easily be obscured if the eavesdropper can utilize technical imperfections of the actual implementation. Here we describe and exp…
Highly Entangled States With Almost No Secrecy
Matthias Christandl, Norbert Schuch, Andreas Winter
In this paper we illuminate the relation between entanglement and secrecy by providing the first example of a quantum state that is highly entangled, but from which, nevertheless,…