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Showing 2003Show all

40 papers · 1 filter

quant-ph2003★ 561 cited

De Broglie Wavelength of a Nonlocal Four-Photon

Philip Walther, Jian-Wei Pan, Markus Aspelmeyer +3

Superposition is one of the most distinct features of quantum theory and has been demonstrated in numerous realizations of Young's classical double-slit interference experiment and…

math-ph2003★ 5 cited

The energy of a system of relativistic massless bosons bound by oscillator pair potentials

Richard L. Hall, Wolfgang Lucha, Franz F. Schoeberl

We study the lowest energy E of a semirelativistic system of N identical massless bosons with Hamiltonian H= sum{i=1 to N} sqrt(p_i^2)+ sum{j>i=1 to N} g |r_i - r_j|^2, g > 0. We p…

hep-ex2003★ 22 cited

A measurement of the branching fractions of the b-quark into charged and neutral b-hadrons

The DELPHI Collaboration, J. Abdallah

The production fractions of charged and neutral b-hadrons in b-quark events from Z0 decays have been measured with the DELPHI detector at LEP. An algorithm has been developed, base…

quant-ph2003★ 75 cited

Entanglement swapping of noisy states: A kind of superadditivity in nonclassicality

Aditi Sen De, Ujjwal Sen, Caslav Brukner +2

We address the question as to whether an entangled state that satisfies local realism will give a violation of the same, after entanglement swapping in a suitable scenario. We cons…

quant-ph2003★ 24 cited

Cavity Assisted Nondestructive Laser Cooling of Atomic Qubits

A. Griessner, D. Jaksch, P. Zoller

We analyze two configurations for laser cooling of neutral atoms whose internal states store qubits. The atoms are trapped in an optical lattice which is placed inside a cavity. We…

hep-ph2003★ 4 cited

New Ideas on SUSY Searches at Future Linear Colliders

S. Hesselbach, O. Kittel, G. Moortgat-Pick +1

Several results obtained within the SUSY group of the ECFA/DESY linear collider study are presented: (i) a possibility to determine tan beta and the trilinear couplings A_f via pol…