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19912026
Showing 2004 · quant-phShow all

8 papers · 2 filters

quant-ph2004★ 78 cited

Spontaneous emission of a photon: wave packet structures and atom-photon entanglement

M. V. Fedorov, M. A. Efremov, A. E. Kazakov +3

Spontaneous emission of a photon by an atom is described theoretically in three dimensions with the initial wave function of a finite-mass atom taken in the form of a finite-size w…

quant-ph2004★ 9 cited

Robust Multi-Partite Multi-Level Quantum Protocols

Hideomi Nihira, C. R. Stroud

We present a tripartite three-level state that allows a secret sharing protocol among the three parties, or a quantum key distribution protocol between any two parties. The state u…

quant-ph2004★ 42 cited

Universality in the entanglement structure of ferromagnets

J. S. Pratt

Systems of exchange-coupled spins are commonly used to model ferromagnets. The quantum correlations in such magnets are studied using tools from quantum information theory. Isotrop…

quant-ph2004★ 16 cited

Scalable fault-tolerant quantum computation in DFS blocks

Zheng-Wei Zhou, Bo Yu, Xingxiang Zhou +2

We investigate how to concatenate different decoherence-free subspaces (DFSs) to realize scalable universal fault-tolerant quantum computation. Based on tunable interactions,…

quant-ph2004★ 1.7k cited

Finite-Time Disentanglement via Spontaneous Emission

Ting Yu, J. H. Eberly

We show that under the influence of pure vacuum noise two entangled qubits become completely disentangled in a finite time, and in a specific example we find the time to be given b…

quant-ph2004★ 141 cited

Non-Markovian Quantum Trajectories Versus Master Equations: Finite Temperature Heat Bath

Ting Yu

The interrelationship between the non-Markovian stochastic Schrödinger equations and the corresponding non-Markovian master equations is investigated in the finite temperature regi…

quant-ph2004★ 3 cited

Spin and Statistics in Galilean Covariant Field Theory

C. R. Hagen

The existence of a possible connection between spin and statistics is explored within the framework of Galilean covariant field theory. To this end fields of arbitrary spin are con…

quant-ph2004★ 109 cited

Packet narrowing and quantum entanglement in photoionization and photodissociation

M. V. Fedorov, M. A. Efremov, A. E. Kazakov +3

The narrowing of electron and ion wave packets in the process of photoionization is investigated, with the electron-ion recoil fully taken into account. Packet localization of this…