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8 papers · 2 filters
Entanglement transfer from continuous variables to qubits
W. Son, M. S. Kim, Jinhyoung Lee +1
We show that two qubits can be entangled by local interactions with an entangled two-mode continuous variable state. This is illustrated by the evolution of two two-level atoms int…
Quantum interference in optical fields and atomic radiation
Z. Ficek, S. Swain
We discuss the connection between quantum interference effects in optical beams and radiation fields emitted from atomic systems. We illustrate this connection by a study of the fi…
Entanglement induced by a single-mode heat environment
M. S. Kim, J. Lee, D. Ahn +1
A thermal field, which frequently appears in problems of decoherence, provides us with minimal information about the field. We study the interaction of the thermal field and a quan…
Quantum Nonlocality for a Mixed Entangled Coherent State
D. Wilson, H. Jeong, M. S. Kim
Quantum nonlocality is tested for an entangled coherent state, interacting with a dissipative environment. A pure entangled coherent state violates Bell's inequality regardless of…
Efficient Quantum Computation using Coherent States
H. Jeong, M. S. Kim
Universal quantum computation using optical coherent states is studied. A teleportation scheme for a coherent-state qubit is developed and applied to gate operations. This scheme i…
Entanglement by a beam splitter: nonclassicality as a prerequisite for entanglement
M. S. Kim, W. Son, V. Bu{ž}ek +1
A beam splitter is a simple, readily available device which can act to entangle the output optical fields. We show that a necessary condition for the fields at the output of the be…