9811036v1

related topics
{states, state, optimal}
{cos, sin, state}
{information, entropy, channel}
{state, phys, rev}
{entanglement, phys, rev}
{vol, operators, histories}
{theory, mechanics, state}
{measurement, state, measurements}
{qubit, qubits, gate}
{state, states, entangled}

Non-linear operations in quantum information theory

Daniel R. Terno

abstract: Quantum information theory is used to analize various non-linear operations on quantum states. The universal disentanglement machine is shown to be impossible, and partial (negative) results are obtained in the state-dependent case. The efficiency of the transformation of non-orthogonal states into orthogonal ones is discussed.

oai_identifier:
oai:arXiv.org:quant-ph/9811036
categories:
quant-ph
comments:
11 pages, LaTeX, 3 figures on separate pages
doi:
10.1103/PhysRevA.59.3320
arxiv_id:
quant-ph/9811036
journal_ref:
Phys.Rev. A59 (1999) 3320
created:
1998-11-15

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