0603212v1

related topics
{classical, space, random}
{qubit, qubits, gate}
{time, decoherence, evolution}
{group, space, representation}
{states, state, optimal}
{entanglement, phys, rev}
{information, entropy, channel}
{operator, operators, space}
{state, states, coherent}
{error, code, errors}
{state, states, entangled}

Quantum baker maps with controlled-NOT coupling

Raul O. Vallejos, P. R. del Santoro, A. M. Ozorio de Almeida

abstract: The characteristic stretching and squeezing of chaotic motion is linearized within the finite number of phase space domains which subdivide a classical baker map. Tensor products of such maps are also chaotic, but a more interesting generalized baker map arises if the stacking orders for the factor maps are allowed to interact. These maps are readily quantized, in such a way that the stacking interaction is entirely attributed to primary qubits in each map, if each subsystem has power-of-two Hilbert space dimension. We here study the particular example of two baker maps that interact via a controlled-not interaction. Numerical evidence indicates that the control subspace becomes an ideal Markovian environment for the target map in the limit of large Hilbert space dimension.

oai_identifier:
oai:arXiv.org:quant-ph/0603212
categories:
quant-ph
comments:
8 pages
doi:
10.1088/0305-4470/39/18/028
arxiv_id:
quant-ph/0603212
created:
2006-03-23

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