|
| related topics |
| {state, states, entangled} |
| {qubit, qubits, gate} |
| {energy, state, states} |
| {entanglement, phys, rev} |
| {measurement, state, measurements} |
| {state, algorithm, problem} |
| {alice, bob, state} |
| {trap, ion, state} |
| {phase, path, phys} |
|
Persistent entanglement in arrays of interacting particles
Hans J. Briegel, Robert Raussendorf
abstract: We study the entanglement properties of a class of $N$ qubit quantum states
that are generated in arrays of qubits with an Ising-type interaction. These
states contain a large amount of entanglement as given by their Schmidt
measure. They have also a high {\em persistency of entanglement} which means
that $\sim N/2$ qubits have to be measured to disentangle the state. These
states can be regarded as an entanglement resource since one can generate a
family of other multi-particle entangled states such as the generalized GHZ
states of $
- oai_identifier:
- oai:arXiv.org:quant-ph/0004051
- categories:
- quant-ph
- comments:
- 4 pages, 1 figure. Revised version puts more emphasis on the
presentation of the cluster states as a novel class of N-qubit entangled
states, and on the discussion of their entanglement properties in terms of
the notions of persistency, maximal connectedness, and the Schmidt measure.
Introduction has been completely rewritten. More space is now devoted to
motivating the notions of persistency and maximal connectedness, see the
paragraph after Eq.(3) and (4). Discussion of the Schmidt measure of the
cluster states has been added. More technical discussions of the 2D and 3D
generalisations of the cluster states have been shortened
- doi:
- 10.1103/PhysRevLett.86.910
- arxiv_id:
- quant-ph/0004051
- created:
- 2000-04-11
- updated:
- 2000-08-28
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