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| related topics |
| {qubit, qubits, gate} |
| {operator, operators, space} |
| {states, state, optimal} |
| {time, systems, information} |
| {let, theorem, proof} |
| {energy, gaussian, time} |
| {observables, space, algebra} |
| {measurement, state, measurements} |
| {energy, state, states} |
| {equation, function, exp} |
| {state, states, entangled} |
| {wave, scattering, interference} |
| {cos, sin, state} |
| {theory, mechanics, state} |
| {classical, space, random} |
| {particle, mechanics, theory} |
| {group, space, representation} |
| {state, algorithm, problem} |
|
Programmable Quantum Networks with Pure States
Alexander Yu. Vlasov
abstract: Modern classical computing devices, except of simplest calculators, have von
Neumann architecture, i.e., a part of the memory is used for the program and a
part for the data. It is likely, that analogues of such architecture are also
desirable for the future applications in quantum computing, communications and
control. It is also interesting for the modern theoretical research in the
quantum information science and raises challenging questions about an
experimental assessment of such a programmable models. Together with some
progress in the given direction, such ideas encounter specific problems arising
from the very essence of quantum laws. Currently are known two different ways
to overcome such problems, sometime denoted as a stochastic and deterministic
approach. The presented paper is devoted to the second one, that is also may be
called the programmable quantum networks with pure states.
In the paper are discussed basic principles and theoretical models that can
be used for the design of such nano-devices, e.g., the conditional quantum
dynamics, the Nielsen-Chuang "no-programming theorem, the idea of deterministic
and stochastic quantum gates arrays. Both programmable quantum networks with
finite registers and hybrid models with continuous quantum variables are
considered. As a basic model for the universal programmable quantum network
with pure states and finite program register is chosen a "Control-Shift"
quantum processor architecture with three buses introduced in earlier works. It
is shown also, that quantum cellular automata approach to the construction of
an universal programmable quantum computer often may be considered as the
particular case of such design.
- oai_identifier:
- oai:arXiv.org:quant-ph/0503230
- categories:
- quant-ph cs.OH
- comments:
- LaTeX, 12pt, 34 pages, 21 eps files, quality of ray-traced figures is
reduced to make files smaller; it is slightly modified preprint version of
invited chapter submitted to Nova Science
- arxiv_id:
- quant-ph/0503230
- created:
- 2005-03-30
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