V. Voronov / Natural Science 2 (2010) 923-927

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ferron-like states are realized in ligands. Here it is nec-

essary to explain that full spin of ferron state is formed

by the local spin and electron spin (see [12] and the ref-

erences therein). As to the local spin is concerned, it is

caused by magnetic (in particular, antiferromagnetic)

state of the matrix, where the conductive electron moves.

In other words, there is always specific information on

the state of such a matrix.

Formally, in the case of heterospin complexes dis-

cussed here, a matrix, in which the unpaired electron

with spin 1/2S is inserted, is a ligand molecule and

not solid phase of microsample as it is observed in man-

ganites [12]. The assumption on realization of ferron-

like states should mean that the result of the interaction

of unpaired electron with electron subsystem of the

ligand will be the state with non-compensated electron

spin which differs from the state of free electron. In our

case, the quantum objects employed in the calculations

are electrons. The emergence of ferron states allows one

to distinguish electrons transferred to these states for a

while. For a certain time, an electron is located on d

,

or

-orbitals of the central ion (for example, nickel).

Further, due to the specifics of intramolecular spin-spin

interactions the electron is temporarily transferred to

ferron state. In a certain period of time (typical for

ferron), the electron is again located on metal orbitals.

Then the cycle is repeated. Here, once should stress once

again that the ferron state differs from the free electron

state. Really, it is a common knowledge that a peculiar

feature of the objects called quasi-particles is the differ-

ence of their mass from the mass of the corresponding

free particle. So, the mass of polyaron is hundrets times

higher than that of free electron. This feature is also in-

herits in ferrons [12]. As was mentioned above, the full

spin of ferron state also differs from spin of free electron.

Thus, the state of entanglement, needed for operation of

a quantum computer, turns out to be modeled. The pos-

sible route to a large number of quantum objects has

been described above.

One should explain why heterospin complexes can be

considered as possible objects to model quantum calcu-

lations. These are paramagnetic systems containing as

ligands the molecular systems having unpaired electron

or unpaired electrons. The role of d or

metal

orbitals here is two-fold. Their population with unpaired

electrons participating in intramolecular spin-spin inter-

actions ensures the validity of the expression (1). Be-

sides, it is just unpaired electron on these orbitals, being

free relative to its magnetic properties, is transferred for

a while to other state needed for modeling the entangle-

ment of quantum particle. By changing the structure and

composition of a paramagnetic compound as well as the

external conditions one can control the entanglement

degree of ferron state and state of a free electron, thus

controlling also the calculation procedure.

4. CONCLUSIONS

In conclusion, one should make the following remarks.

The experimental investigations carried out by the pre-

sent time are still far from practical realization of the

quantum calculations idea. Therefore, while the suitable

objects for realization of quantum computers idea will be

searched, certain intermediate variants could appear. In

such a situation, an approach based on preliminary mod-

eling the operations which should be realized in a real

quantum computer with their subsequent application in

specific electronic schemes, seems to be attractive. For

this purpose the compounds containing the atoms with

vacant 3d

,4

and 5

shells could be suitable.

We mean here the compounds (for example, heterospin

complexes), which unique properties are caused by

strong interactions of electronic and magnetic degrees of

freedom, i.e. strongly correlated systems. Among these

compounds could be, in particular, heterospin systems,

i.e. the complexes of paramagnetic ions of transition

metals with organic radicals, since spin-spin coupling

between unpaired electron spin of different paramagnetic

centers of the molecule is typical for such objects. The

coupling mentioned can result in phase immiscibility to

afford heterogeneous spin states. In its turn, such states

can be used for modeling the processes characteristic of

quantum computer.

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