| Records |
| Author |
Elezov, M. S.; Shcherbatenko, M. L.; Sych, D. V.; Goltsman, G. N. |
| Title |
Development of control method for an optimal quantum receiver |
Type |
Conference Article |
| Year |
2020 |
Publication |
J. Phys.: Conf. Ser. |
Abbreviated Journal |
J. Phys.: Conf. Ser. |
Volume  |
1695 |
Issue |
|
Pages |
012126 |
| Keywords |
Helstrom bound, SPD, single photon detector, below quantum limit |
| Abstract |
We propose a method for optimal displacement controlling of an optimal quantum receiver for registrations a binary coherent signal. An optimal receiver is able to distinguish between two phase-modulated states of a coherent signal. The optimal receiver controlling method can be used later in practice in various physical implementations of the optimal receiver. |
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| ISSN |
1742-6588 |
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no |
| Call Number |
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Serial |
1264 |
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| Author |
Shcherbatenko, M.; Elezov, M.; Sych, D.; Goltsman, G. N. |
| Title |
Optimal fiber optic scheme for sub-SQL quantum receiver realization |
Type |
Conference Article |
| Year |
2020 |
Publication |
J. Phys.: Conf. Ser. |
Abbreviated Journal |
J. Phys.: Conf. Ser. |
| Volume |
1695 |
Issue |
|
Pages |
012140 |
| Keywords |
sub-SQL, below quantum limit, QL, system quantum limit, SQL |
| Abstract |
Practical implementation of high-precision quantum measurements is an important problem in modern science. One of the main parts of the quantum receiver is the optical scheme. We developed and tested several optical circuits based on different types of interferometers, namely Sagnac-based scheme, Mach-Zehnder-based scheme, and Michelson-based scheme. All these schemes are assembled with optical fibers and fiber-optic components, since the fiber-optic implementation is closest to application in practical devices. Schemes were evaluated according to two main criteria: extinction and interference stability. On the basis of the obtained data, it can be concluded that the most suitable is the scheme based on the Mach-Zehnder interferometer. In continuous mode, we were able to obtain an interference extinction about 30 dB with acceptable temporal stability. |
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| Series Editor |
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Edition |
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| ISSN |
1742-6588 |
ISBN |
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| Notes |
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Approved |
no |
| Call Number |
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Serial |
1265 |
| Permanent link to this record |
