najoNanosystems: Physics, Chemistry, MathematicsНаносистемы: физика, химия, математика2220-80542305-7971Университет ИТМО10.17586/2220-8054-2025-16-3-333-342najo-322Research ArticleNANOSYSTEMS: PHYSICS, CHEMISTRY, MATHEMATICSНАНОСИСТЕМЫ: ФИЗИКА, ХИМИЯ, МАТЕМАТИКАSub-Poissonian light in fluctuating thermal-loss bosonic channelsСубпуассоновский свет в бозонных каналах с флуктуирующими тепловыми потерямиСтепановИ.StepanovI.

Ilia Stepanov

Kadetskaya Line, 3, St. Petersburg, 199034

i.stepanov@itmo.ruhttps://orcid.org/0000-0002-9081-8900ГончаровР.GoncharovR.

Roman Goncharov

Kadetskaya Line, 3, St. Petersburg, 199034

Birzhevaya Line, 16, Saint Petersburg, 199034

6th Vasilyevskogo Ostrova Line, 59, Saint Petersburg, 199178

rkgoncharov@itmo.ruhttps://orcid.org/0000-0002-1023-3284КиселевА. Д.KiselevA. D.

Alexei D. Kiselev

Birzhevaya Line, 16, Saint Petersburg, 199034

Kadetskaya Line 3b, Saint Petersburg 199034

adkiselev@itmo.ruQuantum Information Laboratory, ITMO UniversityRussian FederationQuantum Information Laboratory, ITMO University; Laboratory for Quantum Communications, ITMO University; SMARTS-Quanttelecom LLCRussian FederationLaboratory for Quantum Communications, ITMO University; Laboratory of Quantum Processes and Measurements, ITMO UniversityRussian Federation202529062025163333342Copyright © Stepanov I., Goncharov R., Kiselev A.D., 20252025Степанов И., Гончаров Р., Киселев А.Д.Stepanov I., Goncharov R., Kiselev A.D.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://nanojournal.ifmo.ru/jour/article/view/322

We study the photon statistics of a single-mode sub-Poissonian light propagating in the lossy thermal bosonic channel with fluctuating transmittance which can be regarded as a temperature-dependent model of the turbulent atmosphere. By assuming that the variance of the transmittance can be expressed in terms of the fluctuation strength parameter we show that the photon statistics of the light remains sub-Poissonian provided the averaged transmittance exceeds its critical value. The critical transmittance is analytically computed as a function of the input states’ parameters, temperature, and the fluctuation strength. The results are applied to study special cases of the one-mode squeezed states and the odd optical Shr¨odinger cats.

Мы изучаем статистику фотонов одномодового субпуассоновского света, распространяющегося в тепловом бозонном канале с потерями и флуктуирующим пропусканием, который можно рассматривать как зависящую от температуры модель турбулентной атмосферы. Предполагая, что дисперсия пропускания может быть выражена через параметр силы флуктуации, мы показываем, что статистика фотонов света остается субпуассоновской при условии, что усредненный коэффициент пропускания превышает свое критическое значение. Критический коэффициент пропускания аналитически вычисляется как функция параметров входных состояний, температуры и силы флуктуации. Результаты применяются для изучения особых случаев одномодовых сжатых состояний и нечетных оптических состояний кота Шредингера.

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The authors declare that there are no conflicts of interest present.