ویژگی‌های حالت‌های کِر چلاندۀ برانگیخته

نوع مقاله : مقاله پژوهشی کامل

نویسندگان

1 گروه فوتونیک، دانشگاه تحصیلات تکمیلی صنعتی و فناوری پیشرفته، کرمان، ایران

2 دانشکدۀ فیزیک، دانشگاه صنعتی شیراز، شیراز، ایران

چکیده

محیط کِر یک راه مفید برای دست‌یابی به جنبه‌های غیرکلاسیکی یک سامانه نوری است. هم‌چنین، حالت‌های چلانده به‌عنوان بهترین حالت‌های غیرکلاسیکی شناخته می‌شوند. ازاین‌رو، با استفاده از یک فرآیند دوفوتونی و محیط کِر، حالت‌های کِر چلانده می‌توانند تولید شوند تا جنبه‌های غیرکلاسیکی حالت‌های کِر را بهبود بخشند. در این مقاله، حالت‌های کِر چلاندۀ برانگیخته معرّفی می‌شوند که در آن برانگیختگی با عملگر آفرینش بوزونی بیان می‌شود. سپس، برخی از ویژگی‌های فیزیکی حالت‎‌های به‌دست‌آمده بررسی می‌شوند. نشان داده می‌شود که برانگیختگی می‌تواند باعث تغییر آمار فوتون‌های تابشی از پواسونی به زیرپواسونی شود. هم‌چنین، افزایش فوتون به سامانۀ تابشی مورد بحث به‌طور قابل ملاحظه‌ای عمق و دامنۀ چلاندگی را تقویت می‌کند.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Properties of excited squeezed Kerr states

نویسندگان [English]

  • Mohammad Ehsan Farzan 1
  • Mohammad Javad Faghihi 1
  • Gholamreza Honarasa 2
1 Department of Photonics, Graduate University of Advanced Technology, Kerman, Iran
2 Department of Physics, Shiraz University of Technology, Shiraz, Iran
چکیده [English]

The Kerr-like medium is a beneficial way to obtain the nonclassicality features of a quantum state of light. Moreover, squeezed states are well-known as the best nonclassical ones. Hence, by applying a two-photon parametric process as well as a Kerr medium, squeezed Kerr states can be generated to improve the nonclassicality aspects of Kerr states. In this paper, excited squeezed Kerr states are introduced in which the excitation is normally expressed via bosonic creation operator. Afterward, some physical properties of the introduced states are numerically studied. It is seen that with the help of excitation, the photon statistics of the radiation field can be changed from Poissonian statistics to sub-Poissonian one. Furthermore, adding photons to the considered quantum states remarkably enhances the depth and the domain of quadrature squeezing.

کلیدواژه‌ها [English]

  • Squeezed Kerr state
  • Photon-addition
  • Photon statistics
  • Squeezing
  • Nonclassical state
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