Photonic Superfluidity in a Kerr Nonlinear Black Body

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2005,（4）
• 页码范围: 880-883
• 页数: 4页
• 语种: 英文

摘要

We study a photon blackbody field in Kerr nonlinear crystals in a superfluid state in which bare photons with opposite wave vectors and helicities are bound into pairs and unpaired photons are transformed into a new kind of quasiparticle, the nonpolariton.The photon-pair system is a superfluid and the nonpolariton system is a normal fluid.At zero temperature the superfluid possesses a large persistent energy density.It has been found that the spectral energy density and the radiation pressure of a Kerr nonlinear black body are larger than those of a normal black body.