Ultraslow optical modes in Bose-Einstein Condensates

被引：0

作者：

Muestecaplioglu, Oezguer E. ^{[1
]}

Tarhan, Devrim ^{[2
]}

机构：

[1] Koc Univ, Dept Phys, TR-34450 Istanbul, Turkey

[2] Harran Univ, Dept Phys, Sanliurfa, Turkey

来源：

PHOTONIC MATERIALS, DEVICES, AND APPLICATIONS II | 2007年 / 6593卷

关键词：

Bose-Einstein condensates; ultraslow light; waveguiding; dispersion;

D O I：

10.1117/12.721840

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Light can be slowed down to ultraslow speeds via electromagnetically induced transparency in atomic Bose-Einstein condensates. This is thought to be useful for storage of quantum information for weak probe pulses. We investigate the effects of inhomogeneous density profile of-the condensate on propagation of such ultraslow pulses. We find that spatial density of an atomic condensate leads to a graded refractive index profile, for an off-resonant probe pulse when condensate parameters are suitably chosen. Within the window of negligible absorption, conditions for degenerate multiple waveguide modes are determined. Both analytical and numerical studies are presented to reveal the effects of experimentally controllable parameters, such as temperature and interatomic interaction strength on the number of modes. Group velocity dispersion and modal dispersion are discussed. The effect of waveguide dispersion, in addition to usual material dispersion, on ultraslow pulses is pointed out.

引用

页数：9

共 26 条

[11]

Giorgini S, 1997, J LOW TEMP PHYS, V109, P309

[12] Electromagnetically induced transparency [J].

Harris, SE .

PHYSICS TODAY, 1997, 50 (07) :36-42

[13] Light speed reduction to 17 metres per second in an ultracold atomic gas [J].

Hau, LV ;

Harris, SE ;

Dutton, Z ;

Behroozi, CH .

NATURE, 1999, 397 (6720) :594-598

[14] Ultraslow group velocity and enhanced nonlinear optical effects in a coherently driven hot atomic gas [J].

Kash, MM ;

Sautenkov, VA ;

Zibrov, AS ;

Hollberg, L ;

Welch, GR ;

Lukin, MD ;

Rostovtsev, Y ;

Fry, ES ;

Scully, MO .

PHYSICAL REVIEW LETTERS, 1999, 82 (26) :5229-5232

[15] Stopping light via hot atoms [J].

Kocharovskaya, O ;

Rostovtsev, Y ;

Scully, MO .

PHYSICAL REVIEW LETTERS, 2001, 86 (04) :628-631

[16]

Landau L.D., 1958, QUANTUM MECH

[17] Observation of coherent optical information storage in an atomic medium using halted light pulses [J].

Liu, C ;

Dutton, Z ;

Behroozi, CH ;

Hau, LV .

NATURE, 2001, 409 (6819) :490-493

[18] Temperature variation of ultraslow light in a cold gas [J].

Morigi, G ;

Agarwal, GS .

PHYSICAL REVIEW A, 2000, 62 (01) :9

[19] Slow light propagation in trapped atomic quantum gases -: art. no. 013604 [J].

Müstecaplioglu, ÖE ;

You, L .

PHYSICAL REVIEW A, 2001, 64 (01) :5

[20] Propagation of Raman-matched laser pulses through a Bose-Einstein condensate [J].

Müstecaplioglu, ÖE ;

You, L .

OPTICS COMMUNICATIONS, 2001, 193 (1-6) :301-312

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