Quantum coherence induces pulse shape modification in a semiconductor optical amplifier at room temperature

被引：48

作者：

Kolarczik, Mirco ^{[1
]}

Owschimikow, Nina ^{[1
]}

Korn, Julian ^{[2
]}

Lingnau, Benjamin ^{[2
]}

Kaptan, Yuecel ^{[1
]}

Bimberg, Dieter ^{[3
]}

Scholl, Eckehard ^{[2
]}

Luedge, Kathy ^{[2
]}

Woggon, Ulrike ^{[1
]}

机构：

[1] Tech Univ Berlin, Inst Opt & Atomare Phys, D-10623 Berlin, Germany

[2] Tech Univ Berlin, Inst Theoret Phys, D-10623 Berlin, Germany

[3] Tech Univ Berlin, Inst Festkorperphys, D-10623 Berlin, Germany

来源：

NATURE COMMUNICATIONS | 2013年 / 4卷

关键词：

RABI OSCILLATIONS; PROPAGATION; DYNAMICS; LASERS;

D O I：

10.1038/ncomms3953

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Coherence in light-matter interaction is a necessary ingredient if light is used to control the quantum state of a material system. Coherent effects are firmly associated with isolated systems kept at low temperature. The exceedingly fast dephasing in condensed matter environments, in particular at elevated temperatures, may well erase all coherent information in the material at timescales shorter than a laser excitation pulse. Here we show for an ensemble of semiconductor quantum dots that even in the presence of ultrafast dephasing, for suitably designed condensed matter systems quantum-coherent effects are robust enough to be observable at room temperature. Our conclusions are based on an analysis of the reshaping an ultrafast laser pulse undergoes on propagation through a semiconductor quantum dot amplifier. We show that this pulse modification contains the signature of coherent light-matter interaction and can be controlled by adjusting the population of the quantum dots via electrical injection.

引用

页数：7

共 37 条

[1]

Allen L., 1987, Optical Resonance and TwoLevel Atoms

[2]

Bimberg D, 2008, NANOSCI TECHNOL, P1, DOI 10.1007/978-3-540-77899-8

[3] NONEQUILIBRIUM SEMICONDUCTOR DYNAMICS [J].

BINDER, R ;

KOCH, SW .

PROGRESS IN QUANTUM ELECTRONICS, 1995, 19 (4-5) :307-462

[4] Exciton relaxation and dephasing in quantum-dot amplifiers from room to cryogenic temperature [J].

Borri, P ;

Langbein, W ;

Schneider, S ;

Woggon, U ;

Sellin, RL ;

Ouyang, D ;

Bimberg, D .

IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS, 2002, 8 (05) :984-991

[5] Rabi oscillations in the excitonic ground-state transition of InGaAs quantum dots [J].

Borri, P ;

Langbein, W ;

Schneider, S ;

Woggon, U ;

Sellin, RL ;

Ouyang, D ;

Bimberg, D .

PHYSICAL REVIEW B, 2002, 66 (08) :1-4

[6]

Brif C, 2012, ADV CHEM PHYS, V148, P1

[7]

Capua A., 2012, PREPRINT

[8] Ultrafast Rabi flopping and coherent pulse propagation in a quantum cascade laser [J].

Choi, Hyunyong ;

Gkortsas, Vasileios-Marios ;

Diehl, Laurent ;

Bour, David ;

Corzine, Scott ;

Zhu, Jintian ;

Hoefler, Gloria ;

Capasso, Federico ;

Kaertner, Franz X. ;

Norris, Theodore B. .

NATURE PHOTONICS, 2010, 4 (10) :706-710

[9] RABI FLOPPING IN SEMICONDUCTORS [J].

CUNDIFF, ST ;

KNORR, A ;

FELDMANN, J ;

KOCH, SW ;

GOBEL, EO ;

NICKEL, H .

PHYSICAL REVIEW LETTERS, 1994, 73 (08) :1178-1181

[10] Impact of Coulomb Scattering on the Ultrafast Gain Recovery in InGaAs Quantum Dots [J].

Gomis-Bresco, J. ;

Dommers, S. ;

Temnov, V. V. ;

Woggon, U. ;

Laemmlin, M. ;

Bimberg, D. ;

Malic, E. ;

Richter, M. ;

Schoell, E. ;

Knorr, A. .

PHYSICAL REVIEW LETTERS, 2008, 101 (25)

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