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Volumn 282, Issue 5390, 1998, Pages 932-935

Spontaneous emission spectrum in double quantum dot devices

Author keywords

[No Author keywords available]

Indexed keywords

ARTICLE; ELASTICITY; PRIORITY JOURNAL; QUANTUM MECHANICS; SEMICONDUCTOR; SPECTROPHOTOMETRY;

EID: 0032582710     PISSN: 00368075     EISSN: None     Source Type: Journal    
DOI: 10.1126/science.282.5390.932     Document Type: Article
Times cited : (410)

References (30)
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    • The statistics of our inelastic emission should be regulated by the statistics of single-electron tunneling [A. Imamoglu and Y. Yamamoto, Phys. Rev. B 46, 15982 (1992)].
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    • note
    • The sample was cooled in a dilution refrigerator with a lowest temperature of 23 mK. Because of noise, the effective electron temperature is ∼50 mK in the leads. In all measurements, we applied a perpendicular magnetic field between 1.6 and 2.4 T to maximize the single-particle spacing such that we could neglect transport through excited states.
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    • 2]; see Yu. V. Nazarov, Phys. B 189, 57 (1993); T. H. Stoof and Yu. V. Nazarov, Phys. Rev. B 53, 1050 (1996).
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    • 3643122091 scopus 로고    scopus 로고
    • Also, cotunneling can give excess current for ε ≠ 0. In our measurements, however, the cotunneling current was less than 0.01 pA and can be neglected. For a review on cotunneling, see D. V. Averin and Yu. V. Nazarov, in (3), pp. 217-247.
    • Phys. Rev. Lett. , Issue.3 , pp. 217-247
    • Averin, D.V.1    Nazarov, Yu.V.2
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    • in press
    • We have reported a coherent coupling effect in double quantum dots using photon-assisted tunneling experiments [T. H. Oosterkamp et al., Nature, in press]. These observations were made when a small bias voltage was applied. In this case, emission processes do not give rise to current.
    • Nature
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    • Stimulated emission into the electromagnetic environment does play an important role for the presence of charging effects in single tunnel junctions [T. Holst et al., Phys. Rev. Lett. 73, 3455 (1994)].
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    • note
    • We used a cylindrical cavity (diameter = 36 mm and height = 84 mm), which has a minimum resonance energy of about 20 μeV, and a rectangular cavity (22 mm by 19 mm by 8 mm) with resonance frequency of about 40 μeV.
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    • note
    • Coupling to optical phonons is efficient only at much larger energies.
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    • note
    • D-4.
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    • note
    • We thank M. Devoret, L. Glazman, S. Godijn, Y. Hirayama, J. Mooij, Yu. Nazarov, Y. Tohkura, N. Uesugi, M. Uilenreef, and N. van der Vaart for help and discussions. Supported by the Dutch Foundation for Fundamental Research on Matter (FOM) and L.P.K. by the Royal Netherlands Academy of Arts and Sciences.


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