Tunneling blockade and single-photon emission in GaAs double quantum wells
Tunneling blockade and single-photon emission in GaAs double quantum wells
复制标题
GaAs双量子阱中的隧道阻断和单光子发射
DOI:
10.1103/physrevb.98.155311
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发表时间:
2018
影响因子:
3.7
通讯作者:
P. V. Santos
中科院分区:
文献类型:
--
作者:
M. Yuan;A. Hernández-Mínguez;K. Biermann;P. V. Santos
We report on the selective excitation of single impurity-bound exciton states in a GaAs double quantum well (DQW). The structure consists of two quantum wells (QWs) coupled by a thin tunnel barrier. The DQW is subject to a transverse electric field to create spatially indirect inter-QW excitons with electrons and holes located in different QWs. We show that the presence of intra-QW charged excitons (trions) blocks carrier tunneling across the barrier to form indirect excitons, thus opening a gap in their emission spectrum. This behavior is attributed to the low binding energy of the trions. Within the tunneling blockade regime, emission becomes dominated by processes involving excitons bound to single shallow impurities, which behave as two-level centers activated by resonant tunneling. The quantum nature of the emission is confirmed by the antibunched photon emission statistics. The narrow distribution of emission energies (meV) and the electrical connection to the QWs make these single-exciton centers interesting candidates for applications in single-photon sources.
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DOI:
--
发表时间:
1994
期刊:
影响因子:
--
作者:
Y. Takahashi;Y. Kato;S. Kano;S. Fukatsu;Y. Shiraki;R. Ito
通讯作者:
R. Ito
影响因子:
3.7
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DOI:
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发表时间:
1989
期刊:
Physical Review B (Condensed Matter)
影响因子:
--
作者:
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通讯作者:
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DOI:
--
发表时间:
1998
期刊:
影响因子:
--
作者:
T. Huber;A. Zrenner;W. Wegscheider;M. Bichler
通讯作者:
M. Bichler
影响因子:
3.2
作者:
Hammack, AT;Gippius, NA;Gossard, AC
通讯作者:
Gossard, AC