Highly indistinguishable photons from deterministic quantum-dot microlenses utilizing three-dimensional in situ electron-beam lithography

被引：256

作者：

Gschrey, M. ^{[1
]}

Thoma, A. ^{[1
]}

Schnauber, P. ^{[1
]}

Seifried, M. ^{[1
]}

Schmidt, R. ^{[1
]}

Wohlfeil, B. ^{[2
]}

Krueger, L. ^{[1
]}

Schulze, J. -H. ^{[1
]}

Heindel, T. ^{[1
]}

Burger, S. ^{[2
]}

Schmidt, F. ^{[2
]}

Strittmatter, A. ^{[1
]}

Rodt, S. ^{[1
]}

Reitzenstein, S. ^{[1
]}

机构：

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

[2] ZIB, D-14195 Berlin, Germany

来源：

NATURE COMMUNICATIONS | 2015年 / 6卷

关键词：

SINGLE PHOTONS; TELEPORTATION; ENTANGLEMENT; SPIN;

D O I：

10.1038/ncomms8662

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：

The success of advanced quantum communication relies crucially on non-classical light sources emitting single indistinguishable photons at high flux rates and purity. We report on deterministically fabricated microlenses with single quantum dots inside which fulfil these requirements in a flexible and robust quantum device approach. In our concept we combine cathodoluminescence spectroscopy with advanced in situ three-dimensional electron-beam lithography at cryogenic temperatures to pattern monolithic microlenses precisely aligned to pre-selected single quantum dots above a distributed Bragg reflector. We demonstrate that the resulting deterministic quantum-dot microlenses enhance the photon-extraction efficiency to (23 +/- 3)%. Furthermore we prove that such microlenses assure close to pure emission of triggered single photons with a high degree of photon indistinguishability up to (80 +/- 7)% at saturation. As a unique feature, both single-photon purity and photon indistinguishability are preserved at high excitation power and pulsed excitation, even above saturation of the quantum emitter.

引用

页数：8

共 38 条

[21]

JCMwave, 2015, JCMWAVE COMPL FIN EL

[22]

Juska G, 2013, NAT PHOTONICS, V7, P527, DOI [10.1038/NPHOTON.2013.128, 10.1038/nphoton.2013.128]

[23] Efficient out-coupling of high-purity single photons from a coherent quantum dot in a photonic-crystal cavity [J].

Madsen, K. H. ;

Ates, S. ;

Liu, J. ;

Javadi, A. ;

Albrecht, S. M. ;

Yeo, I. ;

Stobbe, S. ;

Lodahl, P. .

PHYSICAL REVIEW B, 2014, 90 (15)

[24] Integrated vertical microcavity using a nano-scale deformation for strong lateral confinement [J].

Mai, Lijian ;

Ding, Fei ;

Stoeferle, Thilo ;

Knoll, Armin ;

Offrein, Bert Jan ;

Mahrt, Rainer F. .

APPLIED PHYSICS LETTERS, 2013, 103 (24)

[25] Bright single photon source based on self-aligned quantum dot-cavity systems [J].

Maier, Sebastian ;

Gold, Peter ;

Forchel, Alfred ;

Gregersen, Niels ;

Mork, Jesper ;

Hoefling, Sven ;

Schneider, Christian ;

Kamp, Martin .

OPTICS EXPRESS, 2014, 22 (07) :8136-8142

[26] A quantum dot single-photon turnstile device [J].

Michler, P ;

Kiraz, A ;

Becher, C ;

Schoenfeld, WV ;

Petroff, PM ;

Zhang, LD ;

Hu, E ;

Imamoglu, A .

SCIENCE, 2000, 290 (5500) :2282-2285

[27]

Michler P, 2009, NANOSCI TECHNOL, P185, DOI 10.1007/978-3-540-87446-1_6

[28] Efficient source of single photons: A single quantum dot in a micropost microcavity [J].

Pelton, M ;

Santori, C ;

Vuckovic, J ;

Zhang, BY ;

Solomon, GS ;

Plant, J ;

Yamamoto, Y .

PHYSICAL REVIEW LETTERS, 2002, 89 (23) :1-233602

[29] Indistinguishable photons from a single-photon device [J].

Santori, C ;

Fattal, D ;

Vuckovic, J ;

Solomon, GS ;

Yamamoto, Y .

NATURE, 2002, 419 (6907) :594-597

[30] In(Ga)As/GaAs quantum dots grown on a (111) surface as ideal sources of entangled photon pairs [J].

Schliwa, Andrei ;

Winkelnkemper, Momme ;

Lochmann, Anatol ;

Stock, Erik ;

Bimberg, Dieter .

PHYSICAL REVIEW B, 2009, 80 (16)

← 1 2 3 4 →