Quantum Dot Single-Photon Generation

picoEmerald & pulseSlicer: Ultimate control of the emission process of quantum dots with a pulsed picosecond laser

Two key elements are required to realize a quantum dot single-photon source: a quantum dot emitter and appropriate control of the emission process.

Controlled single-photon generation “on demand”, i.e. by means of a trigger event, can be achieved by pulsed excitation of the single photon emitter. Picosecond (ps) lasers are particularly suitable for the pulsed excitation of quantum dots. Compared to femtosecond sourches, picosecond lasers are particularly narrow-band. They therefore enable resonant excitation of the QD emitter with very high efficiency and without disturbing background emissions.

The optimum degree of narrowness to achieve resonant excitation conditions depends on the properties of the individual quantum dot emitter system. And obviously, the resonant excitation of the QD system also depends on the center wavelength of the pulsed light source. Therefore, it can be seen as an advantage to use a pulsed and wavelength-tunable ps-source whose degree of narrowness is adjustable.

The combination of the tunable ps laser picoEmerald and the spectrum slicer (laser monochomator) pulseSlicer from APE offers this possibility and supports its customers in the field of quantum research.

Key Features

  • Small bandwidths because resonances in the sample are close to each other (selectivity)
  • Wavelength tunability of the picosecond laser to respond to different resonances
  • Wavelength tunability for spectroscopy (different resonances are addressed)
  • Two colors simultaniously available, overlapping in space and time
  • Variable bandwidths to optimally address resonances of different widths (realization with pulseSlicer)
  • High repetition rate for small time constants, since the relatively weak single-photon signals have to be accumulated over a large number of measurements
  • High spectral power density ( = small bandwidth) given by picosecond laser excitation
  • picoEmerald offers larger tuning range compared to Ti:Sa (1500 nm is not available with TiSa); a Ti:Sa in combination with an OPO would be possible, but the power density would be very low
  • Further wavelength tunability into the mid-infrared with the DFG from APE
  • Additional automation of the bandwidth (via the pulseSlicer) in combination with the picoEmerald

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Email & Phone Contacts

APE has distributors around the world to give you the best support. Choose a country to find your local sales contact:

APE Angewandte Physik & Elektronik GmbH
Plauener Strasse 163-165 | Haus N
13053 Berlin, Germany

Tel +49 30 986011-30
Fax +49 30 986011333

Sales: sales@ape-berlin.de
Support: service@ape-berlin.de

Coherent Scientific pty. Ltd.
Hilton SA 5033, South Australia

Phone: +61 8 8150 5200
Email: sales@coherent.com.au

Pinnacle Scientific Cooperation
Hangzhou, Jianggan District
China 310020

Phone +86 571 88225151
Email: sales@psci.cn

PulsePower Technology Ltd.
Beijing, Haidan District
China 100090

Phone +86 10 62565117
Email: mlu@pulsepower.cn

199 00 Praha 9, Česko

phone +420 212 247 293
Email: info@optixs.cz

Gammadata Instrument AB
750 02 Uppsala

Tel: +46 18 56 68 35
Email: jenny.lindvall@gammadatainstrument.se

F 92170 Vanves, France

Tel: +33 1 419 061 80
Email: info@optoprim.com

Laser Sciences Services Pvt. Ltd.

Tel: +91 2778 1673
Email: sales@laserscience.in

Photonic Solutions PLC
Edinburgh, UK

Tel: +44 131 664 8122
Email: sales@photonicsolutions.co.uk

Ammo Engineering Ltd.
Petach Tikva 49517, Israel

Tel: +972 3 9239 666
Email: ammo1@ammo.co.il

Optoprim Srl.

Via Rota, 37
20900 Monza (MB)
Phone: +39 (039) 834977
Email: info@optoprim.it

Via Monte Giberto, 15
00138 Roma
Phone: +39 06 87657838
Email: info@optoprim.it

Phototechnica Corporation
Saitama 336-0017, Japan

Tel: +81 48 871 0067
Email: voc@phototechnica.co.jp

Seoul 137-862, Korea

Tel: +82 2 3461 1103
Email: sales@rayvis.co.kr

Mexico City 03100, Mexico

Tel: 52(55) 5575-0312/0269/9929
Email: sales@mexitek.com

Eurotek International
02-668 Warsaw, Poland

Tel: +48 2284 379 40

Innova Scientific S.L.
28290 Las Rozas de Madrid, Espana

Tel: +34 91 7105650
Email: rafael.pereira@innovasci.com

AceXon Technologies Pte. Ltd.
Singapore 658065

Tel: +65 (6565) 7300
Email: lawrence.chua@acexon.com

Innova Scientific S.L.
28290 Las Rozas de Madrid

Tel: +34 91 7105650
Email: rafael.pereira@innovasci.com

Dyneos AG
CH-8307 Effretikon

Tel: +41 52 355 12 40
Email: info@dyneos.ch

SuperbIN Company Ltd.
Taipei 11493
Taiwan, R.O.C.

Tel: +886 2 265 706 78
Email: info@superbin.com.tw

Photonic Solutions PLC

Tel: +44 131 664 8122
Email: sales@photonicsolutions.co.uk

APE Applied Physics & Electronics, Inc.
47635 Lakeview Blvd.
Fremont, CA 94538, USA

Tel: +1(888) 690-3250
Email: sales@ape-america.com
Email: service@ape-america.com

Questions or Ideas?

Do not hesitate to contact us if you have questions or if you are looking for different specifications.

Our colleagues from R&D will be happy to dicuss your requirements in detail.