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Title: Operating single quantum emitters with a compact Stirling cryocooler

The development of an easy-to-operate light source emitting single photons has become a major driving force in the emerging field of quantum information technology. Here, we report on the application of a compact and user-friendly Stirling cryocooler in the field of nanophotonics. The Stirling cryocooler is used to operate a single quantum emitter constituted of a semiconductor quantum dot (QD) at a base temperature below 30 K. Proper vibration decoupling of the cryocooler and its surrounding enables free-space micro-photoluminescence spectroscopy to identify and analyze different charge-carrier states within a single quantum dot. As an exemplary application in quantum optics, we perform a Hanbury-Brown and Twiss experiment demonstrating a strong suppression of multi-photon emission events with g{sup (2)}(0) < 0.04 from this Stirling-cooled single quantum emitter under continuous wave excitation. Comparative experiments performed on the same quantum dot in a liquid helium (LHe)-flow cryostat show almost identical values of g{sup (2)}(0) for both configurations at a given temperature. The results of this proof of principle experiment demonstrate that low-vibration Stirling cryocoolers that have so far been considered exotic to the field of nanophotonics are an attractive alternative to expensive closed-cycle cryostats or LHe-flow cryostats, which could pave the way for themore » development of high-quality table-top non-classical light sources.« less
Authors:
; ; ; ; ; ; ;  [1]
  1. Institute of Solid State Physics, Technische Universität Berlin, 10623 Berlin (Germany)
Publication Date:
OSTI Identifier:
22392310
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 86; Journal Issue: 1; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; CHARGE CARRIERS; CRYOSTATS; EXCITATION; HELIUM; LIGHT SOURCES; MULTI-PHOTON PROCESSES; PHOTOLUMINESCENCE; PHOTONS; QUANTUM DOTS; QUANTUM INFORMATION; QUANTUM OPTICS; SEMICONDUCTOR MATERIALS; SPECTROSCOPY