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DESCRIPTION:A quantum light source is a device that can generate one single
  photon - or an entangled pair of photons - on demand. Whilst a single pho
 ton emitter would be pretty useless as a car headlight or bedside lamp\, t
 hese devices are in increasing demand for new developments in optical comm
 unication which might exploit fundamental principles of quantum physics to
  achieve data security. Linear optical quantum computation\, precision opt
 ical measurement and even random number generation also present potential 
 applications opportunities for such light sources.\n\nHowever\, many of th
 e most mature quantum light sources operate at temperatures only accessibl
 e using liquid helium\, at best inconvenient and at worst prohibitive for 
 applications. Exploiting nitride semiconductors allows device concepts dev
 eloped in the more conventional arsenide semiconductor family to be applie
 d\, but whilst arsenide devices are limited to cryogenic temperatures\, ni
 tride devices can operate at temperatures accessible using on-chip\, Pelti
 er cooling\, and in some cases even at room temperature.\n\nUnfortunately\
 , working with these less mature semiconductors has its pitfalls: high den
 sities of defects and the impact of internal electric fields can limit dev
 ice performance. For example\, the wavelength of emission from nitride sin
 gle photon emitters wanders with time\, which is not compatible with appli
 cations which demand resonance of the emitter with a cavity or (more strin
 gently) the emission of indistinguishable photons. Nitrides crystals grown
  in unusual orientations can overcome these challenges whilst maintaining 
 good temperature stability\, providing new opportunities for real-world qu
 antum technologies.\n\nSpeaker(s): Rachel Oliver\, \n\nSanta Clara\, Calif
 ornia\, United States\, Virtual: https://events.vtools.ieee.org/m/312553
LOCATION:Santa Clara\, California\, United States\, Virtual: https://events
 .vtools.ieee.org/m/312553
ORGANIZER:stliu.photonics@gmail.com
SEQUENCE:0
SUMMARY:Nitrides for quantum light sources
URL;VALUE=URI:https://events.vtools.ieee.org/m/312553
X-ALT-DESC:Description: <br /><p>A quantum light source is a device that ca
 n generate one single photon - or an entangled pair of photons - on demand
 . Whilst a single photon emitter would be pretty useless as a car headligh
 t or bedside lamp\, these devices are in increasing demand for new develop
 ments in optical communication which might exploit fundamental principles 
 of quantum physics to achieve data security. Linear optical quantum comput
 ation\, precision optical measurement and even random number generation al
 so present potential applications opportunities for such light sources.<br
  /><br />However\, many of the most mature quantum light sources operate a
 t temperatures only accessible using liquid helium\, at best inconvenient 
 and at worst prohibitive for applications. Exploiting nitride semiconducto
 rs allows device concepts developed in the more conventional arsenide semi
 conductor family to be applied\, but whilst arsenide devices are limited t
 o cryogenic temperatures\, nitride devices can operate at temperatures acc
 essible using on-chip\, Peltier cooling\, and in some cases even at room t
 emperature.<br /><br />Unfortunately\, working with these less mature semi
 conductors has its pitfalls: high densities of defects and the impact of i
 nternal electric fields can limit device performance. For example\, the wa
 velength of emission from nitride single photon emitters wanders with time
 \, which is not compatible with applications which demand resonance of the
  emitter with a cavity or (more stringently) the emission of indistinguish
 able photons. Nitrides crystals grown in unusual orientations can overcome
  these challenges whilst maintaining good temperature stability\, providin
 g new opportunities for real-world quantum technologies.</p>
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