#  Peter Lodahl: Joint Quantum Sciences Seminar 

 



####  calendar\_today Date and Time 

 **November 28, 2018** 

 04:00PM - 06:00PM EST 

####  pin\_drop Location 

 **Jefferson 250, 17 Oxford Street, Cambridge MA**  



 

 



 

 Semiconductor quantum dots have improved their optical performance dramatically in recent years, and today a clear pathway is laid out for constructing a deterministic and coherent photon-emitter interface by embedding quantum dots in photonic nanostructures \[1\]. Such an interface can be employed as an on-demand single-photon source for quantum- information applications, but more generally enables single-photon nonlinearities and deterministic quantum gates \[2\]. We will review the recent experimental progress on quantum dots coupled to nanophotonic waveguides and cavities as a mean to engineer light- matter interaction. We discuss current status on efficiency, coherence \[3,4\] and brightness \[5\], as well as the fundamental limits of photon indistinguishability \[6,7\]. Various potential quantum-information processing protocols are put forward that exploits the deterministic photon-emitter interface for single-photon nonlinear optics and spin physics. Finally, the experimental demonstration of a photonic switched controlled by a single spin coupled to a waveguide is discussed \[8\].

 References

 \[1\] Lodahl et al., Rev. Mod. Phys. 87, 347 (2015). \[2\] Lodahl, Quantum Science and Technology 3, 013001 (2018). \[3\] Kirsanske et al., Phys. Rev. B 96, 165306 (2017). \[4\] Thyrrestrup et al., Nano Letters 18, 1801 (2018). \[5\] Daveau et al., Optica 4, 178 (2017). \[6\] Tighineanu et al., Phys. Rev. Lett. 120, 257401 (2018). \[7\] Dreessen et al., Quantum Science and Technology 4, 015003 (2019). \[8\] Javadi et al., Nature Nanotechnology 13, 398 (2018).



 

 

---

 Attachments- [  picture\_as\_pdf  plodahlflyernov2018.pdf ](/sites/g/files/omnuum7841/files/plodahlflyernov2018.pdf)
 
---

 



 

 See also:- [ Joint Quantum Sciences Seminars ](/seminars/joint-quantum-sciences-seminar)
- [ JQS/ITAMP/MPHQ Seminars ](/seminars/jqsitamp-seminars)
 
 

 Share on:- [     Facebook ](#)
- [     Twitter ](#)
- [     Linkedin ](#)
 


 Save: [ Add to calendar calendar\_today ](https://mphq.physics.harvard.edu/node/1328738/event-feed.ics)  Copy link link