IQIM Postdoctoral and Graduate Student Seminar

Friday November 4, 2016 4:00 PM

Rare-earth ions in crystals for integrating quantum resources

Speaker: John Bartholomew, Faraon Group
Location: East Bridge 114

Abstract: Quantum technology that surpasses any possible classical counterpart will likely require a scalable platform that enables the large scale integration of entangled qubits. Crystals containing rare-earth ions are one system that possesses many appealing attributes to facilitate such large scale quantum integration. These attributes include optically accessible spins with long coherence times (up to 6 hours [1] ), demonstrated performance as photonic quantum memories [2,3], and their potential for single-spin qubits [4] and on-chip photonic platforms [5].  

In this seminar I will introduce the solid-state rare-earth ion system and highlight its appeal for creating a versatile platform for integrating quantum resources. I will then focus on some of the work being undertaken in the Faraon group to engineer the properties of rare-earth ions in crystals using nanophotonic resonators. These photonic crystal cavities provide significant miniaturization and enhancement of the rare-earth system, providing a route toward integrated on-chip quantum devices.

[1] Zhong et al., Nature, 517(7533), 2015.

[2] Hedges et al., Nature, 465(7301), 2010.

[3] Jobez et al., Phys. Rev. Lett., 114(23), 230502, 2015. 

[4] Siyushev et al., Nat. Commun., 5, 3895, 2014.

[5] Zhong et al., Nat. Commun., 6, 8206, 2015.

Series IQIM Postdoctoral and Graduate Student Seminar Series

Contact: Marcia Brown at 626-395-4013 marciab@caltech.edu