title: H1 photonic crystal cavities for hybrid quantum information protocols.
abstract: Hybrid quantum information protocols are based on local qubits, such as trapped atoms, NV centers, and quantum dots, coupled to photons. The coupling is achieved through optical cavities. Here we demonstrate far-field optimized H1 photonic crystal membrane cavities combined with an additional back reflection mirror below the membrane that meet the optical requirements for implementing hybrid quantum information protocols. Using numerical optimization we find that 80% of the light can be radiated within an objective numerical aperture of 0.8, and the coupling to a single-mode fiber can be as high as 92%. We experimentally prove the unique external mode matching properties by resonant reflection spectroscopy with a cavity mode visibility above 50%.
authors.affiliation: Physics Department, University of California Santa Barbara, Santa Barbara, California 93106, USA. jenna@physics.ucsb.edu
authors.forename: Jenna
authors.initials: J
authors.lastname: Hagemeier
authors.forename: Cristian
authors.initials: C
authors.lastname: Bonato
authors.forename: Tuan-Anh
authors.initials: TA
authors.lastname: Truong
authors.forename: Hyochul
authors.initials: H
authors.lastname: Kim
authors.forename: Gareth J
authors.initials: GJ
authors.lastname: Beirne
authors.forename: Morten
authors.initials: M
authors.lastname: Bakker
authors.forename: Martin P
authors.initials: MP
authors.lastname: van Exter
authors.forename: Yunqiu
authors.initials: Y
authors.lastname: Luo
authors.forename: Pierre
authors.initials: P
authors.lastname: Petroff
authors.forename: Dirk
authors.initials: D
authors.lastname: Bouwmeester