High-efficiency shallow-etched grating on GaAs membranes for quantum photonic applications

TY - JOUR

T1 - High-efficiency shallow-etched grating on GaAs membranes for quantum photonic applications

AU - Zhou, Xiaoyan

AU - Kulkova, Irina

AU - Lund-Hansen, Toke

AU - Hansen, Sofie Lindskov

AU - Lodahl, Peter

AU - Midolo, Leonardo

PY - 2018/12/17

Y1 - 2018/12/17

N2 - We have designed and fabricated a shallow-etched grating on gallium arsenide nanomembranes for efficient chip-to-fiber coupling in quantum photonic integrated circuits. Experimental results show that the grating provides a fiber-coupling efficiency of >60%, a greatly suppressed back reflection of <1% for the designed wavelength of 930 nm, and a 3-dB bandwidth of >43 nm. Highly efficient single-photon collection from embedded indium arsenide quantum dots to an optical fiber was realized with the designed grating, showing an average six-fold increase in the photon count compared to commonly used circular gratings, offering an efficient interface for on-chip quantum information processing.

AB - We have designed and fabricated a shallow-etched grating on gallium arsenide nanomembranes for efficient chip-to-fiber coupling in quantum photonic integrated circuits. Experimental results show that the grating provides a fiber-coupling efficiency of >60%, a greatly suppressed back reflection of <1% for the designed wavelength of 930 nm, and a 3-dB bandwidth of >43 nm. Highly efficient single-photon collection from embedded indium arsenide quantum dots to an optical fiber was realized with the designed grating, showing an average six-fold increase in the photon count compared to commonly used circular gratings, offering an efficient interface for on-chip quantum information processing.

U2 - 10.1063/1.5055622

DO - 10.1063/1.5055622

M3 - Journal article

SN - 0003-6951

VL - 113

JO - Applied Physics Letters

JF - Applied Physics Letters

M1 - 251103

ER -