Varun Verma

Publications

Quantum Frequency Conversion of a Quantum Dot Single-Photon Source on a Nanophotonic Chip

May 20, 2019

Author(s):

Anshuman Singh, Qing Li, Shunfa Liu, Ying Yu, Xiyuan Lu, Christian Schneider, Sven Hofling, John R. Lawall, Varun B. Verma, Richard P. Mirin, Sae Woo Nam, Jin Liu, Kartik A. Srinivasan

Single self-assembled InAs/GaAs quantum dots are promising bright sources of indistinguishable photons for quantum information science. However, their...

Single self-assembled InAs/GaAs quantum dots in photonic nanostructures: the role of nanofabrication

June 13, 2018

Author(s):

Jin Liu, Kumarasiri Konthasinghe, Marcelo I. Davanco, John R. Lawall, Vikas Anant, Varun B. Verma, Richard P. Mirin, Jin Dong Song, Ben Ma, Ze Sheng Chen, Hai Qiao Ni, Zhi Chuan Niu, Kartik A. Srinivasan

Single self-assembled InAs/GaAs quantum dots are a promising solid-state quantum technology, with vacuum Rabi splitting, single-photon-level nonlinearities,...

Ultra-sensitive mid-infrared emission spectrometer using a WSi superconducting nanowire single-photon detector

June 11, 2018

Author(s):

Varun B. Verma, Martin J. Stevens, Richard P. Mirin, Sae Woo Nam, Li Chen, Dirk Schwarzer, Jascha A. Lau

We evaluate the performance of a mid-infrared emission spectrometer operating at wavelengths between 2 and 7 υm based on an amorphous tungsten silicide (a...

Heterogeneous integration for on-chip quantum photonic circuits with single quantum dot devices

October 12, 2017

Author(s):

Marcelo I. Davanco, Liu Jin, Luca Sapienza, Chen-Zhao Zhang, Jose Vinicius De Miranda Cardoso, Varun B. Verma, Richard P. Mirin, Sae Woo Nam, Liu Liu, Kartik A. Srinivasan

Photonic integration is establishing itself as an enabling technology for photonic quantum science, offering considerably greater scalability, stability, and...

UV-sensitive superconducting nanowire single photon detectors for integration in an ion trap

April 17, 2017

Author(s):

Daniel H. Slichter, Varun B. Verma, Dietrich G. Leibfried, Richard P. Mirin, Sae Woo Nam, David J. Wineland

We demonstrate superconducting nanowire single photon detectors with 76 +/- 4% system detection efficiency at a wavelength of 315 nm and an operating...