Quantum light-matter interactions: sensing, communications, and information processing - 4Virtual room: COPL - 5
|Wednesday, May 27|
QT-4-27-1 / Single-Photon Source, Detector and Component Characterization for future Quantum Networks
* Thomas Gerrits, National Institute of Standards and Technology Gaithersburg MD, United States
Alan Migdall, National Institute of Standards and Technology Gaithersburg MD
Oliver Slattery, National Institute of Standards and Technology Gaithersburg MD
Josh Bienfan, National Institute of Standards and Technology Gaithersburg MD
John Lehman, National Institute of Standards and Technology Boulder CO
Sae Woo Nam, National Institute of Standards and Technology Boulder CO
Igor Vayshenker, National Institute of Standards and Technology Boulder CO
Future Optical Quantum Networks will need components based on photonic quantum technologies and those components will require characterization. Therefore, robust, accurate, and convenient tools for characterization of the network, the transmitted input states and characterization of the component responding to an input state are prerequisites.
QT-4-27-2 / Time-stamping and counting of single photons using fast camera
* Andrei Nomerotski, Brookhaven National Laboratory, United States
I will discuss fast optical cameras based on the back-illuminated silicon sensor and Timepix3 ASIC. The sensor has high quantum efficiency and the chip provides nanosecond scale resolution and data-driven readout with 80Mpix/sec bandwidth. The intensified version of the camera is single photon sensitive and since recently has been used for registration of single photons in a variety of quantum information science and quantum imaging experiments as well as for other applications. We briefly review the camera and describe recent experiments with a Hong-Ou-Mandel interferometer to characterize its photon counting capabilities.
QT-4-27-3 / Spectro-temporal multiplexing for enhanced quantum sensing
* Yingwen Zhang, National Research Council Canada, Canada
Duncan England, National Research Council Canada
Andrei Nomerotski, Brokhaven National Laboratory
Peter Svihra, Czech Technical University
Steven Ferrante, Brookhaven National Laboratory
Paul Hockett, National Research Council Canada
Benjamin Sussman, National Research Council Canada
In this work we investigate quantum-enhanced target detection in the presence of large background noise using multidimensional quantum correlations between photon pairs generated through spontaneous parametric down-conversion. Here, we utilized both temporal and spectral correlations of the photon pairs and achieved over an order of magnitude reduction to the background noise and in turn an order of magnitude reduction to data acquisition time when compared to utilizing only temporal modes. We believe this work represents an important step in realizing a practical, real-time quantum-enhanced target detection system. The demonstrated technique will also be of importance in many other quantum sensing applications and quantum communications.