Department of Physics Colloquium

Guest speaker: Feihu Xu Research Laboratory of Electronics Massachusetts Institute of Technology
Thursday, 8 June 2017 - 2:30 pm to 3:30 pm
Off-campus address: 
25 Templeton St, room 233
Registration required: 
Cost to attend: 
Free of charge
Event organizer: 
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Title: Quantum Communication and Imaging with Photons

Abstract:  Quantum technology is believed to the second revolution of information processing. In this talk, I will present two important advances in quantum information processing: quantum communication and quantum imaging. (i) Quantum communication can provide unconditional security for data transmission. This is the technology at the basis of the quantum satellite launched recently by China. In the first part, I will present our theoretical and experimental developments in quantum cryptography, including measurement-device-independent quantum key distribution (MDI-QKD), Si photonic-chip based QKD and quantum random number generator (QRNG). (ii) Quantum imaging involves the detection and timing of single photons to beat classical limits. In the second part, I will address how to perform accurate 3D imaging with a single-photon camera at a light level of one photon per pixel. Our novel photon-efficient imaging systems can allow us to achieve long-range dynamic sensing, see around corners and push the limits of imaging technology in widespread applications.

**Refreshments will be served at 2:00 p.m. (BEFORE the seminar) in room ARC 233