2016
2016
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Record 25 of
Title:A discriminative representation for human action recognition
Author(s):Yuan, Yuan(1); Zheng, Xiangtao(1,2); Lu, Xiaoqiang(1)Source: Pattern Recognition Volume: 59 Issue: DOI: 10.1016/j.patcog.2016.02.022 Published: November 1, 2016Abstract:Action recognition has been standing as an active research topic over the past years. Many efforts have been made and many methods have been proposed. However, there are still some challenges such as illumination condition, viewpoint, camera motion and cluttered background. In order to tackle these challenges, a discriminative representation is proposed by discovering key information of the input data. This task can be addressed by improvements of two major components: parameterized representation and discriminative classifier. The representation is parameterized with hidden variables and can be learned from training data. And the classifier can be trained to recognize actions based on the proposed representation. The contributions of this paper are as follows: (1) a novel probabilistic representation is utilized to capture the relative significant information of low level features; (2) a novel framework is proposed by combining the parameterized representation and discriminative classifier; (3) an alternating strategy is favorable to improve the performance of action recognition by updating the representation and the classifier alternatively. Experimental results on five well-known datasets demonstrate that the proposed method significantly improves the performance in action recognition. ? 2016 Elsevier LtdAccession Number: 20161302145233 -
Record 26 of
Title:Application of Grey Model GM(1, 1) to Ultra Short-Term Predictions of Universal Time
Author(s):Lei, Yu(1,2,3); Guo, Min(4); Zhao, Danning(1,3); Cai, Hongbing(1,2); Hu, Dandan(4)Source: Artificial Satellites Volume: 51 Issue: 1 DOI: 10.1515/arsa-2016-0002 Published: March 1, 2016Abstract:A mathematical model known as one-order one-variable grey differential equation model GM(1, 1) has been herein employed successfully for the ultra short-term ( ? 2016 Artificial Satellites.Accession Number: 20161002066673 -
Record 27 of
Title:Two-photon multi-correlated states from an on-chip bi-modal micro-cavity
Author(s):Kues, Michael(1); Reimer, Christian(1); Wetzel, Benjamin(1); Roztocki, Piotr(1); Grazioso, Fabio(1); Caspani, Lucia(1,2); Bromberg, Yaron(3); Little, Brent E.(4); Munro, William J.(5); Chu, Sai T.(6); Moss, David J.(1,7); Morandotti, Roberto(1)Source: Optics InfoBase Conference Papers Volume: Issue: DOI: 10.1364/LAOP.2016.LTh2B.3 Published: August 15, 2016Abstract:We show the generation of two-photon multi-correlated states over four modes and their pairwise entanglement by superimposing two different spontaneous four-wave mixing processes exploiting a bi-modally pumped CMOS-compatible microring resonator. ? OSA 2016.Accession Number: 20171503549320 -
Record 28 of
Title:Four Mode Multi-correlated Bi-Photon States within an Integrated Quantum Frequency Comb
Author(s):Kues, Michael(1); Reimer, Christian(1); Wetzel, Benjamin(1); Roztocki, Piotr(1); Caspani, Lucia(1,2); Bromberg, Yaron(3); Little, Brent E.(4); Munro, William J.(5); Chu, Sai T.(6); Moss, David J.(1,7); Morandotti, Roberto(1)Source: Optics InfoBase Conference Papers Volume: Issue: DOI: Published: 2016Abstract:The generation of two-photon multi-correlated states over four modes and their pairwise entanglement is demonstrated by superimposing two different spontaneous four-wave mixing processes inside a bi-modally pumped CMOS-compatible microring resonator. ? OSA 2016.Accession Number: 20223512636582 -
Record 29 of
Title:On-chip frequency comb of entangled qubits
Author(s):Kues, Michael(1); Reimer, Christian(1); Roztocki, Piotr(1); Wetzel, Benjamin(1,2); Grazioso, Fabio(1); Bromberg, Yaron(3); Little, Brent E.(4); Chu, Sai T.(5); Moss, David J.(6); Caspani, Lucia(1,7); Morandotti, Roberto(1)Source: Optics InfoBase Conference Papers Volume: Issue: DOI: 10.1364/LAOP.2016.LTu2D.4.pdf Published: August 15, 2016Abstract:We show the generation of multiple time-bin entangled qubits, with high purity and covering the entire L, C, and S telecommunication bands. This is achieved using spontaneous four-wave mixing within an on-chip micro-resonator. ? OSA 2016.Accession Number: 20171503549401 -
Record 30 of
Title:Integrated quantum frequency comb source of entangled qubits
Author(s):Reimer, Christian(1); Kues, Michael(1); Roztocki, Piotr(1); Wetzel, Benjamin(1,2); Bromberg, Yaron(3); Little, Brent E.(4); Chu, Sai T.(5); Moss, David J.(6); Caspani, Lucia(1,7); Morandotti, Roberto(1)Source: 2016 Conference on Lasers and Electro-Optics, CLEO 2016 Volume: Issue: DOI: 10.1364/cleo_qels.2016.fth4a.3 Published: December 16, 2016Abstract:We demonstrate the simultaneous generation of multiple time-bin entangled photon pairs on a CMOS-compatible photonic chip. We measure quantum interference and perform state tomography, confirming entangled qubits with fidelities above 86% and 99.9% purity. ? 2016 OSA.Accession Number: 20170503299673 -
Record 31 of
Title:Multi-correlated two-photon states from a Bi-modal integrated frequency comb source
Author(s):Kues, Michael(1); Reimer, Christian(1); Wetzel, Benjamin(1); Roztocki, Piotr(1); Grazioso, Fabio(1); Caspani, Lucia(1,2); Bromberg, Yaron(3); Little, Brent E.(4); Munro, William J.(5); Chu, Sai T.(6); Moss, David J.(1,7); Morandotti, Roberto(1)Source: Optics InfoBase Conference Papers Volume: Issue: DOI: 10.1364/iprsn.2016.iw3a.3 Published: 2016Abstract:Exploiting a bi-modally pumped CMOS-compatible microring resonator, we superimpose two different spontaneous four-wave mixing processes and demonstrate the generation of two-photon multi-correlated states over four modes and their pairwise entanglement. ? OSA 2016.Accession Number: 20171403515614 -
Record 32 of
Title:Generation of multiple entangled qubits from an integrated frequency comb source
Author(s):Reimer, Christian(1); Kues, Michael(1); Roztocki, Piotr(1); Wetzel, Benjamin(1,2); Bromberg, Yaron(3); Little, Brent E.(4); Chu, Sai T.(5); Moss, David J.(6); Caspani, Lucia(1,7); Morandotti, Roberto(1)Source: Optics InfoBase Conference Papers Volume: Issue: DOI: 10.1364/iprsn.2016.iw3a.4 Published: 2016Abstract:Exploiting spontaneous four-wave mixing within an integrated CMOS-compatible microring resonator, we demonstrate the simultaneous generation of multiple time-bin entangled photon pairs, confirmed by quantum interference and state tomography with fidelities above 86%. ? OSA 2016.Accession Number: 20171403515615 -
Record 33 of
Title:Integrated Quantum Frequency Comb Source of Entangled Qubits
Author(s):Reimer, Christian(1); Kues, Michael(1); Roztocki, Piotr(1); Wetzel, Benjamin(1,2); Bromberg, Yaron(3); Little, Brent E.(4); Chu, Sai T.(5); Moss, David J.(6); Caspani, Lucia(1,7); Morandotti, Roberto(1)Source: Optics InfoBase Conference Papers Volume: Issue: DOI: Published: 2016Abstract:We demonstrate the simultaneous generation of multiple time-bin entangled photon pairs on a CMOS-compatible photonic chip. We measure quantum interference and perform state tomography, confirming entangled qubits with fidelities above 86% and 99.9% purity. ? OSA 2016.Accession Number: 20223512637013 -
Record 34 of
Title:Four mode multi-correlated bi-photon states within an integrated quantum frequency comb
Author(s):Kues, Michael(1); Reimer, Christian(1); Wetzel, Benjamin(1); Roztocki, Piotr(1); Caspani, Lucia(1,2); Bromberg, Yaron(3); Little, Brent E.(4); Munro, William J.(5); Chu, Sai T.(6); Moss, David J.(1,7); Morandotti, Roberto(1)Source: 2016 Conference on Lasers and Electro-Optics, CLEO 2016 Volume: Issue: DOI: 10.1364/cleo_qels.2016.ff2c.8 Published: December 16, 2016Abstract:The generation of two-photon multi-correlated states over four modes and their pairwise entanglement is demonstrated by superimposing two different spontaneous four-wave mixing processes inside a bi-modally pumped CMOS-compatible microring resonator. ? 2016 OSA.Accession Number: 20170503299846 -
Record 35 of
Title:Generation of multi-photon entangled states with integrated optical frequency comb sources
Author(s):Reimer, Christian(1); Kues, Michael(1); Roztocki, Piotr(1); Caspani, Lucia(1,2); Bromberg, Yaron(3); Wetzel, Benjamin(1,4); Little, Brent E.(5); Chu, Sai T.(6); Moss, David J.(7); Morandotti, Roberto(1)Source: Optics InfoBase Conference Papers Volume: Issue: DOI: 10.1364/FIO.2016.FW3F.2 Published: 2016Abstract:We demonstrate that four-photon entangled qubit states can be generated from an optical frequency combs source. This state generation is evidenced by four-photon quantum interference, and quantum state tomography reveals a fidelity above 64%. ? OSA 2016.Accession Number: 20171503547653 -
Record 36 of
Title:Microwave and RF applications for micro-resonator based frequency combs
Author(s):Nguyen, Thach G.(1); Shoeiby, Mehrdad(1); Ferrera, Marcello(2); Pasquazi, Alessia(3); Peccianti, Marco(3); Chu, Sai T.(4); Little, Brent E.(5); Morandotti, Roberto(6); Mitchell, Arnan(1); Moss, David J.(7)Source: Proceedings of SPIE - The International Society for Optical Engineering Volume: 9750 Issue: DOI: 10.1117/12.2218883 Published: 2016Abstract:Photonic integrated circuits that exploit nonlinear optics in order to generate and process signals all-optically have achieved performance far superior to that possible electronically - particularly with respect to speed. We review the recent achievements based in new CMOS-compatible platforms that are better suited than SOI for nonlinear optics, focusing on radio frequency (RF) and microwave based applications that exploit micro-resonator based frequency combs. We highlight their potential as well as the challenges to achieving practical solutions for many key applications. These material systems have opened up many new capabilities such as on-chip optical frequency comb generation and ultrafast optical pulse generation and measurement. We review recent work on a photonic RF Hilbert transformer for broadband microwave in-phase and quadrature-phase generation based on an integrated frequency optical comb. The comb is generated using a nonlinear microring resonator based on a CMOS compatible, high-index contrast, doped-silica glass platform. The high quality and large frequency spacing of the comb enables filters with up to 20 taps, allowing us to demonstrate a quadrature filter with more than a 5-octave (3 dB) bandwidth and an almost uniform phase response. ? 2016 SPIE.Accession Number: 20163302717699