Quantum Optoelectronics Group

Patents:

1. Xiulai Xu and David A Williams, Photodetector relying on phonon detection, EP2224497 (2010)

2. Xiulai Xu and David A Williams, Single-photon source, EP2202550 (2010)

Book chapter:

Xiulai Xu, Aleksey Andreev and David A Williams, ‘Quantum Coupling in Quantum Dot Molecules’, in Self-Assembled Quantum Dots. Springer, Chapter 8, (2008) P 239

Main papers:

1, J. D. Mar, X. L. Xu, J. J. Baumberg, A. C. Irvine, C. Stanley, and D. A. Williams, Electrically-tunable hole tunnelling from a single self-assembled quantum dot embedded in an n-i-Schottky photovoltaic cell, APPLIED PHYSICS LETTERS, 99,031102 (2011);

2. J. D. Mar, X. L. Xu, J. J. Baumberg, A. C. Irvine, C. Stanley, and D. A. Williams, Voltage-controlled electron tunnelling from a single self-assembled quantum dot embedded in a two-dimensional-electron-gas-based photovoltaic cell. JOURNAL OF APPLIED PHYSICS. 110, 053110 (2011);

3. J. D. Mar, X. L. Xu, J. J. Baumberg, F. S. F. Brossard, A. C. Irvine, C. Stanley, and D. A. Williams, Bias-controlled single-electron charging of a self-assembled quantum dot in a two-dimensional-electron-gas-based n-i-Schottky diode, Phys. Rev. B 83, 075306 (2011); 10.1103/PhysRevB.83.075306, Editors’Suggestion.

4. J. D. Mar, X. L. Xu, J. S. Sandhu, A. C. Irvine, M. Hopkinson, and D. A. Williams, Electrical Control of Fine-Structure Splitting in Self-Assembled Quantum Dots for Entangled Photon Pair Creation, APPLIED PHYSICS LETTERS, 97, 221108 (2010); doi:10.1063/1.3522655

5. Xiulai Xu, Andrew C. Irvine, Yang Yang, Xitian Zhang, and David A. Williams, Coulomb Oscillations of Indium-doped ZnO Nanowire Transistors in A Magnetic Field, Physical Review B 82, 195309 (2010)

6. Xiulai Xu, Frederic Brossard, David A. Williams, Daniel Collins, Mark Holmes, Robert A Taylor, Xitian Zhang, Cavity modes of tapered ZnO nanowires, NEW JOURNAL OF PHYSICS 12, 083052 (2010)

7. F.S.F. Brossard, Xiulai Xu (co-first author), D.A. Williams, M. Hadjipanayi, Mark Hopkinson and R.A. Taylor, Strongly coupled single quantum dot in a photonic crystal waveguide cavity, APPLIED PHYSICS LETTERS 97, 111101 (2010)

---News on Physorg.com: http://www.physorg.com/news206011053.html;

--- One of most downloaded papers (Second) in September 2010 of APL: http://apl.aip.org/features/most_downloaded?month=9&year=2010

8. Xiulai Xu, Hugh Baker, and David A. Williams, Highly sensitive, photon number resolved detection mediated by phonons using δ-doped GaAs, NANO LETTERS. 10, 1364 (2010)

9. X. H. Yang, Xiulai Xu, X. P. Wang, H. Q. Ni, Q. Han, Z. C. Niu and D. A. Williams,Optically controlled quantum dot gated transistors with high on/off ratio, 10.1063/1.3323101 Applied Physics Letters 96, 083503 (2010)

10. Xiulai Xu, Frederic Brossard, David A. Williams, Daniel Collins, Mark Holmes, Robert A Taylor, Xitian Zhang, Mapping cavity modes of ZnO nanobelts, APPLIED PHYSICS LETTERS, 94, 231103 (2009)

---One of most downloaded papers in June 2009 of APL: http://apl.aip.org/features/most_downloaded?month=6&year=2009

11. J. Wunderlich, A. C. Irvine, Jairo Sinova, B. G. Park, Xiulai Xu, B. Kaestner, V. Novak, and T. Jungwirth, Spin-injection Hall effect in a planar photovoltaic cell, NATURE PHYSICS 5, 675 (2009) (arXiv:0811.3486).

---View of the paper: http://www.nature.com/nphys/journal/v5/n9/full/nphys1387.html

12. Xiulai Xu, Frederic Brossard, Kiyotaka Hammura, David A. Willliams, B. Alloing, L. H. Li and Andrea Fiore, `Plug and play' single photons at 1.3 μm approaching GHz operation, APPLIED PHYSICS LETTERS 93, 021124 (2008).

13. Xiulai Xu, Aleksey Andreev and David A Williams, Manipulating quantum-confined Stark shift in electroluminescence from quantum dots with side gates, NEW JOURNAL PHYSICS 10, 053036 (2008).

14. Xiulai Xu, Ian Toft, Richard T. Phillips, Jonathan Mar, Kiyotaka Hammura and David A. Williams, ‘Plug and play’ single-photon sources, APPLIED PHYSICS LETTERS 90, 061103 (2007).

---News on Physorg.com: http://www.physorg.com/news93186595.html;

---The most downloaded paper in Feb 2007 of APL: http://apl.aip.org/features/most_downloaded?month=2&year=2007

15. Xiulai Xu, David A. Williams, and John R. A. Cleaver, Electroluminescence from coupled InGaAs/GaAs quantum dots embedded in lateral p-i-n junctions, APPLIED PHYSICS LETTERS 89, 091120 (2006).

16. Xiulai Xu, David A. Williams, and John R. A. Cleaver, Splitting of excitons and biexcitons in coupled InAs quantum dot molecules, APPLIED PHYSICS LETTERS 86, 012103 (2005).

17. Xiulai Xu, David A. Williams, and John R. A. Cleaver, Electrically pumped single-photon sources in lateral p-i-n junction, APPLIED PHYSICS LETTERS 85, 3238 (2004).

18. Xiulai Xu, S. P. Lau, J. S. Chen, et al. Polycystalline ZnO thin films on Si(100) deposited by filtered cathodic vacuum arc. JOURNAL CRYST GROWTH 223, 201 (2001). [Cited more than 100 times]

19. Xiulai Xu, Z. Xu, Y. B. Hou, et al. Ultraviolet-blue electroluminescence from Gd3Ga5O12:Ag, APPLIED PHYSICS LETTERS 77 (5), 672 (2000).

20. Xiulai Xu, X. H. Chen, Y. B. Hou, et al., Blue electroluminescence from tris-(8-hydroxyquinoline) aluminum thin film, CHEMICAL PHYSICS LETTERS 325 (4), 420 (2000).

Invited talks:

1. Single-charge control of a self-assembled quantum dot in a two-dimensional-electron-gas-based n-i-Schottky diode BIT' s 1st Annual World Congress of Nano-S&T Dalian, 2011

2. Single charge control for quantum information processing Invited talk, Virtual Conference on Nanoscale Science and Technology, Chengdu,China 2011

3.‘Plug and play’ single photon sources at 1.3 μm approaching GHz operation, The International Conference on Superlattices, Nanostructures and Nanodevices (ICSNN), Natal, Brazil 2008

4. Semiconductor quantum dots for quantum information processing, Conference on Optical Properties of Condense Matter (OPCM), Qingdao, China, 2008

5. InGaAs quantum dots for optical quantum information processing, International symposium on the recently progress in optical spectroscopy and its applications, Hong Kong 2007

6. Quantum dots for quantum information processing, 13th International conference on semiconducting and insulating materials, Beijing, China 2004

Main papers:

6, Jonathan D. Mar, Jeremy J. Baumberg, Xiulai Xu, Andrew C. Irvine, and David A. Williams, Ultrafast high-fidelity initialization of a quantum-dot spin qubit without magnetic fields, Phys. Rev. B 90, 241303(R), (2014).

5, Shuo Cao and Xiulai Xu, Microcavity enhanced single-photon emission from single semiconductor quantum dots, Physics, Vol. 43 Issue (11): 740-748 (2014).

4, Jing Tang, Shuo Cao, Yunan Gao, Yue Sun, Weidong Geng, David A. Williams, Kuijuan Jin and Xiulai Xu, Charge state control in single InAs/GaAs quantum dots by external electric and magnetic fields, Appl. Phys. Lett. 105, 041109 (2014).

3, Kangsheng Qiu, Yanhui Zhao, Baohua Feng and Xiulai Xu, Whispering gallery modes in a bent ZnO microwire, Acta Physica Sinica, 2014, Vol. 63 Issue (17): 177802.

2, JI Xiao-Fan, XU Zheng, CAO Shuo, QIU Kang-Sheng, TANG Jing, ZHANG Xi-Tian and XU Xiu-Lai, Single-ZnO-Nanobelt Based Single-Electron Transistors, Chin. Phys. Lett., 2014, 31(06): 067303.

1, Kangsheng Qiu, Yanhui Zhao, Yunan Gao, Xiangbo Liu, Xiaofan Ji, Shuo Cao, Jing Tang,Yue Sun, Dongxiang Zhang, Baohua Feng, and Xiulai Xu, Refractive index of a single ZnO microwire at high temperatures, APPLIED PHYSICS LETTERS 104, 081109 (2014).

Main papers:

7, Hassan Ali, Usman Khan, M. A. Rafiq, Attia Falak, Adeela Narain, Tang Jing, and Xiulai Xu, Richardson-Schottky transport mechanism in ZnS nanoparticles, AIP Advances 6, 055306 (2016).

6, Wenpeng Hou, Ning-Jiu Zhao, Dongli Meng, Jing Tang, Yi Zeng, Yu Wu, Yangziwan Weng, Chungui Cheng, Xiulai Xu, Yi Li, Jian-Ping Zhang, Yong Huang, Christopher W. Bielawski, and Jianxin Geng , Controlled Growth of Well-Defined Conjugated Polymers from the Surfaces of Multiwalled Carbon Nanotubes: Photoresponse Enhancement via Charge Separation, ACS NANO DOI: 10.1021/acsnano.6b00673 (2016).

5, Yue Sun, Chenjiang Qian, Kai Peng, Zelong Bai, Jing Tang, Yanhui Zhao, Shiyao Wu, Hassan Ali, Feilong Song, Haizheng Zhong, and Xiulai Xu, Recombination processes in CuInS2/ZnS nanocrystals during steady-state photoluminescence, Appl. Phys. Lett. 108, 041106 (2016).

4, J. D. Mar, J. J. Baumberg, X. L. Xu, A. C. Irvine, and D. A. Williams, Electrical control of quantum-dot fine-structure splitting for high-fidelity hole spin initialization, Phys. Rev. B 93, 045316, (2016).

3, Jing Zhang, Jinhuan Wang, Peng Chen, Yue Sun, Shuang Wu, Zhiyan Jia, Xiaobo Lu, Hua Yu, Wei Chen, Jianqi Zhu, Guibai Xie, Rong Yang, Dongxia Shi, Xiulai Xu, Jianyong Xiang, Kaihui Liu, Guangyu Zhang, Observation of Strong Interlayer Coupling in MoS2/WS2 Heterostructures, Advanced Materials 28, 1950 (2016).

2, Yunyan Zhang, Ana M. Sanchez, Yue Sun, Jiang Wu, Martin Aagesen, Suguo Huo, Dongyoung Kim, Pamela Jurczak, Xiulai Xu, and Huiyun Liu, Influence of Droplet Size on Growth of Self-Catalyzed Ternary GaAsP Nanowires, Nano Lett. 16, 1237 (2016).

1, Shuo Cao, Jing Tang, Yue Sun, Kai Peng, Yunan Gao, Yanhui Zhao, Chenjiang Qian, Sibai Sun, Hassan Ali, Yuting Shao, Shiyao Wu, Feilong Song, David A. Williams, Weidong Sheng, Kuijuan Jin, and Xiulai Xu, Observation of coupling between zero- and twodimensional semiconductor systems based on anomalous diamagnetic effects, Nano Research, 9, 306 (2016).