Experienced experimental physics researcher with extensive background in optical, mechanical and electronic design, implementation and testing. Proven ability to manage multiple research projects and work independently to meet tight deadline. Adept at data collecting, analyzing, reporting and presentation. Demonstrated ability to adapt to new equipment and technology, and maintain an in-depth and up-to date knowledge in the field.
Optics: optical system design and construction, diode laser, tapered amplifier, high power fiber laser,
high resolution imaging system, frequency lock, intensity lock, acousto-optic modulator
PCB layout design
Python, Matlab/Octave, C++
Gemelke's Lab in Atomic and Optical Physics Penn State UniversityResearch Assistant | June 2011 - Current
Design and construct an entire experimental apparatus from ground up, to sdudy quantum dynamical gauge fields in an open quantum system.
Demonstrate non-equilibrium behavior in a quantum gas of atoms reminiscent of the information paradox in black hole physics, and whose scaling behavior can be understood from holographic principles.
Detailed achievements include: Developing double-pass optical tapered amplifier, including current control and temperature control circuits, to enhance the amplification by a factor of 20, which outputs 1 W of infrared laser power with only 200 uW injection power.
Developing optical switchyard to accurately control the timing of tens of laser beams using acoustical optical modulators, liquid crystal modulators and mechanical shutters, and building supporting electronic control circuits.
Building and maintaining external-cavity diode lasers (ECDL) frequency locks based on Doppler free absorption spectroscopy and offset beat-note phase lock loop, and achieving large dynamical tunning range and locking bandwidth.
Constructing experimental apparatus for trapping and cooling neutral atoms (Rb), including one ultra high vacuum chamber ( 10-12 torr) and two megneto-optical traps, and cooling atoms down to a temperature below 10-6 K from room temperature.
Involving in developing experimental timing control software, which integrates XML (to create time sequence), Python server (to parse time sequence) and Labview (to execute time sequence).
Realizing broadband Raman sideband cooling of Rb atoms in a 3D far off resonance disordered optical potential for the first time, and achieving extremely low temperature 50 nK from laser cooling.
Observing non-equilibrium scaling behavior of atoms in an disordered potential under laser cooling, and whose scaling behavior can be understood as a quantum dynamical gauge field moves in a spatially dependent metric revealing information contant of the potential through holographic principle.
Penn State UniversityTeaching Assistant | January 2016 - May 2003
Teach undergraduate students electricity and magnetism laboratory for two semesters, each has around 150.
National Microstructure Laboratory Nanjing UniversityResearch Assistant | January 2007 - January 2016
Investigate and engineer several kinds of classical and quantum nonlinear effects during light frequency conversion in optical nonlinear crystal.
Detailed achievements include: Design and fabricating one- and two- dimensional optical dielectric superlattice, including periodically poled LiTaO3 (PPLT) crystal and periodically poled LiNiO3 (PPLN) crystal, using external pulse poling technique.
Introducing chirped optical superlattice to optical sum frequency generation and studying the continuous-variable entanglement property of this process using quantum stochastic method.
Experimental engineering and theoretical studying temporal and spatial correlation of entangled photons from spontaneous down-conversion in nonlinear superlattice, with single photon detector and two photon interferometry.
Predicting a two-photon states with positive momentum correlation using extented quasi-phase matching in nonlinear crystal, which is observed by experiment recently.
Inverstigating near field entanglement properties of two-photon states generated from multi-channel domain- engineered nonlinear crystal, and observing quantum Telbot effect.
Engineering optical parametric amplification, optical parametric oscillation and second harmonic generation, with PPLT nonlinear crystal to generate red-green-blue light source.
Nanjing University Teaching Assistant | August 2008 - January 2009
Gave review lectures, answer questions from students and grade homework in a class of 200 students.
Department of Physics
Ph.DAtomic/Molecular and Optical PhysicsPenn State University | CurrentExpected in Jul. 2016 , Atomic, molecular and optical physics 20102016
Thesis Topic: Dynamical Gauge Effects and Holographic Scaling of Non-Equilibrium Motion in a Disordered and
Dissipative Atomic Gas.
Master of SciencePhysicsNanjing University | 2010Quantum Optics and Nonlinear Optics 20072010
Thesis Topic: Theoretical Study on Several Kinds of Entanglement in Optical Superlattice.
Bachelor of SciencePhysicsNanjing University | 2007Physics 20032007
1. Jianshi Zhao, Craig Price, Qi Liu and Nathan Gemelke, "Dynamical Gauge Effects and Holographic Scaling of Non-Equilibrium Motion in a Disordered and Dissipative Atomic Gas", APS March Meeting 2016, B50.00005, Talk 2. Jianshi Zhao, Louis Jacome, and Nathan Gemelke, " Fractional Quantum Hall Effects for Bosonic Atoms in a Chain of Rotating Traps", 46th Annual Meeting of the APS DAMOP, Volume 60, Number 7 , Talk 3. Louis Jacome, Jianshi Zhao, and Nathan Gemelke, "Probing Fractional Quantum Hall Physics with Rotating Bose Gases", APS March Meeting 2015, Volume 60, Number 1, Poster 4. Louis Jacome, Jianshi Zhao, and Nathan Gemelke, "Fractional Quantum Hall Physics with Rotating Bose Gases", 45th Annual Meeting of the APS DAMOP,Volume 59, Number 8, Poster 5. Jianshi Zhao, Louis Jacome, and Nathan Gemelke, "Fractional Quantum Hall Effects in a Two- Dimensional Atomic Gas", APS March Meeting 2014, Volume 59, Number 1, Poster Publications 1. Jianshi Zhao, Craig Price, Qi Liu and Nanthan Gemelke, "Dynamical Gauge Effects and Holographic Scaling of Non-Equilibrium Motion in a Disordered and Dissipative Atomic Gas", in preparation 2. Jianshi Zhao, Louis Jacome, and Nanthan Gemelke, "Localization and Fractionalization in a Chain of Rotating Atomic Gases", in preparation 3. H. Jin, P. Xu, J. S. Zhao, H. Y. Leng, M. L. Zhong, and S. N. Zhu, "Observation of quantum Talbot effect from a domain-engineered nonlinear photonic crystal", Applied Physics Letters, 101, 211115 (2012) 4. Sujun Yun, P. Xu, J. S. Zhao, Y. X. Gong, Y. F. Bai, J. Shi, and S. N. Zhu, "Generation of positively- momentum-correlated biphotons from spontaneous parametric down-conversion", Phys. Rev. A, 86, 023852 (2012) 5.J.S. Zhao, L. Sun, X. Q. Yu, J. F. Wang, H. Y. Leng, Z. D. Xie, Y. L. Yin, P. Xu, S. N. Zhu, "Broadband continuous variable entanglement source using a chirped poling nonlinear crystal", Phys. Rev. A, 81, 013832 (2010) 6.J.F. Wang, J. S. Zhao, H. Y. Leng, X. Q. Yu, Z. D. Xie, Y. L. Yin, P. Xu, S. N. Zhu, "Quadripartite entanglement from cascaded 2 nonlinear interactions", Opt. Comm., 282, 3729-3733(2009) 7.H.Y. Leng, J. F. Wang, Y. B. Yu, X. Q. Yu, P. Xu, Z. D. Xie, J. S. Zhao, and S. N. Zhu, "Scheme to generate continuous-variable quadripartite entanglement by intracavity down-conversion cascaded with double sum-frequency generations", Phys. Rev. A, 79, 032337(2009) 8. P. Xu, J. F. Wang, C. Li, Z. D. Xie, X. J. Lv, H. Y. Leng, J. S. Zhao and S. N. Zhu, "Simultaneous optical parametric oscillation and intracavity second-harmonic generation based on a hexagonally poled lithium tantalite", Opt. Exp. 17, 4289-4294(2009) 9.X.Q. Yu, P. Xu, Z. D. Xie, J. F. Wang, H.Y. Leng, J. S. Zhao, S. N. Zhu, and N. B. Ming, "Transforming Spatial Entanglement Using a Domain-Engineering Technique", Phys. Rev. Lett. 101,233601(2008) 10. P. Xu, Z. D. Xie, H. Y. Leng, J. S. Zhao, J. F. Wang, X. Q. Yu, Y. Q. Qin, and S. N. Zhu, "Frequency self-doubling optical parametric amplification : noncollinear red-green-blue lightsource generation based on a hexagonally poled lithium tantalite", Opt. Lett. 33,2791-2793(2008) 3/3