## Biography

Dr. Yehuda Braiman is Research Professor at The College of Photonics and Optics and Department of Electrical and Computer Engineering at the University of Central Florida started January 2020. He is also an Adjunct Professor at the Department of Mechanical, Aerospace, and Biomedical Engineering at the University of Tennessee. Prior to his appointment at UCF, Dr. Braiman held an appointment of a Distinguished R&D Scientist at Computational Sciences and Engineering Division, Oak Ridge National Laboratory and Joint Faculty Professor at Department of Mechanical, Aerospace, and Biomedical Engineering, University of Tennessee.

### Research Interests

Dr. Braiman’s research interests cover multiple disciplines including lasers and optics, dynamics of Josephson junctions and Josephson junction arrays, nonlinear dynamics and chaos control, friction and fracture at the atomistic scale, and detection of weak signals in noisy environment. Specific applications include beam combining and phase-locking of high-power, broad-area semiconductor diode arrays, studying the dynamics and formation of ultrafast pulses in semiconductor diodes, design of cryogenic memory based on small arrays of Josephson junctions, and studying effects of very weak perturbations on noisy extended nonlinear systems. He co-authored 57 journal papers, 17 refereed conference papers, and 8 book chapters, edited one book, and co-authored 4 patents. Some of Dr. Braiman’s research accomplishments include (1) discovery of chaos in Josephson junctions (with E. Ben Jacob and Y. Imry); (2) devised a method to control chaos (with I. Goldhirsch, Physical Review Letters article cited more close to 600 times according to Google Scholar); and (3) proposed a method to eliminate spatiotemporal chaos by introducing spatial disorder (article highlighted on the cover page of Nature and in Nature News & Views, (Taming Spatiotempoal Chaos with Disorder, with W. L. Ditto and J. F. Lindner, article cited more than 250 times according to Google Scholar). Most recently, Dr. Braiman in collaboration with N. Nair, J. Rezac, R. Glowinski, and N. Imam proposed design for cryogenic memory cell. In the proposed design all the basic memory operations are implemented on the same circuit and it has a potential to substantially reduce memory access time dissipation energy and reduce memory cell size. This design has been published in Superconductor Science and Technology and paper was selected for a Superconductor Science and Technology 2016 Highlight Collection.

### Honors & Awards

- 1995 Paper was selected for a cover page of Nature.
- 2000 Award for outstanding technical achievement, UT-Battelle, LLC
- 2009 Significant Event Award, UT-Battelle, LLC
- 2013 Significant Event Award, UT-Battelle, LLC
- 2013 R&D 100 Award
- 2016 Paper selected for a Superconductor Science and Technology 2016 Highlight Collection
- 2016 Significant Event Award, UT-Battelle, LLC
- 2019 APS Outstanding Referee Award

### Professional Activities

Member of APS and OSA. Refereed paper for Physical Review Letters and Physical Review, Europhysics Letters, Optics Communications, Optics Express, Optics Letters, Applied Optics, Chaos, IEEE Journal of Photonics, Journal of Physics Condensed Matter Physics, Physics Letters A. Co-organized multiple major international conferences/workshops in the fields of nonlinear dynamics and tribology and chaired sessions in professional national and international meetings.

### Publications

__Journal Articles__

- R. Glowinski, J. Lopez, H, Juarez, and Y. Braiman, “
*On the Controllability of Transitions Between Equilibrium States in Small Inductively Coupled Arrays of Josephson Junctions: A Computational Approach*”,**Journal of Computational Physics**, 109023 (2020).__403__ - N. Nair, A. Jafari-Salim, AN. D’Addario, N. Imam, and Y. Braiman, “
*Experimental Demonstration of a Josephson Cryogenic Memory Cell Based on Coupled Josephson Junction Arrays*”,**Superconductor Science and Technology**, 115012 (2019).__32__ - N. Nair, E. Bochove, and Y. Braiman, “
*Almost Perfect In-Phase and Anti-Phase Chaotic and Periodic Phase Synchronization in Large Arrays of Diode Lasers*”,**Optics Communications**, 104 (2019).__430__ - N. Nair and Y. Braiman, “
*A Ternary Memory Cell Using Small Josephson Junction Arrays*”,**Superconductor Science and Technology**, 115012 (2018).__31__ - N. Nair, E. Bochove, and Y. Braiman, “
*Phase-Locking of Arrays of Weakly Coupled Semiconductor Lasers*”,**Optics Express**, 20040 (2018).__26__ - B. Liu and Y. Braiman, “Coherent Addition of High-Power Broad-Area Laser Diodes with a Compact VBG V-shaped External Talbot Cavity”,
**Optics Communications**, 202 (2018).__414__ - J. Rezac, N. Imam, and Y. Braiman, “
*Parameter Optimization for Transitions between Memory States in Small Arrays of Josephson Junctions”,***Physica A****474**, 267 (2017). - Y. Braiman, N. Nair, J. Rezac, and N. Imam, “Memory Cell Operation Based on Small Josephson Junction Arrays”,
**Superconductor Science and Technology****129**, 124003 (2016). - Y. Braiman, N. Neschke, N. Nair, N. Imam, and R. Glowinski, “
*Memory States in Small Arrays of Josephson Junctions*”,**Physical Review E****94**, 052223 (2016). - B. Liu, Y. Braiman, N. Nair, Y. Lu, Y. Guo, P. Colet, and M. Wardlaw, “
*Nonlinear Dynamics and Synchronization of an Array of Single Mode Laser Diodes in External Cavity Subject to Current Modulation*”,**Optics Communications**, 301 (2014).__324__ - B. Liu and Y. Braiman, “
*Coherent Beam Combining of High Power Broad-Area Laser Diode Array with Near Diffraction Limited Beam Quality and High Power Conversion Efficiency*”,**Optics Express**, 31218 (2013).__21__ - B. Liu and Y. Braiman,
*“Spectral Linewidth Narrowing and Tunable Two-Color Laser Operation of Two Diode Laser Arrays”*,**Applied Optics**, 1816 (2012).__51__ - Y. Guo, Z. Wang, Z. Qu, and Y. Braiman, “
*Atomic-Scale Friction Control Using Friction Force Microscope*”,**Control Engineering Practice**, 1387 (2011).__19__ - E.J. Bochove, A.B. Aceves, Y. Braiman, P. Colet, R. Deiterding, A. Jacobo, C.A. Miller, C. Rhodes, S.A. Shakir, “
*Model of the Self-Q-Switching Instability of Passively Phased Fiber Arrays*”,**IEEE Journal of Quantum Electronics**, 777 (2011).__47__ - B. Liu, Y. Liu, and Y. Braiman, “
*Coherent Beam Combining of High Power Broad-Area Laser Diode Array with a Closed V-Shape External Talbot Cavity*”,**Optics Express**, 7361(2010).__18__ - Y. Braiman and T. Egami, “
*Nanoscale Oscillatory Fracture Propagation in Metallic Glasses*”,**Physica A**1978 (2009).__38__, - B. Liu, Y. Liu, and Y. Braiman,
*“Linewidth Reduction of Broad-Area Laser Diode Array in a Compound External Cavity”*,**Applied Optics**, 365 (2009).__48__ - B. Liu, Y. Liu, and Y. Braiman, “
*Coherent Addition of High Power Laser Diode Array with a V-Shape External Talbot Cavity”*,**Optics Express**20935 (2008).__16,__ - Y. Guo, Z. Qu, Y. Braiman, Z. Zhang, and J. Barhen,
*“Nanotribology and Nanoscale Friction”*,**IEEE Controls System Magazine**, 92 (2008).__28(6)__ - Y. Braiman and T. Egami,
*Transitions from Smooth to Oscillatory Fracture Propagation in Brittle Metallic glasses*,**Phys. Rev. E**, 065101(R) (2008).__77__ - V. Danilov et. al,
*Proof-of-principle demonstration of high efficiency laser-assisted H- beam conversion to protons,***Physical Review Special Topics-Accelerators and Beams**053501 (2007).__10__, - S. Jeon, T. Thundat, and Y. Braiman,
*Effect of Normal Vibration on Friction in the Atomic Force Microscopy Experiment*,**Appl. Phys. Lett.**, 214102 (2006).__88__ - V. Kireev, Y. Liu, Y. Braiman, B. Radhakrishnan, C. H. Hsueh, and P. F. Becher,
*Thin-Film Adhesion Measurement Using Laser-Generated High-Power Surface Acoustic Waves*,**Appl. Phys. Lett.**, 191911 (2006).__88__ - Y. Liu and Y. Braiman,
*Synchronization of High-Power Broad-Area Semiconductor Lasers*,**IEEE Journal of Selected Topics in Quantum Electronics**1013 (2004).__10__, - S. Jeon, Y. Braiman, and T. Thundat,
*Cross Talk between Bending, Twisting, and Buckling Modes of three Types of Microcantilever Sensors*,**Rev. Sci. Instr.**4841 (2004).__75__, - Y. Liu, V. Kireev, and Y. Braiman,
*Frequency Locking and Wavelength Tuning of Nanosecond Pulsed Broad Area Lasers*,**Appl. Phys. Lett.**, 4265, (2004).__84__ - S. Jeon, Y. Braiman and T. Thundat,
*Torsional Spring Constant for an Atomic Force Microscope Cantilever*,**Appl. Phys. Lett.**, 1795 (2004).__84__ - V. Danilov, A. Aleksandrov, S. Assadi, S. Henderson, N. Holtkamp, T. Shea, A. Shishlo, Y. Braiman, Y. Liu, J. Barhen, T. Zacharia,
*A Novel Solution for H- Laser Stripping*,**Phys. Rev. Special Topics**: Accelerators and Beams, 053501 (2003).__6__ - E. Jung, S. Lenhart, V. Protopopescu, and Y. Braiman,
*Optimal Control of Transient Behavior in Coupled Solid State Laser*,**Phys. Rev. E**, 046222, (2003).__67__ - Y. Braiman, J. Barhen, and V. Protopopescu,
*Controlling Friction at the Nanoscale*,**Phys. Rev. Lett**., 094301 (2003).__90__ - Y. Braiman and V. Protopopescu,
*Using Small Vibrations to Control Friction at the Nanoscale*, Absrt. Pap. Am. Chem. Society: 102-Phys Part 2 Apr 7, (2002).__223__ - J. Zhong, Y. Braiman, and J. Wells,
*Surface Diffusion and Size Evolution of Nanostructures in Laser-Focused Atomic Deposition*,**Journal of Vacuum Science & Technology B**, 2758 (2002).__20__ - Y. Liu, J. Barhen, Y. Braiman, and J. Zhong,
*Interference Pattern Formation from an Array of Coherent Laser Beams*,**Journal of Vacuum Science & Technology B**, 2602 (2002).__20__ - Y. Liu, H. K. Liu, and Y. Braiman,
*Simultaneous Injection Locking of Couples of High-Power Broad-Area Lasers Driven by a Common Current Source*,**Appl. Opt.**, 5036 (2002).__41__ - Y. Liu, H. K. Liu, and Y. Braiman,
*Injection Locking of Individual Broad Area Lasers in an Integrated High-Power Diode Array*,**Appl. Phys. Lett.**, 978 (2002).__81__ - A. I. Khibnik, Y. Braiman, V. Protopopescu, T. A. B. Kennedy, and K. Wiesenfeld,
*Amplitude Dropout in Coupled Lasers*,**Phys. Rev. A**, 063815 (2000).__62__ - F. Family, H. G. E. Hentschel, and Y. Braiman,
*Friction at the Nanoscale*, J**. Chem. Phys. B**, 3984 (2000).__104__ - H. G. E. Hentschel, F. Family, and Y. Braiman,
*Friction Selection in Nonlinear Particle Arrays*,**Phys. Rev. Lett.**, 104 (1999).__83__ - Y. Braiman, H. G. E. Hentschel, F. Family, C. Mak, and J. Krim,
*Tuning Friction with Noise and Disorder*,**Phys. Rev. E**, R4737 (1999).__59__ - M. N. Popescu, Y. Braiman, F. Family, and H. G. E. Hentschel,
*Quenched Disorder Enhances Chaotic Diffusion*,**Phys. Rev. E,**, R4057 (1998).__58__ - A. Khibnik, Y. Braiman, T. A. B. Kennedy, K. Wiesenfeld,
*Phase Model Analysis of Two Lasers with Injected Field*,**Physica D,**, 295 (1998).__111__ - Y. Braiman, F. Family, H. G. E. Hentschel,
*Nonlinear Friction in the Periodic Stick-Slip Motion of Coupled Oscillators in Periodic Potential*,**Phys. Rev. B15**, 5491 (1997).__55__ - Y. Braiman, F. Family, H. G. E. Hentschel,
*Discrete Voltage States in 1D Parallel Array of Josephson Junctions*,**Appl. Phys. Lett.**, 3180 (1996).__68__ - Y. Braiman, F. Family, H. G. E. Hentschel,
*Array Enhanced Friction in the Periodic Stick-Slip Motion of Nonlinear Oscillators*,**Phys. Rev. E**, R3005 (1996).__53__ - P. Colet and Y. Braiman,
*Control of Chaos in Multimode Solid State Lasers by Use of Small Periodic Perturbations*,**Phys. Rev. E**, 200 (1996).__53__ - A. S. Landsberg, Y. Braiman and K. Wiesenfeld,
*Effect of Disorder on Synchronization in Prototype Two-Dimensional Josephson Arrays*,**Phys. Rev. B**, 15458 (1995).__52__ - Y. Braiman, J. F. Lindner, and W. L. Ditto,
*Taming Spatiotemporal Chaos with Disorder*“,**Nature**, 465 (1995).__378__ - A. S. Landsberg, Y. Braiman and K. Wiesenfeld,
*Disorder and Synchronization in a Josephson Junction Plaquette*,**Appl. Phys. Lett.**, 1935 (1995).__67__ - Y. Braiman, W. L. Ditto, M. L. Spano, and K. Wiesenfeld,
*Disorder-Enhanced Synchronization*,**Phys. Lett. A**, 54 (1995).__206__ - Y. Braiman, T. A. B. Kennedy, K.Wiesenfeld, and A. Khibnik,
*Entrainment of Solid-State Laser Arrays*,**Phys. Rev. A**, 1500 (1995).__52__ - Y. Braiman and K. Wiesenfeld,
*Global Stabilization of a Josephson-Junction Array*,**Phys. Rev. B**, 15223 (1994).__49__ - Y. Braiman, I. Goldhirsch, and J. Klafter,
*Energy Localization and Delocalization in a Nonlinear Chain on a Substrate*,**Phys. Rev. E**, 838 (1994).__50__ - Y. Braiman, Y. Baumgarten, and J. Klafter,
*Symmetry Properties of Finite Frenkel-Kontorova Chains*,**Phys. Rev. B**, 11159 (1992).__47__ - Y. Braiman and I. Goldhirsch,
*Taming Chaos with Weak Periodic Perturbations*,**Phys. Rev. Lett.**, 2545 (1991).__66__ - Y. Braiman, Y. Baumgarten, Joshua Jortner, and J. Klafter,
*Symmetry Breaking Phase Transition in Finite Frenkel-Kontorova Chains*,**Phys. Rev. Lett.**, 2398 (1990).__65__ - E. Ben Jacob, Y. Braiman, R. Shainsky, and Y. Imry,
*Microwave induced “Devil’s Staircase” Structure and Chaotic Behavior in Current- fed Josephson Junctions*,**Appl. Phys. Lett.**822 (1981).__38__, - Y. Braiman, E. Ben Jacob, and Y. Imry,
*Current Noise Effects on the Microwave Induced Steps in Current-fed Josephson Junctions*, IEEE Trans. on Magnetics,, 784 (1981).__MAG 17__

__Books__

- Y. Braiman, J. M. Drake, F. Family, and J. Klafter, eds.,
*Dynamics and Friction in Submicrometer Confining Systems*, ACS Symposium Series**882**, Oxford University Press (2004).

__Book Chapters__

- N. Nair, E. Bochove, and Y. Braiman, “Transverse Modes of Coupled Nonlinear Oscillator Array”,
**Proceedings of the****4**, V. In, P. Longhini, and A. Palacios eds., Springer International Publishing AG, 2017.^{th}International Conference on Applications in Nonlinear Dynamics (ICAND 2016) - B. Liu, P. Colet, and Y. Braiman,
*“Semiconductor Laser Beam Combining”*, in**Semiconductor Lasers, Fundamentals and Applications**eds. by A. Baranov and E. Tournie, Woodhead Publishing Limited (2013). - S. Jeon, T. Thundat, and Y. Braiman,
*Frictional Dynamics at the Atomic Scale in Presence of Small Oscillations of the Sliding Surface,*in**Superlubricity**, A. Erdemir and J.-M. Martin eds, Elsevier (2007). - Y. Liu and Y. Braiman,
*Dynamics and Synchronization in a Broad-Area Semiconductor Laser Array with External Optical Feedback,*in**Experimental Chaos VIII,**S. Boccaletti, B. J. Gluckman, J. Kurths, L. Pecora, R. Meucci, and O. Yordanov eds, American Institute of Physics (2004). - Y. Braiman, J. Barhen, and V. Protopopescu,
*Non-Lipschitzian Control of Friction*, in**Dynamics and Friction in Submicrometer Confining Systems**, in Y. Braiman, J. M. Drake, F. Family, and J. Klafter eds., ACS Symposium Series**882**, Oxford University Press (2004). - Y. Braiman, J. Barhen, and V. Protopopescu,
*Non-Lipschitzian Control Algorithm for Nanoscale Friction*, in**Dynamics in Small Confining Systems – 2003**, MRS Proceedings vol.**790**, Materials Research Society (2004). - F. Family, Y. Braiman, H. G. E. Hentschel,
*Attractor Hopping – a Mechanism for Stick-Slip Dynamics*, in**Friction, Arching, Contact Dynamics**, Eds. D. E. Wolf, and P. Grassberger, World Scientific (1996). - Y. Braiman, E. Ben Jacob, and Y. Imry,
*Microwave Induced Harmonic and Subharmonic Steps in the I-V Characteristics of the Current Fed Josephson Junctions*,**SQUID 80**, 783, Eds. by H. D. Hahlbohm and H. Lubbig (de Gruyter, Berlin 1980).

__Conference Proceedings Papers__

- N. Nair, E. Bochove, A. B. Aceves, M. Zunoubi, and Y. Braiman, “
*Resonator Modes and Mode Dynamics for an External Cavity-Coupled Laser Array*”, Proceedings of SPIE**9343,**93431D (2015). - E. Bochove, B. Neschke, N. Nair, P. Delgado, and Y. Braiman, “
*Phase Dynamics of High Radiance Laser Arrays with Active Phase Control*”, Proceeding of SPIE**9343**, 93431C (2015). - B. Liu and Y. Braiman,
*“Near Diffraction Limit Coherent Addition of broad-Area Laser Diode Arrays”*, SSDLTR Technical Digest, 2013. - S. Li, Y. Guo, and Y. Braiman,
*“Synchronizing Coupled Semiconductor Lasers under General Coupling Topologies”,*2013 American Control Conference (ACC),**978**, 1231 (2013). - E.J. Bochove, S.A. Shakir, Y. Starcher, A. Jacobo, P. Colet, A.B. Aceves, Y. Braiman, R. Deiterding, C.A. Miller, C. Rhodes, “
*Simple Model to Explain Instability in Passively-Phased High-Power Fiber Laser Arrays*”, Proceedings of SPIE**8080**, 808009 (2011). - E. J. Bochove, A. Aceves, R. Deiterding, L. Crabtree, Y. Braiman, A. Jacobo, P. Colet, “Space-Time-Dynamic Model of Passively-Phased Ring-Geometry Fiber Laser Array”. Proceedings of SPIE, vol.
**7580**, 758026 (2010). - B. Liu, Y. Liu, and Y. Braiman, “
*Coherent Beam Combining of High-Power Broad-Area Laser Diode Array in CW and Pulsed Modes*”, Proceedings of SPIE, vol.**7583**, 75830Z (2010). - Y. Liu, V. Kireev, and Y. Braiman,
*Frequency Locking and Synchronization of Nanosecond Pulsed Broad Area Lasers*, Proceedings of the SPIE, vol.**5336**(2004). - Y. Liu, V. Kireev, and Y. Braiman,
*Broad-Area Laser Array Synchronization Using External Cavity*, Proceedings of the SPIE, vol.**5336**(2004). - Y. Braiman, Y. Liu, V. Kireev, V. Protopopescu, and J. Barhen,
*Synchronization of High Power Lasers*, Proceedings of the Sixteenth Annual Solid State and Diode Laser Technology Review, SSDLTR 2003 Technical Digest, Directed Energy Professional Society, Albuquerque, 20 – 22 May 2003. - R.E. Meyers, K. S. Deacon, Y. Braiman, Y. Liu, H. K. Liu, Y. Kim, and J. Barhen,
*Use of Synchronized Laser Array as Source of Quantum Communication*, in Proceedings of Free-Space Laser Communication and Laser Imaging (vol.**4821**), SPIE’s 47^{th}Annual Meeting, Seattle, WA, (2002). - Y. Liu, H. K. Liu, and Y. Braiman,
*Injection Locking of Broad-Area Semiconductor Lasers for Free-Space Communication*, in Proceedings of Free-Space Laser Communication and Laser Imaging (vol.**4821**), SPIE’s 47^{th}Annual Meeting, Seattle, WA, (2002). - Y. Liu, G. Bitton, P. Cheinet, R. Garrett, H. K. Liu, and Y. Braiman,
*Enhancement of coherence and intensity in a broad-area semiconductor laser array with injection locking*, in Proceedings of LASE 2002, High Power Lasers and Applications, SPIE’s 14^{th}Annual Symposium Photonics West, (2002). - Y. Braiman, J. Barhen, and V. Protopopescu,
*Control of Friction at the Nanoscale*, Proceedings of 20th Symposium on Energy Engineering Sciences, DOE/OSTI/CONF-2000/1, (2002). - J. Barhen, J. C. Wells, V. Protopopescu, and Y. Braiman,
*Neuromorphic Pattern Recognition Using Arrays of Quantum Dots*, in Proceedings of SCI 2000, 11, IFSR Press, (2000). - J.C. Wells, L. Maya, K. Stevenson, T. G. Thundat, J. Barhen, Y. Braiman, V. Protopopescu,
*Biophysical Directed Assembly of Nanostructures for Neurocomputing*, Proceedings of the 18th Symposium on Energy Engineering Sciences, DOE/OSTI/CONF-2000/1, (2000). - Y. Braiman, G. Bitton, H. K. Liu, V. Protopopescu, L. Zhang, and J. Barhen,
*Coherence and Synchronization in Arrays of Class B Lasers*, Proceedings of the 18th Symposium on Energy Engineering Sciences, DOE/OSTI/CONF-2000/1, (2000).

__Patents __

- Y. Braiman, N. Imam, and B. Neschke, “
*Memory Cell Design Comprising Coupled Josephson Junctions*” U.S. Patent**10516089**. issued 2019. - Liu, Y. Liu, and Y. Braiman, “
*Resonator Design for Coherent Addition of Semiconductor Laser Arrays*”, U. S. Patent**8340151**, issued December 2012. - J. Barhen, Y. Braiman, and V. Protopopescu,
*“Control of Friction at the Nanoscale”*, U.S. Patent**76393587**issued April 2010. - V. Kireev, Y. Liu, V. Protopopescu, and Y. Braiman,
*“**Cascaded Injection Resonator for Coherent Beam Combining of Laser Arrays”,*U.S. patent**7440483**, issued October 2008. - Y. Braiman and Y. Liu,
*“Master Laser Injection of Broad Area Lasers”*, U.S. patent**6782016,**issued August 2004.