Irfan Ali Khan, PhD

     

      48 Ginzton Lab •Stanford University • Stanford, CA 94305 • (650) 723-0228 • iak@stanford.edu

 

Curriculum Vitae

Education      

University of Rochester                                                                              Rochester, NY

Ph.D. Physics                                                                                                             2007

Imperial College                                                                                             London, UK

B.Sc. Physics/ M.Sc. Physics                                                                                           2000/2001

 

Research Experience

Stanford University                                                                                         Stanford, CA

Research Scholar, Applied Physics, Ginzton Laboratory                                    May 2007-present

Advisor: Prof. S. E. Harris

*         Towards generation of Single Cycle Bi-Photons.

*         Chirped poling of non-linear crystals, pulse compression.

*         Setting up lab for new project.

University of Rochester                                                                               Rochester, NY

      Research Assistant, Experimental Quantum Optics Group                                       2002-2007

  Advisor: Dr. J. C. Howell

*      First student in group, have independently mentored 4 junior members.

*      Strong publications and numerous presentations at scientific/industrial conferences.

*      I owe my success to the teamwork of my peers and advisor.

Sample Projects

All-Optical Buffering of Images in Slow-Light Medium                                              2006-2007

Optical pulses in an imaging system are buffered in a Cesium vapor cell.

*      Pulses are delayed up to 10 nanoseconds.

*      Fiber scans of 10 nanometer resolution via LabView to reconstruct image.

*      Press coverage in Washington Post and Scientific America Online.

Quantum Key Distribution (QKD) in Fiber Using Entangled Photon Pairs                 2004-2007

BMP image is transmitted over digital network using generated key.

*      100 femtosecond long photon pairs are generated in parametric down-conversion.

*      Photon arrival times recorded and synchronized to 50 picoseconds resolution.

*      Co-inventor and joint patent holder of cryptographic technique.

Quantum Imaging with Entangled Photons                                                              2004-2007

Investigate imaging enhancement and other free-space applications.

*      Research lithography, bio-imaging and other novel techniques.

*      Collaborative project obtained $147M in 2005 from Department of Defense. 

University of Rochester portion amounts to $5M over a period of 5 years.

Imperial College                                                                                             London, UK

Masters Candidate, Theoretical Quantum Optics Group                                                      2001

Advisor: Prof. P. Knight

*      Investigate entanglement in rudimentary solid-state system by modeling in C++.

Paul Scherrer Institute                                                                                   Villigen, CH

Summer Intern, High Energy Solar Spectroscopic Imager                                                      1999

 

Select Journal Publications

*      I. Ali-Khan, C. J. Broadbent, and J. C. Howell,

Large-Alphabet Quantum Key Distribution Using Energy-Time Entangled Bipartite States,

Phys. Rev. Lett. 98, 060503(2007)

*      R. M. Camacho, C. J. Broadbent, I. Ali-Khan and J. C. Howell,

All-Optical Delay of Images using Slow Light,

--Editor Suggested--                                          Phys. Rev. Lett. 98, 043902 (2007)

*      M. N. O'Sullivan-Hale, I. Ali Khan, R. W. Boyd, and J. C. Howell,

Pixel Entanglement: Experimental Realization of Optically Entangled d=3 and d=6 Qudits,                                           

                                                                             Phys. Rev. Lett. 94, 220501 (2005)

*      I. Ali Khan and J. C. Howell

Exploring the optimal sensitivity of sum-variance nonseparability criteria for spin-1/2 systems,

                                                                                   Phys. Rev. A      70, 062320 (2004)

Patents

*      J. C. Howell and I. Ali Khan,

High Bandwidth Time-Energy Quantum Cryptography,

prov. pat. filed Jan 10, 2006. Ref#1-11072-06010

Select Conference Talks

*      Experimental Demonstration of Large Alphabet QKD Using Energy Time Entanglement,

       --Postdeadline--                                                                CLEO/QELS (May 2006)

*      High Bandwidth Quantum Communication and EPR’s Paradox,  

                                                                                 SPIE annual meeting (July 2005)

*      Experimental Demonstration of High Dimensional Time-Energy Entangled Two-Photon States,  

 CLEO/QELS (May 2005)

 

Skills

*      Creative problem solver, adept at learning new skills on the job, I enjoy challenges.

Optics and Opto-Mechanics


*      Diode lasers.

*      Tapered amplifiers.

*      Frequency doubling in high finesse cavity.

*      Single photon detection.

*      Parametric down-conversion.

*      Second harmonic generation.

*      Four-wave mixing.

*      Fiber optics cleaving/splicing.

*      UV/visible/telecom wavelengths.

*      Scan automation (10 nm).

*      10 nm interferometry.


Electronics


*      Coincidence logic (ns, Hz-MHZ).

*      Time-to-Digital Converters (20 ps).

*      NIM/CAMAC logic and interface.

*      PID, Pound-Drever-Hall Locking.


Interfacing and Modeling Software


*      C++

*      LabVIEW

*      MatLab

*      Mathematica


 

Extracurricular

*      Avid soccer player.

*      Learning to play the guitar.

*      I love to build computers.

*      I love to travel, and hope to travel more frequently in the future.