About

I am the CEO, President and Co-Founder of softwareQ Inc, and a researcher at the Institute for Quantum Computing, working with Michele Mosca on theoretical aspects of quantum computation and (post-quantum) cryptography. I am also collaborating on quantum risk assessment with evolutionQ Inc.

I am involved in the CryptoWorks21 Quantum-Safe Cryptographic Infrastructure Program and I am a member of the European Telecommunications Standards Institute (ETSI) Quantum-Safe Cryptography Standardization Group.

I graduated from Carnegie Mellon University with a PhD in Theoretical Physics. My advisor was Robert B. Griffiths.

Curriculum Vitae as of April 2019

"Try not to become a man of success,
but rather try to become a man of value"
–Albert Einstein

Contact

Institute for Quantum Computing (IQC) at the University of Waterloo
200 University Avenue West, Waterloo, ON, N2L 3G1, Canada
Office: IQC-QNC 3112
Email: vgheorgh AT gmail DOT com
Twitter: @vlad_hbar
PGP Public Key (4096 bit)

Research

I am interested in applications of small-sized quantum computers (NISQ) to concrete optimization problems, fault-tolerant quantum processing, quantum architectures, quantum communication, quantum and classical cryptography and classical/quantum separation.

Work in progress

• Quantum software, quantum architectures
• Fault tolerance for higher dimensional systems
• Quantum resource estimation for cryptographic algorithms
• Classical/quantum separation, correlation measures

Referee service

Publications

For an up-to-date list, please see my CV, my arXiv feed or my Google Scholar profile.

Software

My personal GitHub repositories
The Quantum Software group at IQC

I contribute to open source software (and you should, too). Below is a list of some of my favourite projects/code snippets I developed:

• Quantum++
  – A modern C++11 general purpose quantum computing library, composed solely of template header files. It uses the Eigen 3 linear algebra library and, if available, the OpenMP multi-processing library. Status: active, version 1.3 released on 25 July 2019 under the MIT License.


• I am a proud contributor to the Open Quantum Safe liboqs PQC library.


• liboqs-cpp
  – A C++11 wrapper around Open Quantum Safe liboqs PQC library.


• Design patterns
  – My take on design patterns in modern C++ (C++11/C++14).


• spell
  – Tired of (mis)spelling your name during a phone call? spell.py does it for you, using phonetic alphabet(s) (NATO phonetic alphabet by default).
  • Usage:
    • python3 spell.py [-h] [--dict DICT] [--text TEXT]
    
    optional arguments:
         -h, --help show this help message and exit
         --dict DICT custom dictionary (in JSON format)
         --text TEXT text to be spelled, if omitted spells from the standard input


• pytexnumber
  – A Python 2/3 console program for renumbering latex references (labels).
  • Usage:
    • python3 py3texnumber.py - for the Python 3 version.
    • python py2texnumber.py - for the Python 2 version.
  
  
  • Description: replaces all labels in <in.tex> that match a given input <pattern>, such as \label{<pattern>...} and all corresponding references (\ref, \eqref, \pageref) with renumbered ones <replacement>idx, where idx counts the matching \label{<pattern>...} order of appearance, i.e. equals 1 for the first \label that matches the input pattern, 2 for the second etc. The file <in.tex> is left unchanged and the modifications are written to <out.tex>.
  
  
  • Example: consider a latex file <source.tex> having three labels, named, in order of appearance, \label{eqn5}, \label{eqn_important} and lastly \label{entropy}. Then the command
    • python3 py3texnumber.py in.tex out.tex eqn Eqn
    replaces \label{eqn5} by \label{Eqn1} (and also all references to eqn5 automatically become references to Eqn1) and replace \label{eqn_important} by \label{Eqn2} (again together with the corresponding references). The \label{entropy} remains unchanged since it does not match the input pattern \label{eqn...}. The results are saved to the file <out.tex>.


• cpptexnumber
  – The C++11 version of pytexnumber above. A C++98 version is also available.
  • Usage: same as pytexnumber above.


• GTexnumber
  – A GUI Java program for renumbering latex references (labels). The Java sources are included in the .jar files. The Netbeans project is located here.
  • Description: same as pytexnumber above, except that the user's input is performed through the graphical interface.
  
  
  • Usage: Unzip the archive then run the program with
    • java -jar GTexnumber.jar


• Texnumber
  – A console Java program for renumbering latex references (labels). The Java sources are included in the .jar files. The Netbeans project is located here.
  • Description: same as pytexnumber above.
  
  
  • Usage: Unzip the archive then run the program with
    • java -jar Texnumber.jar