Quantum.Tech USA 2025

June 2026

Massachusetts, United States

William McGann

CEO Quantum Computing Inc.

Bill currently serves as the Chief Technology Officer at Quantum Computing Inc. (QCI) - A new, innovative quantum solutions company located in Leesburg Virginia and Hoboken New Jersey, publicly traded on NASDAQ as QUBT.

QCI develops innovative quantum solutions providing both hardware and software products to create an onramp for commercial partners and customers seeking to make the “jump to the quantum era” without the need for deep domain knowledge or experience in quantum systems and effects.

A major underlying 30-year career focus has been to drive customer supported business strategies, through a lens of innovative technology solutions, and creating a seamless path to products for solving some of the world's greatest challenges in security, medicine and industrial applications.

Prior to serving as CTO at QCI, Bill served in numerous professional and executive and company-founder roles in the Physical Security Industry, most recently serving as the CTO at Leidos Security and Detection, where he lead a 230-perosn team of scientists and engineers focused on the design and development of state-of-the-art security detections systems for aviation, ports and borders and commercial infrastructure markets.

Bill has a long track record and deep domain expertise numerous areas of technology development and has held many professional roles, since 1990.

- 1985 to 1990: Chief Scientist – Radiation Monitoring Devices

- 1990 to 2002: Co-founder and Research and Development Director of Ion Track Instruments

- 2002 to 2010: Chief Technology Officer for GE Security, following the acquisition of Ion Track

- 2010 to 2012: Vice President of Engineering, UTC Global Fire and Security business

- 2012 to 2017: CEO of Implant Sciences – acquired by L3-Harris (2017)

- 2017 to 2019: CTO at L3Harris Technologies - Security and Detection Systems

- 2019 to 2021: CTO at Leidos, Security, Detection and Automation - 2022 to present: CTO and Chief of Operations at Quantum Computing Inc.

Bill's business development focus is strengthened by an underlying passion for turning credible science into practical technology. He has authored over 70 research proposals to the U.S. Government, numerous publications, and 23 patents in the areas of nuclear, chemical and biological detection technologies.

Bill holds a Ph.D. in Chemical Physics from the University of Connecticut at Storrs (1985) where he studied the molecular structure and dynamics of excited-state energy transfer in Photosynthesis using optical spectroscopy and magnetic resonance methods including Optically Detected Magnetic Resonance (ODMR) for the study of the excited state dynamics between the singlet-triplet state manifolds of Chlorophyll and light harvesting carotenoids.

Main Conference Day One

12:00 PM Fault-Tolerant Quantum Computing vs. NISQ—The Race to Scale Qubit Development

A technology showcase

As quantum hardware advances, the distinction between Noisy Intermediate-Scale Quantum (NISQ) systems and fault-tolerant quantum computing is becoming a central focus in the race to develop scalable quantum technologies. This panel will bring together the leaders driving these developments to  explore the challenges and breakthroughs in qubit development and the journey from NISQ systems to fully fault-tolerant quantum computers. 

 

Key topics to be addressed by these industry leaders include: 

  • What are the key differences between NISQ-era quantum systems and fault-tolerant quantum computing? 
  • How are researchers and industry working to increase qubit counts while improving qubit quality and coherence times? 
  • What are the practical challenges in scaling quantum hardware, and how do error correction and fault tolerance play a role in this progression? 
  • What are the real-world applications for NISQ systems, and how far are we from transitioning to fault-tolerant quantum machines capable of solving larger, more complex problems? 
  • How are industry and academia addressing the current limitations in qubit development, and what advancements can we expect in the near future for more robust quantum hardware? 

 

This session will provide insights into the evolving landscape of quantum hardware, the ongoing efforts to scale qubits, and the future potential of fault-tolerant quantum computing. 

Check out the incredible speaker line-up to see who will be joining William.

Download The Latest Agenda