William Ward

Ph.D. Candidate | Quantum Hardware: Cryogenics, Photonics, RF & Control

About me

I am an Applied Physics Ph.D. candidate in the Quantum Engineering Laboratory at the University of Michigan, advised by Dr. Zheshen Zhang. My research focuses on experimental quantum optics and cryogenic measurement platforms for quantum interconnect and optomechanical systems. I lead the conception, construction, and characterization of quantum-optics experimental platforms, and I build and operate cryogenic electromechanical testbeds. This includes end-to-end procurement, assembly, and validation of a $600k dilution refrigerator system and continuous operation of a Bluefors LD-400 at a 7 mK base temperature. My technical scope spans vacuum and cryogenic systems, free-space and fiber optical alignment, RF locking and PID feedback, and single-photon detection, with a strong software/hardware engineering foundation.

Check out my Google Scholar Profile!
Featured Media: U-M quantum testbed enables remote experiments
Featured Media: $9M for exploring the fundamental limits of entangled quantum sensor networks
Credit: Abdur-Raheem Al-Hallak, Electrical and Computer Engineering
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Publications

Research Platforms

Quantum Multiple Access Channel

As technical lead for the quantum MAC platform, I oversee the full experimental lifecycle, including system design, optical and electronic integration, timing and control infrastructure, and statistical performance analysis. This platform aims to deliver scalable, near-term integration of quantum resources with classical communication channels under real-world constraints to establish the feasability of quantum network integration. Building and validating MAC behavior is a step toward scalable quantum networks and modular quantum systems, where many nodes must communicate through shared infrastructure rather than isolated point-to-point links. I also mentor incoming students, providing hands-on training in quantum optics, measurement techniques, and experimental best practices to ensure long-term lab capability and rigor.

Quantum Optomechanics

My work in cryogenic optomechanics centers on experimental design, cryostat integration, and precision characterization of optomechanical devices at low temperature. I develop and execute measurement workflows spanning optical alignment, microwave interfacing, and noise performance analysis to validate device behavior in the quantum regime.

Quantum Target Detection

I lead the full experimental lifecycle for quantum target detection studies, spanning experimental design, system implementation, measurement execution, and theory-informed data analysis. My work focuses on rigorously characterizing quantum-enhanced detection performance and validating experimental results against statistical decision theory models.

Credit: Abdur-Raheem Al-Hallak, Electrical and Computer Engineering
Credit: Abdur-Raheem Al-Hallak, Electrical and Computer Engineering

Academic + Professional Projects

Passive Power Harvesting & Data Aquisition Capstone Project

In this project, my group and I designed and built a passive, wireless data acquisition device. The device harvests power from incident sub-1GHz radio waves, performs dynamic sensor measurements and digitization, and transmits the data over free space with infrared radiation. The device has no battery and no power source, all of the energy the device utilizes is harvested from incident radio waves and converted into a useable power source via on-board analog circuitry.

Ultrasonic Range Finder Design Project

In this project, my group and I designed and built a functional Ultrasonic Ranger Finder. We built this device using piezoelectric transducers and base-level electronics. This project included analog electronics design work (amplifiers, filters etc.), as well as digital design work (latches, counters, display). The device was shown to be accurate to within 1 centimeter within a range of 99 centimeters.

Relevant Courses

Resonant MEMs (Graduate)

Grade: AUD

Microwave Circuits (Graduate)

Grade: A-

Classical Optics (Graduate)

Grade: A

Quantum Optics (Graduate)

Grade: A

Classical Field Theory & Electromagnetism II (Graduate)

Grade: A+

Applied Quantum Mechanics (Graduate)

Grade: A+

Statistical Mechanics (Graduate)

Grade: A-

Classical Field Theory & Electromagnetism I (Graduate)

Grade: A

Quantum Optics and Metrology (Undergraduate)

Grade: A+

Nanoscale Semiconductor Devices (Undergraduate)

Grade: A+

Computational Multiphysics (Undergraduate)

Grade: A+

Mathematical Physics I & II (Undergraduate)

Grade: A+

Thermal Systems Design (Undergraduate)

Grade: A+

Electronics I: Circuits with Non-Linear and Active Components (Undergraduate)

Grade: A+

Principles of Solid-State Materials and Devices (Undergraduate)

Grade: A+

Numerical Methods for Engineering (Undergraduate)

Grade: A+

Electronics II: Embedding and Programming a Micro-Controller (Undergraduate)

Grade: A+

Fundamentals of Physical Optics (Undergraduate)

Grade: A+

Signals and Systems for Engineering (Undergraduate)

Grade: A+

Semiconductor Junction Devices (Undergraduate)

Grade: A+

Data Structures, Algorithms and Discrete Mathematics (Undergraduate)

Grade: A+

Statistical Mechanics (Undergraduate)

Grade: A+

My Academic GitHub