David Deen: Honeywell: Quantum Information Processing with the Trapped-Ion Quantum CCD Architecture

Date and Time
Elings Hall 1601
Hosted By


2:00 pm - 3:00 pm


David Deen
Research Scientist
Honeywell Quantum Solutions


David Deen is a lead physicist with Honeywell Quantum Solutions where he leads the development effort for cryogenic electronics and is involved in ion trap fabrication, integrated photonics, and other future ion trap architectural advancements. He joined Honeywell in 2018 after several R&D stints in the semiconductor and HDD industries. Prior to his industrial research he was a post-doctoral researcher at the University of Minnesota Electrical and Computer Engineering after serving as a research scientist at the Naval Research Laboratory, Washington DC.

He earned is MS and PhD degrees in Electrical Engineering at the University of Notre Dame in 2007 and 2010, respectively. He also has a B.S. in Engineering Physics from the University of Oklahoma. His research interests include cryogenic electronics, photonics, and ion trap design for quantum applications, transport in semiconductors, semiconductor and spintronic devices, and magnetics. He has over 40 peer-reviewed scientific publications, 18 issued patents (15 issued, 3 applied for), and 19 presentations at international conferences and universities.



Honeywell Quantum Solutions launched its first commercial trapped-ion quantum computer in 2020, designed around the quantum charge-coupled device (QCCD) architecture. By applying fast transport operations to reorder and position ion qubits across multiple trapping zones simultaneously on the device, the QCCD architecture creates a fully-connected, high fidelity, and scalable quantum computer.  These systems offer the unique capability of performing conditional quantum operations dependent on mid-circuit measurement outcomes, and qubits can be re-used in the same circuit after measurements. This feature allows users to perform efficient quantum simulations and execute repeated cycles of quantum error correction. Recently, the 10-qubit System Model H1 became the first quantum computer to pass the quantum volume 1,024 benchmark, the largest quantum volume ever measured on a commercial quantum computer. Future generation systems will incorporate new technologies such as two-dimensional trap architectures and integrated photonics, in order to scale the number of physical qubits and further increase system performance.

In this talk I will give an overview of quantum computing within the context of trapped ions. This will include a description of the concept, configuration, and fabrication of Honeywell Quantum Solution’s surface ion traps. Fundamental to the QCCD architecture is the ability to spatially reorder and transport ions across the trap. Transport primitives will be shown and a description of ion state preparation and quantum state readout will be given. In the later portion of the talk I will address several critical sub-system integration efforts that will be key enablers for future scaling of the QCCD architecture.