Quantum computing research is a rapidly growing field that seeks to develop new computer technologies based on the principles of quantum mechanics. Unlike classical computers that use bits to represent information in either a 0 or 1 state, quantum computers use quantum bits, or qubits, which can exist in multiple states simultaneously, enabling them to perform calculations at a much faster rate.
Quantum computers must meet the following DiVincenzo criteria:
 A scalable physical system with wellcharacterized qubit
 The ability to initialize the state of the qubits to a simple fiducial state
 Long relevant decoherence times
 A "universal" set of quantum gates
 A qubitspecific measurement capability
Researchers in PQI have also been working to develop practical quantum hardware, such as superconducting circuits and photonic qubits, that can be used to build scalable quantum computers. Along with quantum hardware, quantum software also plays an essential role in quantum computation. Quantum software, especially quantum compilers, enable quantum computers to execute quantum algorithm more efficiently.
Finally, quantum computing research has also explored the potential applications of quantum computing in various fields, such as cryptography, machine learning, and chemistry. This is interdisciplinary between quantum mechanics and other traditional fields. Researchers in PQI believe that quantum computing has the potential to revolutionize many industries and solve some of the most challenging problems facing society today.
Specifically, researchers in PQI are investigating different aspects of quantum computing:
 Quantum architecture

 Prof. Jones' group is investigating quantum system codesign, including the design of basis gates, topologies, and transpilation from resonator devices to systems.
 Prof. Hatridge's group designs a modular quantum computer based on a quantum state router.
 Prof. Seshadreesan's group is working on architectures and protocols for quantum communications and networking.
 Quantum software

 Prof. Tang's group is working on compiler frameworks for the quantum computation of different qubits.
 Quantum algorithm

 Prof. O'Donnell's group is interested in the mathematical theory of quantum tomography to attack problems in the theory of quantum computation and quantum information.
 Quantum simulation

 Prof. Tang's group is interested in using GPU to accelerate quantum simulation.
 Prof. Arenas' group is interested in using tensor network algorithms to calculate the quantum states for different quantum materials.
 Prof. Givi's group is building and modeling quantum simulation for Aeroscience and Engineering. For example, turbulence.
 Quantum chemistry

 Prof.Gui's group is working on the design and synthesis of novel quantum materials in chemistry ways, such as superconductors, magnetic topological materials, and quantum spin liquids.
 Prof. Transue's group investigates molecules' role in quantum information science. More specifically, the development of molecules that can behave as qubits.
 Prof. Jordan's group is interested in many aspects of quantum chemistry, including the accommodation of excess charge by water clusters, longrange correlation effects, quantum Monte Carlo methods, and sustainability.
 New qubit technology

 Prof. Dutt's group is interested in building novel photonic qubits using Nitrogen vacancy (NV) centers.
 Prof. Frolov's group is interested in building qubits out of combinations of semiconductors and superconductors.
 Prof. Levy's group focuses on the development of new technologies to create a wide range of nanostructures for future qubits techniques.