Multi-mode bosonic quantum computing with superconducting cavities

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The quantum computer is expected to offer dramatically improved efficiency in countless important computational tasks. Bosonic systems have been regarded as promising quantum computing architectures due to many fundamental and practical advantages. However, developing algorithms and control strategies for bosonic quantum computers are generally challenging due to the many more available quantum states; tackling these challenges is the research focus of Lau group at SFU. This Alliance International Quantum grant is intended to establish a collaboration to implement the bosonic algorithms and control strategies developed by Lau group on the multi-mode superconducting cavity device developed by Chakram group at Rutgers University. The device by Chakram group incorporates exceptional controllability and high quality factors, it is thus a versatile platform for implementing bosonic quantum computing. As a pioneer project, this Catalyst grant will support the investigation of realizing bosonic-qubit entanglement conversion. Successfully realizing this scheme can convert the bosonic entanglement, which can be generated extremely efficiently, to qubit entanglement, which can be used to implement a wide range of quantum computing algorithms. This will significantly boost the development of practical quantum computers.