Quantum Computing

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Quantum computer is recently gathering attention as a new computing paradigm where massively parallel computation is possible via quantum bits which have the capability of a quantum superposition of 0 and 1.  Quantum computers are considered to have calculation speeds that surpass conventional computation by far from this naturally massively parallel computing approach, especially in areas of cryptography, searching, optimization, medicine, just to name a few.

 

There are some candidates to realize the quantum bit used for quantum computing, as well as the calculation method. For example, the “gate model” can do general-purpose calculation like conventional computers and “quantum annealing” can solve specialized combinatorial optimization problems. We are conducting research to realize a quantum annealing machine using superconducting parametrons as quantum bits among the various candidates available. 

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One of the problems to realize a quantum computer using superconducting quantum bits is the enormous amount of wiring between the cryogenic environment and the room temperature environment. Thus, we aim to reduce the amount of wiring by using a synergistic hybrid of SFQ circuits for its super high speed operation, and AQFP circuits for its extremely low energy consumption and ultra-sensitivity to create a quantum computer controller that exists in the same cryogenic environment as the quantum bits.