3.3k citations · 10.3k across the 167 of their papers we have counts for
6 papers · 2 filters
Power of one non-clean qubit
Tomoyuki Morimae, Keisuke Fujii, Harumichi Nishimura
The one-clean qubit model (or the DQC1 model) is a restricted model of quantum computing where only a single qubit of the initial state is pure and others are maximally mixed. Alth…
Verifiable fault-tolerance in measurement-based quantum computation
Keisuke Fujii, Masahito Hayashi
Quantum systems, in general, output data that cannot be simulated efficiently by a classical computer, and hence is useful for solving certain mathematical problems and simulating…
Noise Threshold of Quantum Supremacy
Keisuke Fujii
Demonstrating quantum supremacy, a complexity-guaranteed quantum advantage against over the best classical algorithms by using less universal quantum devices, is an important near-…
Quantum Merlin-Arthur with noisy channel
Tomoyuki Morimae, Keisuke Fujii, Harumichi Nishimura
What happens if in QMA the quantum channel between Merlin and Arthur is noisy? It is not difficult to show that such a modification does not change the computational power as long…
Fault-tolerant verifiable blind quantum computing with logical state remote preparation
Yuki Takeuchi, Keisuke Fujii, Tomoyuki Morimae +1
Verifiable blind quantum computing allows a client with poor quantum devices to delegate universal quantum computing to a remote quantum server in such a way that the client's priv…
Harnessing disordered quantum dynamics for machine learning
Keisuke Fujii, Kohei Nakajima
Quantum computer has an amazing potential of fast information processing. However, realisation of a digital quantum computer is still a challenging problem requiring highly accurat…