193 citations · 2.1k across the 95 of their papers we have counts for
6 papers · 1 filter
Impossibility of Classically Simulating One-Clean-Qubit Computation
Keisuke Fujii, Hirotada Kobayashi, Tomoyuki Morimae +3
Deterministic quantum computation with one quantum bit (DQC1) is a restricted model of quantum computing where the input state is the completely mixed state except for a single cle…
The process matrix framework for a single-party system
Tomoyuki Morimae
The process matrix framework [O. Oreshkov, F. Costa, and C. Brukner, Nature Communications {\bf3}, 1092 (2012)] can describe general physical theory where locally operations are de…
Impossibility of perfectly-secure one-round delegated quantum computing for classical client
Tomoyuki Morimae, Takeshi Koshiba
Blind quantum computing protocols enable a client, who can generate or measure single-qubit states, to delegate quantum computing to a remote quantum server protecting the client's…
Classical simulatability of the one clean qubit model
Tomoyuki Morimae, Takeshi Koshiba
Deterministic quantum computation with one quantum bit (DQC1), or the one clean qubit model, [E. Knill and R. Laflamme, Phys. Rev. Lett. {\bf81}, 5672 (1998)] is a model of quantum…
Acausal measurement-based quantum computing
Tomoyuki Morimae
In the measurement-based quantum computing, there is a natural "causal cone" among qubits of the resource state, since the measurement angle on a qubit has to depend on previous me…
Highly-mixed measurement-based quantum computing and the one clean qubit model
Tomoyuki Morimae
We show that a highly-mixed state in terms of a large min-entropy is useless as a resource state for measurement-based quantum computation in the sense that if a classically effici…