22 citations · 52 across the 15 of their papers we have counts for
31 papers · 1 filter
Oracularization and Two-Prover One-Round Interactive Proofs against Nonlocal Strategies
Tsuyoshi Ito, Hirotada Kobayashi, Keiji Matsumoto
A central problem in quantum computational complexity is how to prevent entanglement-assisted cheating in multi-prover interactive proof systems. It is well-known that the standard…
Using Entanglement in Quantum Multi-Prover Interactive Proofs
Julia Kempe, Hirotada Kobayashi, Keiji Matsumoto +1
The central question in quantum multi-prover interactive proof systems is whether or not entanglement shared between provers affects the verification power of the proof system. We…
Self-teleportation and its application on LOCC estimation and other tasks
Keiji Matsumoto
A way to characterize quantum nonlocality is to see difference in the figure of merit between LOCC optimal protocol and globally optimal protocol in doing certain task, e.g., state…
Entanglement cost and distillable entanglement of symmetric states
Keiji Matsumoto
We compute entanglement cost and distillable entanglement of states supported on symmetric subspace. Not only giving general formula, we apply them to the output states of optimal…
Strong Super-additivity of the entanglement of formation for pure stabilizer states
David Fattal, Keiji Matsumoto
We prove the strong super-additivity of the entanglement of formation for stabilizer pure states, and the set of mixed states which minimize their average entropy of entanglement a…
Hypothesis testing for an entangled state produced by spontaneous parametric down conversion
Masahito Hayashi, Bao-Sen Shi, Akihisa Tomita +3
Generation and characterization of entanglement are crucial tasks in quantum information processing. A hypothesis testing scheme for entanglement has been formulated. Three designs…