191 citations · 1.6k across the 34 of their papers we have counts for
6 papers · 2 filters
Robustness- and weight-based resource measures without convexity restriction: Multicopy witness and operational advantage in static and dynamical quantum resource theories
Kohdai Kuroiwa, Ryuji Takagi, Gerardo Adesso +1
Quantum resource theories (QRTs) provide a unified framework to analyze quantum properties as resources for achieving advantages in quantum information processing. The generalized…
Every quantum helps: Operational advantage of quantum resources beyond convexity
Kohdai Kuroiwa, Ryuji Takagi, Gerardo Adesso +1
Identifying what quantum-mechanical properties are useful to untap a superior performance in quantum technologies is a pivotal question. Quantum resource theories provide a unified…
Arbitrary Amplification of Quantum Coherence in Asymptotic and Catalytic Transformation
Naoto Shiraishi, Ryuji Takagi
Quantum coherence is one of the fundamental aspects distinguishing classical and quantum theories. Coherence between different energy eigenstates is particularly important, as it s…
Mixed-state additivity properties of magic monotones based on quantum relative entropies for single-qubit states and beyond
Roberto Rubboli, Ryuji Takagi, Marco Tomamichel
We prove that the stabilizer fidelity is multiplicative for the tensor product of an arbitrary number of single-qubit states. We also show that the relative entropy of magic become…
When quantum memory is useful for dense coding
Ryuji Takagi, Masahito Hayashi
We discuss dense coding with copies of a specific preshared state between the sender and the receiver when the encoding operation is limited to the application of group represe…
Virtual quantum resource distillation
Xiao Yuan, Bartosz Regula, Ryuji Takagi +1
Distillation, or purification, is central to the practical use of quantum resources in noisy settings often encountered in quantum communication and computation. Conventionally, di…