54 citations · 165 across the 4 of their papers we have counts for
10 papers
Multi-particle entanglement manipulation under positive partial transpose preserving operations
Satoshi Ishizaka, Martin B. Plenio
We consider the transformation of multi-partite states in the single copy setting under positive-partial-transpose-preserving operations (PPT-operations) and obtain both qualitativ…
Bound entanglement provides convertibility of pure entangled states
Satoshi Ishizaka
I show that two distant parties can transform pure entangled states to arbitrary pure states by stochastic local operations and classical communication (SLOCC) at the single copy l…
Binegativity and geometry of entangled states in two qubits
Satoshi Ishizaka
We prove that the binegativity is always positive for any two-qubit state. As a result, as suggested by the previous works, the asymptotic relative entropy of entanglement in two q…
Analytical formula connecting entangled state and the closest disentangled state
Satoshi Ishizaka
The separable state closest to a given entangled state in the relative entropy measure is called the closest disentangled state. We provide an analytical formula connecting the ent…
The reduction of the closest disentangled states
Satoshi Ishizaka
We study the closest disentangled state to a given entangled state in any system (multi-party with any dimension). We obtain the set of equations the closest disentangled state mus…
Restoration of Entanglement by Spectral Filters
K. Usami, Y. Nambu, S. Ishizaka +4
We experimentally demonstrate that entanglement of bi-photon polarization state can be restored by spectral filters. This restoration procedure can be viewed as a new class of quan…