20 citations · 45 across the 7 of their papers we have counts for
4 papers · 1 filter
Complexity of causal order structure in distributed quantum information processing and its trade-off with entanglement
Eyuri Wakakuwa, Akihito Soeda, Mio Murao
We prove a trade-off relation between the entanglement cost and classical communication complexity of causal order structure of a protocol in distributed quantum information proces…
Reversing Unknown Quantum Transformations: Universal Quantum Circuit for Inverting General Unitary Operations
Marco Túlio Quintino, Qingxiuxiong Dong, Atsushi Shimbo +2
Given a quantum gate implementing a -dimensional unitary operation , without any specific description but , and permitted to use times, we present a universal probab…
Implementing positive maps with multiple copies of an input state
Qingxiuxiong Dong, Marco Túlio Quintino, Akihito Soeda +1
Valid transformations between quantum states are necessarily described by completely positive maps, instead of just positive maps. Positive but not completely positive maps such as…
Equivalence determination of unitary operations
Atsushi Shimbo, Akihito Soeda, Mio Murao
We study equivalence determination of unitary operations, a task analogous to quantum state discrimination. The candidate states are replaced by unitary operations given as a quant…