Quantum information capsule and information delocalization by entanglement in multiple-qubit systems

Koji Yamaguchi, Naoki Watamura, Masahiro Hotta

Research output: Contribution to journalArticlepeer-review

Abstract

Where do entangled multiple-qubit systems store information? For information injected into a qubit, this question is nontrivial and interesting since the entanglement delocalizes the information. So far, a common picture is that of a qubit and its purification partner sharing the information quantum mechanically. Here, we introduce a new picture of a single qubit in the correlation space, referred to as quantum information capsule (QIC), confining the information perfectly. This picture is applicable for the entangled multiple-qubit system in an arbitrary state. Unlike the partner picture, in the QIC picture, by swapping the single-body state, leaving other subsystems untouched, the whole information can be retrieved out of the system. After the swapping process, no information remains in the system.

Original languageEnglish
JournalUnknown Journal
Publication statusPublished - 2018 Nov 8

Keywords

  • Black hole information loss problem
  • Quantum entanglement
  • Quantum information
  • Quantum memory

ASJC Scopus subject areas

  • General

Fingerprint Dive into the research topics of 'Quantum information capsule and information delocalization by entanglement in multiple-qubit systems'. Together they form a unique fingerprint.

Cite this