No-partial erasure of quantum information

Pati, Arun K. ; Sanders, Barry C. (2006) No-partial erasure of quantum information Physics Letters A, 359 (1). pp. 31-36. ISSN 0375-9601

Full text not available from this repository.

Official URL: http://www.sciencedirect.com/science/article/pii/S...

Related URL: http://dx.doi.org/10.1016/j.physleta.2006.05.077

Abstract

In complete erasure any arbitrary pure quantum state is transformed to a fixed pure state by irreversible operation. Here we ask if the process of partial erasure of quantum information is possible by general quantum operations, where partial erasure refers to reducing the dimension of the parameter space that specifies the quantum state. We prove that quantum information stored in qubits and qudits cannot be partially erased, even by irreversible operations. The ‘no-partial erasure’ theorem applies to spin and bosonic coherent states, and continuous variable quantum information schemes as well. Our theorem suggests an integrity principle that quantum information is indivisible.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
ID Code:105311
Deposited On:09 Mar 2018 11:39
Last Modified:09 Mar 2018 11:39

Repository Staff Only: item control page