Work

Quantum communication via a continuously monitored dual spin chain

Year: 2007

Type: article

Abstract: We analyze a recent protocol for the transmission of quantum states via a dual spin chain [Burgarth and Bose, Phys. Rev. A 71, 052315 (2005)] under the constraint that the receiver's measurement strength is finite. That is, we consider the channel where the ideal, instantaneous, and complete von Neumann measurements are replaced with a more realistic continuous measurement. We show that for optimal performance the measurement strength must be ``tuned'' to the channel spin-spin coupling, and once this is done, one is able to achieve a similar transmission rate to that obtained with ideal measurements. The spin chain protocol thus remains effective under measurement constraints.

Source: Physical Review A

DOI: 10.1103/physreva.75.062328

Authors: Kosuke Shizume, Kurt Jacobs, Daniel Burgarth, Sougato Bose

Institutions: University of Tsukuba, Louisiana State University, University of Massachusetts Boston, University College London

Language: English

Topic: Quantum Information and Cryptography

Subfield: Artificial Intelligence

Field: Computer Science

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W2057795057

FWCI: 1.179

Cites: 32

Cited by: 17

Related to: 10