Measuring quantum input–output processes: phase-space representation of transformations

✍ Scribed by A. Luis; L.L. Sánchez-Soto

• Book ID: 104337765
• Publisher: Elsevier Science
• Year: 1999
• Tongue: English
• Weight: 192 KB
• Volume: 261
• Category: Article
• ISSN: 0375-9601
• DOI: 10.1016/s0375-9601(99)00598-8

✦ Synopsis

We examine two practical arrangements allowing the whole characterization of an arbitrary quantum input-output process. We show that the statistics of the measurements provide an informationally complete phase-space representation of the transformation. These points are illustrated with the example of an amplifier.