Coherent-state phase concentration by quantum probabilistic amplification

2009/07/14 by Petr Marek, Radim Filip · 94 citations
Computer Science · Engineering · Physics and Astronomy · #Algorithm #Artificial intelligence #Coherent states #Computer science #Detector #Electronic engineering #Engineering #Noise (video) #Optics #Phase (matter) #Photon #Physics #Probabilistic logic #Quantum #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum mechanics #Quantum optics and atomic interactions #State (computer science) #quant-ph

paper · pdf · doi:10.1103/physreva.81.022302

published in Physical Review A 81(2) (American Physical Society)

arxiv created 2009/07/14 · openalex publication_date 2010/02/04 · arxiv updated 2015/05/13 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We propose a probabilistic measurement-induced amplification for coherent states. The amplification scheme uses a counterintuitive architecture: a thermal noise addition (instead of a single-photon addition) followed by a feasible multiple-photon subtraction using a realistic photon-number-resolving detector. It allows one to substantially amplify weak coherent states and simultaneously reduce their phase uncertainty, which is impossible when using a deterministic Gaussian amplifier.

Citations

• An avalanche‐photodiode-based photon-number-resolving detector
• Noise-free high-efficiency photon-number-resolving detectors
• Manipulating quantum entanglement with atoms and photons in a cavity
• Photon-number resolution using time-multiplexed single-photon detectors
• Tomography of quantum detectors
• Quantum limits on noise in linear amplifiers
• The Quantum Theory of Optical Coherence
• Universal Optical Amplification without Nonlinearity