Coherent-state phase concentration by quantum probabilistic amplification

Abstract

We propose novel coherent-state phase concentration by probabilistic measurement-induced ampli- fication. The amplification scheme uses novel architecture, thermal noise addition (instead of single photon addition) followed by feasible multiple photon subtraction using realistic photon-number resolving detector. It allows to substantially amplify weak coherent states and simultaneously reduce their phase uncertainty, contrary to the deterministic amplifier.

References in corpus (8)

• Measuring measurement
• Photon number resolution using a time-multiplexed single-photon detector
• Experimental nonclassicality of single-photon-added thermal light states
• An avalanche-photodiode-based photon-number-resolving detector
• Phase detection at the quantum limit with multi-photon Mach-Zehnder interferometry
• Engineering quantum operations on traveling light beams by multiple photon addition and subtraction
• Phase estimation for thermal Gaussian states
• Universal optical amplification without nonlinearity

Cited by in corpus (52)

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• Subtraction better than addition: Entanglement in multimode squeezed vacuum post-interface with photons
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