Quantum scissors for noiseless linear amplification of polarization frequency hyper-encoded coherent state

Abstract Quantum scissor (QS) is a powerful tool to realize the optical truncation and noiseless linear amplification (NLA) of the Fock state. The hyper-encoding technology which encodes messages in two or more degrees of freedom of a photon is a promising tool for increasing the channel capacity of...

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Bibliographic Details
Published inEurophysics letters Vol. 140; no. 1; pp. 18003 - 18009
Main Authors Zhong, Wei, Li, Yu-Peng, Sheng, Yu-Bo, Zhou, Lan
Format Journal Article
LanguageEnglish
Published Les Ulis EDP Sciences, IOP Publishing and Società Italiana di Fisica 01.10.2022
IOP Publishing
Subjects
Channel capacity
Coding
Cutting tools
Data processing
Fock state
Photons
Polarization
Quantum computing
Quantum entanglement
Quantum phenomena
Software
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Summary:Abstract Quantum scissor (QS) is a powerful tool to realize the optical truncation and noiseless linear amplification (NLA) of the Fock state. The hyper-encoding technology which encodes messages in two or more degrees of freedom of a photon is a promising tool for increasing the channel capacity of photons and has been widely used in quantum computing and quantum communication fields. Here, we propose the one-photon and three-photon QSs for the frequency-encoded and polarization frequency hyper-encoded coherent states, which can realize the one-order and three-order truncation and NLA of the coherent state, and preserve the encoded features of the photons. The quantum scissors for the hyper-encoded coherent state would introduce some unwanted disturb items with small probability. Our QSs can be extended to distill the hyper-encoded multi-spatial-mode entanglement. Our QSs have application potential in the future quantum information processing field.
ISSN:0295-5075
1286-4854
DOI:10.1209/0295-5075/ac9157