Exploring optical SETI's middle ground

Stanton, R. H.

doi:10.1016/j.actaastro.2018.05.061

Cited by 3 publications

(1 citation statement)

References 14 publications

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“…A useful optical SETI experiment would be to time-tag incoming photons with ps accuracy using precise high time-resolution photon counters (Gol'tsman et al 2001;Prochazka et al 2013). Time-based correlations can be determined in post with data analysis, such as Fourier transforms and autocorrelation functions, building on the proposal by Leeb et al (2013) and Stanton (2019). These experiments can test incoming sources (e.g., starlight) for the presence of time-bin encoding, which is one way of encoding the quantum information.…”

Section: Fast Photon Counters and Time-bin Encodingmentioning

confidence: 99%

Searching for interstellar quantum communications

Hippke

2021

Preprint

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The modern search for extraterrestrial intelligence (SETI) began with the seminal publications of Cocconi & Morrison (1959) and Schwartz & Townes (1961), who proposed to search for narrow-band signals in the radio spectrum, and for optical laser pulses. Over the last six decades, more than one hundred dedicated search programs have targeted these wavelengths; all with null results. All of these campaigns searched for classical communications, that is, for a significant number of photons above a noise threshold; with the assumption of a pattern encoded in time and/or frequency space. I argue that future searches should also target quantum communications. They are preferred over classical communications with regards to security and information efficiency, and they would have escaped detection in all previous searches. The measurement of Fock state photons or squeezed light would indicate the artificiality of a signal. I show that quantum coherence is feasible over interstellar distances, and explain for the first time how astronomers can search for quantum transmissions sent by ETI to Earth, using commercially available telescopes and receiver equipment.

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Section: Fast Photon Counters and Time-bin Encodingmentioning

confidence: 99%

Searching for interstellar quantum communications

Hippke

2021

Preprint

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Differential-geometry-based multi-dimensional joint position-velocity estimation using Crab pulsar profile distortion

LIU,

ZHANG,

NING

et al. 2024

Chinese Journal of Aeronautics

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Searching for Interstellar Quantum Communications

Hippke

2021

View full text Add to dashboard Cite

The modern search for extraterrestrial intelligence began with the seminal publications of Cocconi & Morrison and Schwartz & Townes, who proposed searching for narrowband signals in the radio spectrum and optical laser pulses. Over the last six decades, more than 100 dedicated search programs have targeted these wavelengths, all with null results. All of these campaigns searched for classical communications, that is, for a significant number of photons above a noise threshold, with the assumption of a pattern encoded in time and/or frequency space. I argue that future searches should also target quantum communications. They are preferred over classical communications with regard to security and information efficiency, and they would have escaped detection in all previous searches. The measurement of Fock state photons or squeezed light would indicate the artificiality of a signal. I show that quantum coherence is feasible over interstellar distances and explain for the first time how astronomers can search for quantum transmissions sent by ETI to Earth using commercially available telescopes and receiver equipment.

show abstract

Exploring optical SETI's middle ground

Cited by 3 publications

References 14 publications

Searching for interstellar quantum communications

Searching for interstellar quantum communications

Differential-geometry-based multi-dimensional joint position-velocity estimation using Crab pulsar profile distortion

Searching for Interstellar Quantum Communications

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