Positioning and clock synchronization through entanglement
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TLDR
An accuracy gain over analogous protocols that employ classical resources is demonstrated and a quantum-cryptographic positioning applica- tion is given, which allows only trusted par- ties to learn the position of whatever must be localized.Abstract:
A method is proposed to employ entangled and squeezed light for determining the position of a party and for synchronizing distant clocks. An accuracy gain over analogous protocols that employ classical resources is demonstrated and a quantum-cryptographic positioning application is given, which allows only trusted parties to learn the position of whatever must be localized. The presence of a lossy channel and imperfect photodetection is considered. The advantages in using partially entangled states is discussed.read more
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Quantum metrology
TL;DR: It is proved that the typical quantum precision enhancement is of the order of the square root of the number of times the system is sampled, and it is pointed out the different strategies that permit one to attain this bound.
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Reference frames, superselection rules, and quantum information
TL;DR: This paper reviews the role of reference framesmore and superselection rules in the theory of quantum-information processing and finds that quantum unspeakable information becomes a new kind of resource that can be manipulated, depleted, quantified, etc.
Journal ArticleDOI
Quantum-enhanced positioning and clock synchronization
TL;DR: This work reports that quantum entanglement and squeezing can be employed to overcome the classical limits in procedures such as positioning systems, clock synchronization and ranging and uses frequency-entangled pulses to construct quantum versions of these protocols.
Repository
Bibliographic guide to the foundations of quantum mechanics and quantum information
TL;DR: A collection of references (papers, books, preprints, book reviews, Ph. D. thesis, patents, web sites, etc.), sorted alphabetically and classified by subject, on foundations of quantum mechanics and quantum information can be found in this article.
References
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Book
Optical Coherence and Quantum Optics
Leonard Mandel,Emil Wolf +1 more
TL;DR: In this article, the authors present a systematic account of optical coherence theory within the framework of classical optics, as applied to such topics as radiation from sources of different states of coherence, foundations of radiometry, effects of source coherence on the spectra of radiated fields, and scattering of partially coherent light by random media.
Book
Quantum Theory: Concepts and Methods
Asher Peres,Leslie E. Ballentine +1 more
TL;DR: In this article, the authors introduce the concept of complex vector space and describe a set of properties of composite systems, including Bell's Theorem, and the notion of spacetime symmetry.
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