Protective measurement—a new quantum measurement paradigm: Detailed description of the first realization

Enrico Rebufello; Fabrizio Piacentini; Alessio Avella; Rudi Lussana; Federica Villa; Alberto Tosi; Marco Gramegna; Giorgio Brida; Eliahu Cohen; Lev Vaidman; Ivo Pietro Degiovanni; Marco Genovese

doi:10.3390/app11094260

Protective measurement—a new quantum measurement paradigm: Detailed description of the first realization

Enrico Rebufello, Fabrizio Piacentini, Alessio Avella, Rudi Lussana, Federica Villa, Alberto Tosi, Marco Gramegna, Giorgio Brida, Eliahu Cohen, Lev Vaidman, Ivo Pietro Degiovanni, Marco Genovese

Tel Aviv University, Bar-Ilan University

Research output: Contribution to journal › Article › peer-review

Abstract

We present a detailed description of the experiment realizing for the first time a protective measurement, a novel measurement protocol which combines weak interactions with a “protection mechanism” preserving the measured state coherence during the whole measurement process. Furthermore, protective measurement allows finding the expectation value of an observable, i.e., an inherently statistical quantity, by measuring a single particle, without the need for any statistics. This peculiar property, in sharp contrast to the framework of traditional (projective) quantum measurement, might constitute a groundbreaking advance for several quantum technology related fields.

Original language	English
Article number	4260
Journal	Applied Sciences (Switzerland)
Volume	11
Issue number	9
DOIs	https://doi.org/10.3390/app11094260
State	Published - 1 May 2021

Keywords

Protective measurements
Quantum measurements
Quantum optics

All Science Journal Classification (ASJC) codes

General Materials Science
Instrumentation
General Engineering
Process Chemistry and Technology
Computer Science Applications
Fluid Flow and Transfer Processes

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10.3390/app11094260

Cite this

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abstract = "We present a detailed description of the experiment realizing for the first time a protective measurement, a novel measurement protocol which combines weak interactions with a “protection mechanism” preserving the measured state coherence during the whole measurement process. Furthermore, protective measurement allows finding the expectation value of an observable, i.e., an inherently statistical quantity, by measuring a single particle, without the need for any statistics. This peculiar property, in sharp contrast to the framework of traditional (projective) quantum measurement, might constitute a groundbreaking advance for several quantum technology related fields.",

keywords = "Protective measurements, Quantum measurements, Quantum optics",

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AU - Rebufello, Enrico

AU - Piacentini, Fabrizio

AU - Avella, Alessio

AU - Lussana, Rudi

AU - Villa, Federica

AU - Tosi, Alberto

AU - Gramegna, Marco

AU - Brida, Giorgio

AU - Cohen, Eliahu

AU - Vaidman, Lev

AU - Degiovanni, Ivo Pietro

AU - Genovese, Marco

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Protective measurement—a new quantum measurement paradigm: Detailed description of the first realization

Abstract

Keywords

All Science Journal Classification (ASJC) codes

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