Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Optical Fiber Communication Conference

Interaction-free measurements of quantum objects

Xingxiang Zhou, M. J. Feldman, Zheng-Wei Zhou, Guang‐Can Guo

Published Jan 1, 2001• 0 citations
Publisher

Abstract

We show that it is possible in principle to realize a unit-efficiency initial state preserving interaction-free measurements (IFM) of quantum objects characterized by their superpositions. Some generalized work is also discussed.
DOI
10.1364/icqi.2001.pa23

Related papers

“Interaction-free” measurements of quantum objects?

Andrew G. White, Paul G. Kwiat, Daniel F. V. James

It is now well established that the presence of an opaque classical object can be unambiguously determined by an "interaction-free" measurement (IFM), where the object and the probe never directly interact. For quantum objects, we examine "interaction-free" measurement (the object wavefunction is unchanged) and "interaction-free" preparation (the object wavefunction is changed without physical interaction) and find that in general, neither is possible. We propose using high efficiency IFM's as a quantum information bus to connect disjoint quantum systems.

Mysteries, Puzzles, and Paradoxes in Quantum Mechanics•Jan 1, 1999•0 citations

{open_quotes}Interaction-free{close_quotes} measurements of quantum objects?

Andrew G. White, Paul G. Kwiat, Daniel F. V. James

It is now well established that the presence of an opaque classical object can be unambiguously determined by an {open_quotes}interaction-free{close_quotes} measurement (IFM), where the object and the probe never directly interact. For quantum objects, we examine {open_quotes}interaction-free{close_quotes} measurement (the object wavefunction is unchanged) and {open_quotes}interaction-free{close_quotes} preparation (the object wavefunction is changed without physical interaction) and find that in general, neither is possible. We propose using high efficiency IFM{close_quote}s as a quantum information bus to connect disjoint quantum systems. {copyright} {ital 1999 American Institute of Physics.}

AIP conference proceedings•Mar 1, 1999•0 citations

Dynamical analysis of seemingly interaction-free measurements

Alfredo Luis, Luis Lorenzo Sánchez-Soto

A full quantum analysis of $100%$ efficient interaction-free measurements is presented. It is shown that it is possible to describe consistently the phenomenon in terms of an effective interaction between object and apparatus that disturbs measurable quantities of the observed system.

Physical Review A•Aug 1, 1998•10 citations

Interaction-Free Measurements

Lev Vaidman A

Abstract I am greatly indebted to Roger Penrose. I have learned very much from his papers, from his exciting books, and from our (too short) conversations. I am most grateful to Roger for developing the idea of Avshalom Elitzur and myself on interaction-free measurements (IFM). The version of IFM Penrose described in his book (1994) is conceptually different from our original proposal, and although it is much more difficult for practical applications it has the advantage of demonstrating even more striking quantum phenomena. So I will start with presenting Penrose’s version of IFM.

•Apr 30, 1998•19 citations

Experimental demonstration of interaction-free measurements

Paul G. Kwiat, Harald Weinfurter, Anton Zeilinger

It is now well-understood that the complementary wave- and particle-like natures of quanta enable one to make measurements that are “interaction-free” -- one can determine the presence or absence of an object, even a completely absorbing object, without any photons being absorbed. The first proposal of such a scheme was limited to an efficiency of 50% -- at most half of the measurements could be interaction free [1]. By using an application of the Quantum Zeno effect, one can in fact have the fraction of interaction-free measurements arbitrarily close to one [2].

•Jul 14, 1996•0 citations

Interaction-Free Measurements

Lev Vaidman A

A brief review of interaction-free measurements (IFM) is presented. The IFM is a solution of a quantum puzzle: How to test a bomb which explodes on every test without exploding it? This paper was given in the Oxford conference in honor of Roger Penrose.

arXiv:quant-ph/9610033•Oct 21, 1996•2 citations
It is now well established that the presence of an opaque classical object can be unambiguously determined by an "interaction-free" measurement (IFM), where the object and the probe never directly interact. For quantum objects, we examine "interaction-free" measurement (the object wavefunction is unchanged) and "interaction-free" preparation (the object wavefunction is changed without physical interaction) and find that in general, neither is possible. We propose using high efficiency IFM's as a quantum information bus to connect disjoint quantum systems.
It is now well established that the presence of an opaque classical object can be unambiguously determined by an {open_quotes}interaction-free{close_quotes} measurement (IFM), where the object and the probe never directly interact. For quantum objects, we examine {open_quotes}interaction-free{close_quotes} measurement (the object wavefunction is unchanged) and {open_quotes}interaction-free{close_quotes} preparation (the object wavefunction is changed without physical interaction) and find that in general, neither is possible. We propose using high efficiency IFM{close_quote}s as a quantum information bus to connect disjoint quantum systems. {copyright} {ital 1999 American Institute of Physics.}
A full quantum analysis of 100100%100 efficient interaction-free measurements is presented. It is shown that it is possible to describe consistently the phenomenon in terms of an effective interaction between object and apparatus that disturbs measurable quantities of the observed system.
Abstract I am greatly indebted to Roger Penrose. I have learned very much from his papers, from his exciting books, and from our (too short) conversations. I am most grateful to Roger for developing the idea of Avshalom Elitzur and myself on interaction-free measurements (IFM). The version of IFM Penrose described in his book (1994) is conceptually different from our original proposal, and although it is much more difficult for practical applications it has the advantage of demonstrating even more striking quantum phenomena. So I will start with presenting Penrose’s version of IFM.
It is now well-understood that the complementary wave- and particle-like natures of quanta enable one to make measurements that are “interaction-free” -- one can determine the presence or absence of an object, even a completely absorbing object, without any photons being absorbed. The first proposal of such a scheme was limited to an efficiency of 50% -- at most half of the measurements could be interaction free [1]. By using an application of the Quantum Zeno effect, one can in fact have the fraction of interaction-free measurements arbitrarily close to one [2].