TY - JOUR
T1 - Locality and nonlocality in the interaction-free measurement
AU - Rohrlich, Daniel
AU - Aharonov, Yakir
AU - Landsberger, Tomer
N1 - Funding Information:
This publication was made possible through the support of grants from the John Templeton Foundation (Project ID 43297)and from the Israel Science Foundation (grant no. 1190/13). The opinions expressed in this publication are those of the authors and do not necessarily reflect the views of either of these supporting foundations.
Publisher Copyright:
© The Authors, published by EDP Sciences.
PY - 2018/8/3
Y1 - 2018/8/3
N2 - We present a paradox involving a particle and a mirror. They exchange a nonlocal quantity, modular angular momentum Lz mod 2ħ, but there seems to be no local interaction between them that allows such an exchange. We demonstrate that the particle and mirror do interact locally via a weak local current Lz mod 2ħw. In this sense, we transform the “interaction-free measurement" of Elitzur and Vaidman, in which two local quantities (the positions of a photon and a bomb in the two arms of a Mach-Zehnder interferometer) interact nonlocally, into a thought experiment in which two nonlocal quantities (the weak modular angular momentum of the particle and of the mirror) interact locally.
AB - We present a paradox involving a particle and a mirror. They exchange a nonlocal quantity, modular angular momentum Lz mod 2ħ, but there seems to be no local interaction between them that allows such an exchange. We demonstrate that the particle and mirror do interact locally via a weak local current Lz mod 2ħw. In this sense, we transform the “interaction-free measurement" of Elitzur and Vaidman, in which two local quantities (the positions of a photon and a bomb in the two arms of a Mach-Zehnder interferometer) interact nonlocally, into a thought experiment in which two nonlocal quantities (the weak modular angular momentum of the particle and of the mirror) interact locally.
UR - http://www.scopus.com/inward/record.url?scp=85053218964&partnerID=8YFLogxK
U2 - 10.1051/epjconf/201818202105
DO - 10.1051/epjconf/201818202105
M3 - Conference article
AN - SCOPUS:85053218964
SN - 2101-6275
VL - 182
JO - EPJ Web of Conferences
JF - EPJ Web of Conferences
M1 - 02105
T2 - 6th International Conference on New Frontiers in Physics, ICNFP 2017
Y2 - 17 August 2017 through 29 August 2017
ER -