Quantum Cheshire Cats

Sandu Popescu; Y Aharonov; D Rohrlich; Paul Skrzypczyk

Quantum Cheshire Cats

Sandu Popescu, Y Aharonov, D Rohrlich, Paul Skrzypczyk

School of Physics

Research output: Contribution to journal › Article (Academic Journal) › peer-review

173 Citations (Scopus)

Abstract

In this paper we present a quantum Cheshire Cat. In a pre- and post-selected experiment we find the Cat in one place, and its grin in another. The Cat is a photon, while the grin is its circular polarization.

Original language	English
Article number	113015
Journal	New Journal of Physics
Volume	15
Early online date	3 Feb 2012
Publication status	Published - 7 Nov 2013

Keywords

quantum
padaroxes
foundation
quantum effects
weak measurements

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Curiouser and curiouser: delving into quantum Cheshire cats
Collins, D. G. (Interviewee), Popescu, S. (Speaker), Aharonov, Y. (Interviewee) & Skrzypczyk, P. (Contributor)
29 Apr 2025
Activity: Other activity types › Media coverage or participation

Cite this

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title = "Quantum Cheshire Cats",

abstract = " In this paper we present a quantum Cheshire Cat. In a pre- and post-selected experiment we find the Cat in one place, and its grin in another. The Cat is a photon, while the grin is its circular polarization.",

keywords = "quantum, padaroxes, foundation, quantum effects, weak measurements",

author = "Sandu Popescu and Y Aharonov and D Rohrlich and Paul Skrzypczyk",

year = "2013",

month = nov,

day = "7",

language = "English",

volume = "15",

journal = "New Journal of Physics",

issn = "1367-2630",

publisher = "Institute of Physics Publishing",

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TY - JOUR

T1 - Quantum Cheshire Cats

AU - Popescu, Sandu

AU - Aharonov, Y

AU - Rohrlich, D

AU - Skrzypczyk, Paul

PY - 2013/11/7

Y1 - 2013/11/7

N2 - In this paper we present a quantum Cheshire Cat. In a pre- and post-selected experiment we find the Cat in one place, and its grin in another. The Cat is a photon, while the grin is its circular polarization.

AB - In this paper we present a quantum Cheshire Cat. In a pre- and post-selected experiment we find the Cat in one place, and its grin in another. The Cat is a photon, while the grin is its circular polarization.

KW - quantum

KW - padaroxes

KW - foundation

KW - quantum effects

KW - weak measurements

M3 - Article (Academic Journal)

SN - 1367-2630

VL - 15

JO - New Journal of Physics

JF - New Journal of Physics

M1 - 113015

ER -

Quantum Cheshire Cats

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Curiouser and curiouser: delving into quantum Cheshire cats

Cite this